Component blueprints are reusable templates of equations and inputs that calculate a transfer of CO₂e into or out of the atmosphere. They represent small discrete parts of carbon accounting that can be combined like building blocks to create custom and rigorous accounting for Removals, GHG Statements and entire Projects. This page provides an overview of all component blueprints.
Component Types Component blueprints are labelled with a Type. The type represents a carbon accounting category and flux direction, either CO₂e sequestered or emitted.
Component Type Description CO₂e Flux Direction activityFuel and energy usage, manufacturing processes and consumables Emitted ↑counterfactualBaseline calculations to compare actual sequestration against alternative scenarios Emitted ↑lossCO₂e losses and leakage before reaching permanent storage Emitted ↑reductionActivity emissions that have been reduced by other claims, such as Book and Claim Units Sequestered ↓sequestrationCalculations of CO₂e sequestered through storage or natural processes Sequestered ↓uncertainty_discountCO₂e discounted as a result of off-platform calculations of input uncertainty Emitted ↑
Each component blueprint has inputs: the datapoints you need to provide for its calculation.
Each input is a numerically measurable property, which is called the Quantity Kind. For example: mass, volume, concentration or density. An input can accept different units as long as they are compatible with its quantity kind.
For transparency, data should be reported with the same value and units as shown in your attached sources. Components handle unit transformations automatically.
Some inputs take lists of values, for example a set of soil samples. In this case, each value in a list input must be compatible with the input’s quantity kind.
The output of the component calculation is always a mass of CO₂e (with the Quantity Kind mass_carbon). This is typically in units of either kgCO₂e or tCO₂e.
Quantity Kind Key Example Units Acidity aciditydimensionlessAmount Of Substance Concentration amount_of_substance_concentrationmmol / LAmount Of Substance Per Mass amount_of_substance_per_massmmol / kg, mol / kgArea areahaArea Carbon Emission Factor area_carbon_emission_factorkgCO2e / ha, kgCO2e / m^2Buffer Ph buffer_phdimensionlessBulk Density bulk_densitykg / m^3Currency currencyUSDCurrency Carbon Emission Factor currency_carbon_emission_factorkgCO2e / USD, tCO2e / USDDepth depthcmDiameter diameterµm, cmDimensionless dimensionlessdimensionlessDimensionless Ratio dimensionless_ratio%Distance distancekm, miDistance Carbon Emission Factor distance_carbon_emission_factorkgCO2e / km, tCO2e / kmDose Equivalent Rate dose_equivalent_ratemSv / yearElectric Current electric_currentampEnergy energykWh, MWh, kJ, MJEnergy Carbon Emission Factor energy_carbon_emission_factorkgCO2e / kWh, kgCO2e / MWhEnergy Density energy_densitykWh / L, MWh / LFuel Economy fuel_economykm / LIonic Strength ionic_strengthmmol / kgMass masskg, tonneMass Carbon mass_carbonkgCO2e, tCO2eMass Carbon Emission Factor mass_carbon_emission_factorkgCO2e / kg, kgCO2e / tonneMass Cdr Potential mass_cdr_potentialkgCO2e / tonneMass Concentration mass_concentrationmg / LMass Density mass_densitykg / m^3Mass Distance mass_distancetonne * kmMass Distance Carbon Emission Factor mass_distance_carbon_emission_factorgCO2e / (tonne * km), kgCO2e / (tonne * km), tCO2e / (tonne * km)Mass Energy Density mass_energy_densitykWh / kg, kWh / tonne, MWh / tonneMass Flow Rate mass_flow_ratetonne / hourMass Fraction mass_fractionmg / kg, %, kg / tonne, ppmMass Fraction Dry Basis mass_fraction_dry_basismg / kg, %, kg / tonne, ppmMass Fraction Wet Basis mass_fraction_wet_basismg / kg, %, kg / tonne, ppmMass Per Area mass_per_areakg / m^2, t / haMass Ratio mass_ratiokg / tonne, %Molality Of Solute molality_of_solutemmol / kgMolar Mass molar_massg / molMole Fraction mole_fractionmolCO2e / molPartial Pressure partial_pressurebarParticle Diameter particle_diameterµm, cmPercentage percentage%Power powerwattsPressure pressurebarSpecific Surface Area specific_surface_aream^2 / gSpecific Volume specific_volumem^3 / kg, L / kg, L / tonneTemperature temperaturedegCTime timesecond, dayVoltage voltagevoltVolume volumeL, m^3Volume Carbon Emission Factor volume_carbon_emission_factorkgCO2e / LVolume Distance Carbon Emission Factor volume_distance_carbon_emission_factorgCO2e / (teu * km), kgCO2e / (teu * km), gCO2e / (m^3 * km), kgCO2e / (m^3 * km)Volume Flow Rate volume_flow_ratem^3 / hourVolume Per Area volume_per_areaL / ha, L / m^2
Component inputs can either be fixed or monitored values:
Fixed inputs : are defined once in an LCA template and reused in each removal. These are typically emission factors, standard ratios or intrinsic measurements of a material with low variability.Monitored inputs : are provided as new datapoints with each removal. These are measurements that vary during a projects operation, such as masses of a specific product batch, transport leg distances, volumes of fuel or material characteristics that have higher variability.
Fixed inputs should be entered in the LCA Builder . They will then be automatically applied for removals created either in Certify , or via the API if the removal template is included in the API request.
Activity Component Blueprints Aggregated sample transport key: aggregated_sample_transport
tags: Transportation
Constant aggregated emissions, related to transporting sample material.
Calculations
result = a g g r e g a t e d _ s a m p l e _ t r a n s p o r t \text{result} = aggregated\_sample\_transport result = a gg re g a t e d _ s am pl e _ t r an s p or t
Monitored inputs
Input Key Display Name Quantity Kind Example Unit aggregated_sample_transportAggregated sample transport Mass Carbon kgCO2e
Area-based emissions key: area_based_emissions
tags: Embodied emissions Energy use
Emissions based on multiplying an area by its carbon emission factor. Applicable to quantifying emissions from standardized processes applied to a project area.
Calculations
result = a r e a × e m i s s i o n _ f a c t o r \text{result} = area \times emission\_factor result = a re a × e mi ss i o n _ f a c t or
Fixed inputs
Input Key Display Name Quantity Kind Example Unit emission_factorArea carbon emission factor Area Carbon Emission Factor kgCO2e / ha
Monitored inputs
Input Key Display Name Quantity Kind Example Unit areaArea Area ha
Constant emissions key: constant_activity_emissions
Emissions based on a constant value.
Calculations
result = c o n s t a n t _ a c t i v i t y _ e m i s s i o n s \text{result} = constant\_activity\_emissions result = co n s t an t _ a c t i v i t y _ e mi ss i o n s
Monitored inputs
Input Key Display Name Quantity Kind Example Unit constant_activity_emissionsConstant emissions Mass Carbon kgCO2e
Currency-based CI emissions key: currency_based_ci_emissions
tags: Embodied emissions
Emissions based on multiplying a currency by a carbon emission factor. Applicable to quantifying embodied emissions or emissions related to services when data of higher quality cannot be sourced.
Calculations
result = a m o u n t _ s p e n t × c a r b o n _ i n t e n s i t y \text{result} = amount\_spent \times carbon\_intensity result = am o u n t _ s p e n t × c a r b o n _ in t e n s i t y
Fixed inputs
Input Key Display Name Quantity Kind Example Unit carbon_intensityCarbon emission factor of currency Currency Carbon Emission Factor kgCO2e / USD
Monitored inputs
Input Key Display Name Quantity Kind Example Unit amount_spentAmount spent Currency USD
Distance-based emissions key: distance_based_ci_emissions
tags: Transportation
Emissions based on multiplying a distance by a carbon emission factor. Applicable to quantifying transportation emissions when only the distance traveled is known, this is acceptable for transportation by passenger car or airplane.
Calculations
result = d i s t a n c e × c a r b o n _ i n t e n s i t y \text{result} = distance \times carbon\_intensity result = d i s t an ce × c a r b o n _ in t e n s i t y
Fixed inputs
Input Key Display Name Quantity Kind Example Unit carbon_intensityDistance emission factor Distance Carbon Emission Factor kgCO2e / km
Monitored inputs
Input Key Display Name Quantity Kind Example Unit distanceDistance traveled Distance km
Electricity use emissions with low-carbon procurement key: grid_electricity_use_with_recs
tags: Electricity Energy use
Emissions related to electric energy use, using market-based accounting for procurement of low-carbon power.
Calculations
result = g r i d _ e m i s s i o n s + p r o c u r e d _ p o w e r _ e m i s s i o n s \text{result} = grid\_emissions + procured\_power\_emissions result = g r i d _ e mi ss i o n s + p roc u re d _ p o w er _ e mi ss i o n s
grid_emissions = n e t _ g r i d _ e l e c t r i c i t y _ u s e × g r i d _ c a r b o n _ i n t e n s i t y \text{grid\_emissions} = net\_grid\_electricity\_use \times grid\_carbon\_intensity grid_emissions = n e t _ g r i d _ e l ec t r i c i t y _ u se × g r i d _ c a r b o n _ in t e n s i t y net_grid_electricity_use = g r i d _ e l e c t r i c i t y _ u s e − p r o c u r e d _ p o w e r _ e l e c t r i c i t y _ u s e \text{net\_grid\_electricity\_use} = grid\_electricity\_use - procured\_power\_electricity\_use net_grid_electricity_use = g r i d _ e l ec t r i c i t y _ u se − p roc u re d _ p o w er _ e l ec t r i c i t y _ u se procured_power_emissions = p r o c u r e d _ p o w e r _ e l e c t r i c i t y _ u s e × p r o c u r e d _ p o w e r _ c a r b o n _ i n t e n s i t y \text{procured\_power\_emissions} = procured\_power\_electricity\_use \times procured\_power\_carbon\_intensity procured_power_emissions = p roc u re d _ p o w er _ e l ec t r i c i t y _ u se × p roc u re d _ p o w er _ c a r b o n _ in t e n s i t y Fixed inputs
Input Key Display Name Quantity Kind Example Unit grid_carbon_intensityResidual mix emission factor of grid electricity Energy Carbon Emission Factor kgCO2e / kWhprocured_power_carbon_intensityCarbon emission factor of procured power Energy Carbon Emission Factor kgCO2e / kWh
Monitored inputs
Input Key Display Name Quantity Kind Example Unit grid_electricity_useGrid electricity usage Energy kWhprocured_power_electricity_useProcured power electricity usage Energy kWh
Electricity-ratio based emissions key: electricity_ratio_based_emissions
tags: Electricity Energy use
Calculates emissions based on an amount of electricity used per unit feedstock mass. Applicable to quantifying electricity emissions when electricity consumption is derived from an efficiency, such as the amount of electricity consumed by a piece of equipment per tonne of feedstock processed.
Calculations
result = m a s s _ f e e d s t o c k × e n e r g y × c a r b o n _ i n t e n s i t y \text{result} = mass\_feedstock \times energy \times carbon\_intensity result = ma ss _ f ee d s t oc k × e n er g y × c a r b o n _ in t e n s i t y
Fixed inputs
Input Key Display Name Quantity Kind Example Unit carbon_intensityEmission factor of energy Energy Carbon Emission Factor kgCO2e / kWhenergyEnergy used per unit mass of feedstock Mass Energy Density kWh / kg
Monitored inputs
Input Key Display Name Quantity Kind Example Unit mass_feedstockMass of feedstock Mass kg
Embodied emissions key: embodied_emissions
tags: Embodied emissions
Constant embodied emissions. Applicable to embodied emissions reported as a single value, for example in the case where emissions are evidenced by an Environmental Product Declaration.
Calculations
result = e m b o d i e d _ e m i s s i o n s \text{result} = embodied\_emissions result = e mb o d i e d _ e mi ss i o n s
Monitored inputs
Input Key Display Name Quantity Kind Example Unit embodied_emissionsEmbodied emissions Mass Carbon kgCO2e
Energy-based CI emissions key: energy_based_ci_emissions
tags: Electricity Energy use
Emissions based on multiplying an energy by its carbon emission factor. If more specific information is known regarding the fuel or electricity consumed use other component blueprints that are more accurate.
Calculations
result = e n e r g y × c a r b o n _ i n t e n s i t y \text{result} = energy \times carbon\_intensity result = e n er g y × c a r b o n _ in t e n s i t y
Fixed inputs
Input Key Display Name Quantity Kind Example Unit carbon_intensityCarbon emission factor of energy Energy Carbon Emission Factor kgCO2e / kWh
Monitored inputs
Input Key Display Name Quantity Kind Example Unit energyEnergy used Energy kWh
Fuel consumption based transport emissions key: fuel_consumption_based_transport
tags: Transportation
Emissions related to transporting a load, based on a fuel-consumption method. Applicable to quantifying transportation emissions when the volume of fuel consumed is derived from a vehicle efficiency. If the volume of fuel has been measured, use the component blueprints ‘Fuel usage by mass’ or ‘Fuel usage by volume’.
Calculations
result = d i s t a n c e × f u e l _ c a r b o n _ i n t e n s i t y f u e l _ e c o n o m y \text{result} = \frac{distance \times fuel\_carbon\_intensity}{fuel\_economy} result = f u e l _ eco n o m y d i s t an ce × f u e l _ c a r b o n _ in t e n s i t y
Fixed inputs
Input Key Display Name Quantity Kind Example Unit fuel_carbon_intensityCarbon emission factor of the fuel consumed Volume Carbon Emission Factor kgCO2e / Lfuel_economyDistance traveled per unit of fuel Fuel Economy km / L
Monitored inputs
Input Key Display Name Quantity Kind Example Unit distanceDistance traveled Distance km
Fuel usage by area key: fuel_usage_by_area
tags: Energy use Fuel
Calculates emissions based on consumption of a volume of fuel per unit area, multiplied by the total area. Applicable, for example, to spreading of a feedstock, carbon-rich product or site preparation.
Calculations
result = v o l u m e _ f u e l _ p e r _ a r e a × e m i s s i o n _ f a c t o r × a r e a \text{result} = volume\_fuel\_per\_area \times emission\_factor \times area result = v o l u m e _ f u e l _ p er _ a re a × e mi ss i o n _ f a c t or × a re a
Fixed inputs
Input Key Display Name Quantity Kind Example Unit emission_factorVolume carbon emission factor Volume Carbon Emission Factor kgCO2e / Lvolume_fuel_per_areaVolume of fuel consumed per unit area Volume Per Area L / ha
Monitored inputs
Input Key Display Name Quantity Kind Example Unit areaArea Area ha
Fuel usage by distance emissions, accounting for BCU claims key: distance_based_transport_bcu
tags: Transportation
Emissions based on a distance traveled for a specific journey, accounting for BCU claims.
Calculations
result = f u e l _ u s a g e _ a c c o u n t a b l e _ e m i s s i o n s + b c u _ f u e l _ u s a g e _ e m i s s i o n s \text{result} = fuel\_usage\_accountable\_emissions + bcu\_fuel\_usage\_emissions result = f u e l _ u s a g e _ a cco u n t ab l e _ e mi ss i o n s + b c u _ f u e l _ u s a g e _ e mi ss i o n s
fuel_usage_accountable_emissions = f u e l _ c o m b u s t i o n _ c a r b o n _ i n t e n s i t y × ( d i s t a n c e × m a s s × e m i s s i o n _ f a c t o r _ t r a n s p o r t f u e l _ c o m b u s t i o n _ c a r b o n _ i n t e n s i t y − s u b t r a c t a b l e _ m a s s _ o f _ b c u _ f u e l ) \text{fuel\_usage\_accountable\_emissions} = fuel\_combustion\_carbon\_intensity \times \left(distance \times mass \times \frac{emission\_factor\_transport}{fuel\_combustion\_carbon\_intensity} - subtractable\_mass\_of\_bcu\_fuel\right) fuel_usage_accountable_emissions = f u e l _ co mb u s t i o n _ c a r b o n _ in t e n s i t y × ( d i s t an ce × ma ss × f u e l _ co mb u s t i o n _ c a r b o n _ in t e n s i t y e mi ss i o n _ f a c t or _ t r an s p or t − s u b t r a c t ab l e _ ma ss _ o f _ b c u _ f u e l ) subtractable_mass_of_bcu_fuel = m a s s _ o f _ b c u _ f u e l × e n e r g y _ d e n s i t y _ b c u _ f u e l e n e r g y _ d e n s i t y _ f u e l _ u s e d \text{subtractable\_mass\_of\_bcu\_fuel} = mass\_of\_bcu\_fuel \times \frac{energy\_density\_bcu\_fuel}{energy\_density\_fuel\_used} subtractable_mass_of_bcu_fuel = ma ss _ o f _ b c u _ f u e l × e n er g y _ d e n s i t y _ f u e l _ u se d e n er g y _ d e n s i t y _ b c u _ f u e l bcu_fuel_usage_emissions = b c u _ f u e l _ c o m b u s t i o n _ c a r b o n _ i n t e n s i t y × m a s s _ o f _ b c u _ f u e l \text{bcu\_fuel\_usage\_emissions} = bcu\_fuel\_combustion\_carbon\_intensity \times mass\_of\_bcu\_fuel bcu_fuel_usage_emissions = b c u _ f u e l _ co mb u s t i o n _ c a r b o n _ in t e n s i t y × ma ss _ o f _ b c u _ f u e l Fixed inputs
Input Key Display Name Quantity Kind Example Unit bcu_fuel_combustion_carbon_intensityCarbon emission factor of BCU combustion Mass Carbon Emission Factor kgCO2e / kgemission_factor_transportEmission factor of transport Mass Distance Carbon Emission Factor gCO2e / (tonne * km)fuel_combustion_carbon_intensityCarbon emission factor of combustion of fuel used for journey Mass Carbon Emission Factor kgCO2e / kg
Monitored inputs
Input Key Display Name Quantity Kind Example Unit distanceDistance traveled Distance kmenergy_density_bcu_fuelEnergy density of low-carbon fuel represented in BCUs used for transportation journey Mass Energy Density kWh / kgenergy_density_fuel_usedEnergy density of fuel consumed during the transportation journey Mass Energy Density kWh / kgmassMass of load Mass kgmass_of_bcu_fuelThe quantity of fuel represented in BCUs used for transportation journey Mass kg
Fuel usage by mass emissions key: fuel_usage_by_mass
tags: Energy use Fuel Transportation
Emissions based on multiplying a fuel mass by the carbon emission factor of combustion.
Calculations
result = m a s s _ o f _ f u e l × f u e l _ c o m b u s t i o n _ c a r b o n _ i n t e n s i t y \text{result} = mass\_of\_fuel \times fuel\_combustion\_carbon\_intensity result = ma ss _ o f _ f u e l × f u e l _ co mb u s t i o n _ c a r b o n _ in t e n s i t y
Fixed inputs
Input Key Display Name Quantity Kind Example Unit fuel_combustion_carbon_intensityCarbon emission factor of combustion Mass Carbon Emission Factor kgCO2e / kg
Monitored inputs
Input Key Display Name Quantity Kind Example Unit mass_of_fuelMass of fuel Mass kg
Fuel usage by mass emissions, accounting for BCU claims key: fuel_usage_by_mass_bcu
tags: Energy use Fuel Transportation
Emissions based on a mass of fuel used for a journey, accounting for BCU claims.
Calculations
result = f u e l _ u s a g e _ a c c o u n t a b l e _ e m i s s i o n s + b c u _ f u e l _ u s a g e _ e m i s s i o n s \text{result} = fuel\_usage\_accountable\_emissions + bcu\_fuel\_usage\_emissions result = f u e l _ u s a g e _ a cco u n t ab l e _ e mi ss i o n s + b c u _ f u e l _ u s a g e _ e mi ss i o n s
fuel_usage_accountable_emissions = f u e l _ c o m b u s t i o n _ c a r b o n _ i n t e n s i t y × ( m a s s _ o f _ f u e l _ u s e d − s u b t r a c t a b l e _ m a s s _ o f _ b c u _ f u e l ) \text{fuel\_usage\_accountable\_emissions} = fuel\_combustion\_carbon\_intensity \times \left(mass\_of\_fuel\_used - subtractable\_mass\_of\_bcu\_fuel\right) fuel_usage_accountable_emissions = f u e l _ co mb u s t i o n _ c a r b o n _ in t e n s i t y × ( ma ss _ o f _ f u e l _ u se d − s u b t r a c t ab l e _ ma ss _ o f _ b c u _ f u e l ) subtractable_mass_of_bcu_fuel = m a s s _ o f _ b c u _ f u e l × e n e r g y _ d e n s i t y _ b c u _ f u e l e n e r g y _ d e n s i t y _ f u e l _ u s e d \text{subtractable\_mass\_of\_bcu\_fuel} = mass\_of\_bcu\_fuel \times \frac{energy\_density\_bcu\_fuel}{energy\_density\_fuel\_used} subtractable_mass_of_bcu_fuel = ma ss _ o f _ b c u _ f u e l × e n er g y _ d e n s i t y _ f u e l _ u se d e n er g y _ d e n s i t y _ b c u _ f u e l bcu_fuel_usage_emissions = b c u _ f u e l _ c o m b u s t i o n _ c a r b o n _ i n t e n s i t y × m a s s _ o f _ b c u _ f u e l \text{bcu\_fuel\_usage\_emissions} = bcu\_fuel\_combustion\_carbon\_intensity \times mass\_of\_bcu\_fuel bcu_fuel_usage_emissions = b c u _ f u e l _ co mb u s t i o n _ c a r b o n _ in t e n s i t y × ma ss _ o f _ b c u _ f u e l Fixed inputs
Input Key Display Name Quantity Kind Example Unit bcu_fuel_combustion_carbon_intensityCarbon emission factor of BCU combustion Mass Carbon Emission Factor kgCO2e / kgfuel_combustion_carbon_intensityCarbon emission factor of combustion of fuel used for journey Mass Carbon Emission Factor kgCO2e / kg
Monitored inputs
Input Key Display Name Quantity Kind Example Unit energy_density_bcu_fuelEnergy density of low-carbon fuel represented in BCUs used for transportation journey Mass Energy Density kWh / kgenergy_density_fuel_usedEnergy density of fuel consumed during the transportation journey Mass Energy Density kWh / kgmass_of_bcu_fuelThe quantity of fuel represented in BCUs used for transportation journey Mass kgmass_of_fuel_usedMass of fuel used for the journey Mass kg
Fuel usage by volume emissions key: fuel_usage_by_volume
tags: Energy use Fuel Transportation
Emissions based on multiplying a fuel volume by the carbon emission factor of combustion.
Calculations
result = v o l u m e _ o f _ f u e l × f u e l _ c o m b u s t i o n _ c a r b o n _ i n t e n s i t y \text{result} = volume\_of\_fuel \times fuel\_combustion\_carbon\_intensity result = v o l u m e _ o f _ f u e l × f u e l _ co mb u s t i o n _ c a r b o n _ in t e n s i t y
Fixed inputs
Input Key Display Name Quantity Kind Example Unit fuel_combustion_carbon_intensityFuel emission factor Volume Carbon Emission Factor kgCO2e / L
Monitored inputs
Input Key Display Name Quantity Kind Example Unit volume_of_fuelVolume of fuel Volume L
Fuel usage by volume emissions, accounting for BCU claims key: fuel_usage_by_volume_bcu
tags: Energy use Fuel Transportation
Emissions based on a volume of fuel used for a journey, accounting for BCU claims.
Calculations
result = f u e l _ u s a g e _ a c c o u n t a b l e _ e m i s s i o n s + b c u _ f u e l _ u s a g e _ e m i s s i o n s \text{result} = fuel\_usage\_accountable\_emissions + bcu\_fuel\_usage\_emissions result = f u e l _ u s a g e _ a cco u n t ab l e _ e mi ss i o n s + b c u _ f u e l _ u s a g e _ e mi ss i o n s
fuel_usage_accountable_emissions = f u e l _ c o m b u s t i o n _ c a r b o n _ i n t e n s i t y × ( v o l u m e _ o f _ f u e l _ u s e d − v o l u m e _ o f _ b c u _ f u e l × e n e r g y _ d e n s i t y _ b c u _ f u e l e n e r g y _ d e n s i t y _ f u e l _ u s e d ) \text{fuel\_usage\_accountable\_emissions} = fuel\_combustion\_carbon\_intensity \times \left(volume\_of\_fuel\_used - volume\_of\_bcu\_fuel \times \frac{energy\_density\_bcu\_fuel}{energy\_density\_fuel\_used}\right) fuel_usage_accountable_emissions = f u e l _ co mb u s t i o n _ c a r b o n _ in t e n s i t y × ( v o l u m e _ o f _ f u e l _ u se d − v o l u m e _ o f _ b c u _ f u e l × e n er g y _ d e n s i t y _ f u e l _ u se d e n er g y _ d e n s i t y _ b c u _ f u e l ) bcu_fuel_usage_emissions = b c u _ f u e l _ c o m b u s t i o n _ c a r b o n _ i n t e n s i t y × v o l u m e _ o f _ b c u _ f u e l \text{bcu\_fuel\_usage\_emissions} = bcu\_fuel\_combustion\_carbon\_intensity \times volume\_of\_bcu\_fuel bcu_fuel_usage_emissions = b c u _ f u e l _ co mb u s t i o n _ c a r b o n _ in t e n s i t y × v o l u m e _ o f _ b c u _ f u e l Fixed inputs
Input Key Display Name Quantity Kind Example Unit bcu_fuel_combustion_carbon_intensityCarbon emission factor of BCU combustion Volume Carbon Emission Factor kgCO2e / Lfuel_combustion_carbon_intensityCarbon emission factor of combustion of fuel used for journey Volume Carbon Emission Factor kgCO2e / L
Monitored inputs
Input Key Display Name Quantity Kind Example Unit energy_density_bcu_fuelEnergy density of low-carbon fuel represented in BCUs used for transportation journey Energy Density kWh / Lenergy_density_fuel_usedEnergy density of fuel consumed during the transportation journey Energy Density kWh / Lvolume_of_bcu_fuelThe quantity of fuel represented in BCUs used for transportation journey Volume Lvolume_of_fuel_usedVolume of fuel used for the journey Volume L
GHG direct emissions key: ghg_direct_emissions
tags: Direct emissions
Direct emissions from a pyrolysis process where pyrolysis gases are emitted to the atmosphere or combusted.
Calculations
result = m a s s _ f l o w × c o n c e n t r a t i o n × g l o b a l _ w a r m i n g _ p o t e n t i a l \text{result} = mass\_flow \times concentration \times global\_warming\_potential result = ma ss _ f l o w × co n ce n t r a t i o n × g l o ba l _ w a r min g _ p o t e n t ia l
Fixed inputs
Input Key Display Name Quantity Kind Example Unit global_warming_potential100-year global warming potential Dimensionless dimensionless
Monitored inputs
Input Key Display Name Quantity Kind Example Unit concentrationConcentration of warming species in emitted gas Mass Fraction mg / kgmass_flowTotal mass flow of gas Mass kg
GHG leakage emissions key: ghg_leakage_by_energy
tags: Direct emissions
Emissions due to usage of a greenhouse gas leakage into the atmosphere, based on gas energy used.
Calculations
result = g a s _ e n e r g y _ u s e d × g l o b a l _ w a r m i n g _ p o t e n t i a l × l e a k a g e _ f r a c t i o n g a s _ e n e r g y _ d e n s i t y \text{result} = \frac{gas\_energy\_used \times global\_warming\_potential \times leakage\_fraction}{gas\_energy\_density} result = g a s _ e n er g y _ d e n s i t y g a s _ e n er g y _ u se d × g l o ba l _ w a r min g _ p o t e n t ia l × l e aka g e _ f r a c t i o n
Fixed inputs
Input Key Display Name Quantity Kind Example Unit global_warming_potential100-year global warming potential Dimensionless dimensionless
Monitored inputs
Input Key Display Name Quantity Kind Example Unit gas_energy_densityCarbon density of gas Mass Energy Density kWh / kggas_energy_usedEnergy of gas used Energy kWhleakage_fractionFraction of gas leaked into atmosphere Dimensionless dimensionless
Grid electricity use emissions key: grid_electricity_use
tags: Electricity Energy use
Emissions related to electric energy use. Applicable to quantifying electricity emissions when the quantity of electricity consumed is reported as a single number. If electricity consumption has been measured from a meter, use the component blueprint ‘Metered electricity use emissions’.
Calculations
result = e l e c t r i c i t y _ u s e × g r i d _ c a r b o n _ i n t e n s i t y \text{result} = electricity\_use \times grid\_carbon\_intensity result = e l ec t r i c i t y _ u se × g r i d _ c a r b o n _ in t e n s i t y
Fixed inputs
Input Key Display Name Quantity Kind Example Unit grid_carbon_intensityElectricity grid emission factor Energy Carbon Emission Factor kgCO2e / kWh
Monitored inputs
Input Key Display Name Quantity Kind Example Unit electricity_useTotal electricity usage Energy kWh
Grid electricity use, full lifecycle with loss emission factor key: grid_electricity_full_lifecycle_ef
tags: Electricity Energy use
Emissions related to electric energy use. Applicable to quantifying electricity emissions where the electricity consumed is reported as a single value and where transmission and distribution losses are published as an emission factor.
Calculations
result = e l e c t r i c i t y _ u s e × g r i d _ l i f e c y c l e _ e m i s s i o n _ f a c t o r \text{result} = electricity\_use \times grid\_lifecycle\_emission\_factor result = e l ec t r i c i t y _ u se × g r i d _ l i f ecyc l e _ e mi ss i o n _ f a c t or
grid_lifecycle_emission_factor = g r i d _ c o n s u m p t i o n _ e m i s s i o n _ f a c t o r + w t t _ e m i s s i o n _ f a c t o r + t r a n s m i s s i o n _ d i s t r i b u t i o n _ l o s s _ e f \text{grid\_lifecycle\_emission\_factor} = grid\_consumption\_emission\_factor + wtt\_emission\_factor + transmission\_distribution\_loss\_ef grid_lifecycle_emission_factor = g r i d _ co n s u m pt i o n _ e mi ss i o n _ f a c t or + wtt _ e mi ss i o n _ f a c t or + t r an s mi ss i o n _ d i s t r ib u t i o n _ l oss _ e f Fixed inputs
Input Key Display Name Quantity Kind Example Unit grid_consumption_emission_factorElectricity grid consumption emission factor Energy Carbon Emission Factor kgCO2e / kWhtransmission_distribution_loss_efTransmission and distribution loss emission factor Energy Carbon Emission Factor kgCO2e / kWhwtt_emission_factorWell to tank emission factor Energy Carbon Emission Factor kgCO2e / kWh
Monitored inputs
Input Key Display Name Quantity Kind Example Unit electricity_useTotal electricity usage Energy kWh
Grid electricity use, full lifecycle with percentage losses key: grid_electricity_full_lifecycle_percent
tags: Electricity Energy use
Emissions related to electric energy use. Applicable to quantifying electricity emissions where the electricity consumed is reported as a single value and where transmission and distribution losses are published as a percentage. If electricity consumption has been measured from a meter, use the component blueprint ‘Metered electricity use emissions’.
Calculations
result = e l e c t r i c i t y _ u s e × g r i d _ l i f e c y c l e _ e m i s s i o n _ f a c t o r × l o s s _ u p l i f t \text{result} = electricity\_use \times grid\_lifecycle\_emission\_factor \times loss\_uplift result = e l ec t r i c i t y _ u se × g r i d _ l i f ecyc l e _ e mi ss i o n _ f a c t or × l oss _ u pl i f t
grid_lifecycle_emission_factor = g r i d _ c o n s u m p t i o n _ e m i s s i o n _ f a c t o r + w t t _ e m i s s i o n _ f a c t o r \text{grid\_lifecycle\_emission\_factor} = grid\_consumption\_emission\_factor + wtt\_emission\_factor grid_lifecycle_emission_factor = g r i d _ co n s u m pt i o n _ e mi ss i o n _ f a c t or + wtt _ e mi ss i o n _ f a c t or loss_uplift = 1.0 O n e + t r a n s m i s s i o n _ d i s t r i b u t i o n _ l o s s e s \text{loss\_uplift} = \overset{One}{\text{1.0}} + transmission\_distribution\_losses loss_uplift = 1.0 O n e + t r an s mi ss i o n _ d i s t r ib u t i o n _ l osses Fixed inputs
Input Key Display Name Quantity Kind Example Unit grid_consumption_emission_factorElectricity grid consumption emission factor Energy Carbon Emission Factor kgCO2e / kWhtransmission_distribution_lossesTransmission and distribution losses Percentage %wtt_emission_factorWell to tank emission factor Energy Carbon Emission Factor kgCO2e / kWh
Monitored inputs
Input Key Display Name Quantity Kind Example Unit electricity_useTotal electricity usage Energy kWh
Grid electricity use, with low carbon procurement, full lifecycle with percentage losses key: grid_electricity_with_recs_full_lifecycle_percent
tags: Electricity Energy use
Emissions related to electric energy use with procurement of low-carbon power. Applicable where distribution losses are published as a percentage.
Calculations
result = g r i d _ e m i s s i o n s + p r o c u r e d _ p o w e r _ e m i s s i o n s \text{result} = grid\_emissions + procured\_power\_emissions result = g r i d _ e mi ss i o n s + p roc u re d _ p o w er _ e mi ss i o n s
grid_emissions = n e t _ g r i d _ e l e c t r i c i t y _ u s e × g r i d _ l i f e c y c l e _ e m i s s i o n _ f a c t o r × l o s s _ u p l i f t \text{grid\_emissions} = net\_grid\_electricity\_use \times grid\_lifecycle\_emission\_factor \times loss\_uplift grid_emissions = n e t _ g r i d _ e l ec t r i c i t y _ u se × g r i d _ l i f ecyc l e _ e mi ss i o n _ f a c t or × l oss _ u pl i f t net_grid_electricity_use = t o t a l _ g r i d _ e l e c t r i c i t y _ u s e − l o w _ c a r b o n _ p r o c u r e d _ p o w e r _ e l e c t r i c i t y _ u s e \text{net\_grid\_electricity\_use} = total\_grid\_electricity\_use - low\_carbon\_procured\_power\_electricity\_use net_grid_electricity_use = t o t a l _ g r i d _ e l ec t r i c i t y _ u se − l o w _ c a r b o n _ p roc u re d _ p o w er _ e l ec t r i c i t y _ u se grid_lifecycle_emission_factor = g r i d _ c o n s u m p t i o n _ e m i s s i o n _ f a c t o r + w t t _ e m i s s i o n _ f a c t o r \text{grid\_lifecycle\_emission\_factor} = grid\_consumption\_emission\_factor + wtt\_emission\_factor grid_lifecycle_emission_factor = g r i d _ co n s u m pt i o n _ e mi ss i o n _ f a c t or + wtt _ e mi ss i o n _ f a c t or loss_uplift = 1.0 O n e + t r a n s m i s s i o n _ d i s t r i b u t i o n _ l o s s e s \text{loss\_uplift} = \overset{One}{\text{1.0}} + transmission\_distribution\_losses loss_uplift = 1.0 O n e + t r an s mi ss i o n _ d i s t r ib u t i o n _ l osses procured_power_emissions = l o w _ c a r b o n _ p r o c u r e d _ p o w e r _ e l e c t r i c i t y _ u s e × l o w _ c a r b o n _ p r o c u r e d _ p o w e r _ e m i s s i o n _ f a c t o r × l o s s _ u p l i f t \text{procured\_power\_emissions} = low\_carbon\_procured\_power\_electricity\_use \times low\_carbon\_procured\_power\_emission\_factor \times loss\_uplift procured_power_emissions = l o w _ c a r b o n _ p roc u re d _ p o w er _ e l ec t r i c i t y _ u se × l o w _ c a r b o n _ p roc u re d _ p o w er _ e mi ss i o n _ f a c t or × l oss _ u pl i f t Fixed inputs
Input Key Display Name Quantity Kind Example Unit grid_consumption_emission_factorElectricity grid consumption emission factor Energy Carbon Emission Factor kgCO2e / kWhlow_carbon_procured_power_emission_factorCarbon emission factor of procured power Energy Carbon Emission Factor kgCO2e / kWhtransmission_distribution_lossesTransmission and distribution losses Percentage %wtt_emission_factorWell to tank emission factor Energy Carbon Emission Factor kgCO2e / kWh
Monitored inputs
Input Key Display Name Quantity Kind Example Unit low_carbon_procured_power_electricity_useProcured power electricity usage Energy kWhtotal_grid_electricity_useTotal electricity usage Energy kWh
Mass-based CI emissions key: mass_based_ci_emissions
tags: Embodied emissions Energy use
Emissions based on multiplying a mass by its carbon emission factor. Applicable to quantifying embodied emissions of materials and consumables when the mass consumed is known. This component is generic to any material, for fuel use see the ‘Fuel usage by mass emissions’ component blueprint .
Calculations
result = m a s s × c a r b o n _ i n t e n s i t y \text{result} = mass \times carbon\_intensity result = ma ss × c a r b o n _ in t e n s i t y
Fixed inputs
Input Key Display Name Quantity Kind Example Unit carbon_intensityCarbon emission factor Mass Carbon Emission Factor kgCO2e / kg
Monitored inputs
Input Key Display Name Quantity Kind Example Unit massMass Mass kg
Mass-distance-based CI emissions key: mass_distance_based_ci_emissions
tags: Transportation
Emissions related to transporting a load, based on a distance-mass method. This component should be used when it’s impossible to disambiguate the mass transported from the distance traveled. For example, where multiple small trips with different masses and distances are aggregated prior to submitting them to Isometric Certify.
Calculations
result = m a s s _ d i s t a n c e × c a r b o n _ i n t e n s i t y \text{result} = mass\_distance \times carbon\_intensity result = ma ss _ d i s t an ce × c a r b o n _ in t e n s i t y
Fixed inputs
Input Key Display Name Quantity Kind Example Unit carbon_intensityEmission factor of transport Mass Distance Carbon Emission Factor gCO2e / (tonne * km)
Monitored inputs
Input Key Display Name Quantity Kind Example Unit mass_distanceMass multiplied by distance Mass Distance tonne * km
Mass-ratio based emissions key: mass_ratio_based_emissions
tags: Embodied emissions Energy use Fuel Transportation
Calculates emissions based on a mass of material used per unit feedstock mass. Applicable to quantifying embodied emissions of materials and consumables when the mass consumed is derived from an efficiency value.
Calculations
result = m a s s _ r a t i o × e m i s s i o n s _ f a c t o r × f e e d s t o c k _ m a s s \text{result} = mass\_ratio \times emissions\_factor \times feedstock\_mass result = ma ss _ r a t i o × e mi ss i o n s _ f a c t or × f ee d s t oc k _ ma ss
Fixed inputs
Input Key Display Name Quantity Kind Example Unit emissions_factorEmission factor Mass Carbon Emission Factor kgCO2e / kgmass_ratioMass of material per unit mass of feedstock Mass Ratio kg / tonne
Monitored inputs
Input Key Display Name Quantity Kind Example Unit feedstock_massMass of feedstock Mass kg
Metered electricity use emissions key: metered_energy_based_ci_emissions
tags: Electricity Energy use
Emissions based on electricity use between two meter readings multiplied by its carbon emission factor. Applicable to quantifying electricity emissions when the final and initial meter readout is known.
Calculations
result = e n e r g y _ u s e × c a r b o n _ i n t e n s i t y \text{result} = energy\_use \times carbon\_intensity result = e n er g y _ u se × c a r b o n _ in t e n s i t y
energy_use = f i n a l _ r e a d o u t − i n i t i a l _ r e a d o u t \text{energy\_use} = final\_readout - initial\_readout energy_use = f ina l _ re a d o u t − ini t ia l _ re a d o u t Fixed inputs
Input Key Display Name Quantity Kind Example Unit carbon_intensityElectricity emission factor Energy Carbon Emission Factor kgCO2e / kWh
Monitored inputs
Input Key Display Name Quantity Kind Example Unit final_readoutElectricity final readout Energy kWhinitial_readoutElectricity initial readout Energy kWh
Proportional and additional mine emissions key: proportional_and_additional_mine_energy_emissions
tags: Electricity Energy use Fuel
Emissions related to fuel, emulsion and electricity use, based on proportion of rock powder used and overall electricity use amplifications.
Calculations
result = e l e c t r i c i t y _ u s e _ f o r _ d e p l o y e d _ r o c k _ p o w d e r × e l e c t r i c i t y _ c a r b o n _ i n t e n s i t y \text{result} = electricity\_use\_for\_deployed\_rock\_powder \times electricity\_carbon\_intensity result = e l ec t r i c i t y _ u se _ f or _ d e pl oye d _ roc k _ p o w d er × e l ec t r i c i t y _ c a r b o n _ in t e n s i t y
electricity_use_for_deployed_rock_powder = r o c k _ p o w d e r _ d e p l o y e d t o t a l _ r o c k _ o u t p u t × p r o p o r t i o n a l _ e l e c t r i c i t y _ u s e + r o c k _ p o w d e r _ d e p l o y e d _ p r o p o r t i o n × a d d i t i o n a l _ e l e c t r i c i t y _ u s e \text{electricity\_use\_for\_deployed\_rock\_powder} = \frac{rock\_powder\_deployed}{total\_rock\_output} \times proportional\_electricity\_use + rock\_powder\_deployed\_proportion \times additional\_electricity\_use electricity_use_for_deployed_rock_powder = t o t a l _ roc k _ o u tp u t roc k _ p o w d er _ d e pl oye d × p ro p or t i o na l _ e l ec t r i c i t y _ u se + roc k _ p o w d er _ d e pl oye d _ p ro p or t i o n × a dd i t i o na l _ e l ec t r i c i t y _ u se proportional_electricity_use = t o t a l _ e l e c t r i c i t y _ u s e × ( 1 − e n e r g y _ u s e _ a m p l i f i c a t i o n ) \text{proportional\_electricity\_use} = total\_electricity\_use \times \left(1 - energy\_use\_amplification\right) proportional_electricity_use = t o t a l _ e l ec t r i c i t y _ u se × ( 1 − e n er g y _ u se _ am pl i f i c a t i o n ) rock_powder_deployed_proportion = r o c k _ p o w d e r _ d e p l o y e d r o c k _ p o w d e r _ o u t p u t \text{rock\_powder\_deployed\_proportion} = \frac{rock\_powder\_deployed}{rock\_powder\_output} rock_powder_deployed_proportion = roc k _ p o w d er _ o u tp u t roc k _ p o w d er _ d e pl oye d additional_electricity_use = t o t a l _ e l e c t r i c i t y _ u s e × e n e r g y _ u s e _ a m p l i f i c a t i o n \text{additional\_electricity\_use} = total\_electricity\_use \times energy\_use\_amplification additional_electricity_use = t o t a l _ e l ec t r i c i t y _ u se × e n er g y _ u se _ am pl i f i c a t i o n Fixed inputs
Input Key Display Name Quantity Kind Example Unit electricity_carbon_intensityCarbon emission factor of electricity Energy Carbon Emission Factor kgCO2e / kWh
Monitored inputs
Input Key Display Name Quantity Kind Example Unit energy_use_amplificationOverall electricity use increase Percentage %rock_powder_deployedRock powder deployed Mass kgrock_powder_outputRock powder output Mass kgtotal_electricity_useOverall electricity use Energy kWhtotal_rock_outputTotal rock output Mass kg
Time-based grid electricity use emissions key: time_based_grid_electricity_use
tags: Electricity Energy use
Amount of CO₂ emitted, given a time, average power draw and energy carbon emission factor.
Calculations
result = t i m e × a v e r a g e _ p o w e r × g r i d _ c a r b o n _ i n t e n s i t y \text{result} = time \times average\_power \times grid\_carbon\_intensity result = t im e × a v er a g e _ p o w er × g r i d _ c a r b o n _ in t e n s i t y
Fixed inputs
Input Key Display Name Quantity Kind Example Unit grid_carbon_intensityCO₂e emitted per unit of electricity consumed Energy Carbon Emission Factor kgCO2e / kWh
Monitored inputs
Input Key Display Name Quantity Kind Example Unit average_powerAverage power draw Power wattstimeTime the power was been drawn for Time second
Transport emissions key: transport
tags: Transportation
Emissions related to transporting a load, based on a distance-mass method. Applicable to quantifying transportation emissions when the mass and distance traveled for an individual journey is known.
Calculations
result = m a s s × d i s t a n c e × c a r b o n _ i n t e n s i t y \text{result} = mass \times distance \times carbon\_intensity result = ma ss × d i s t an ce × c a r b o n _ in t e n s i t y
Fixed inputs
Input Key Display Name Quantity Kind Example Unit carbon_intensityEmission factor of transport Mass Distance Carbon Emission Factor gCO2e / (tonne * km)
Monitored inputs
Input Key Display Name Quantity Kind Example Unit distanceDistance traveled Distance kmmassMass of load Mass kg
Volume per feedstock-unit mass based emissions key: specific_volume_based_emissions
tags: Energy use Fuel Transportation
Calculates emissions based on a volume of material used per unit feedstock mass. Applicable to quantifying emissions related to consumables when the volume consumed is derived from an efficiency value.
Calculations
result = v o l u m e _ m a t e r i a l _ p e r _ m a s s × e m i s s i o n s _ f a c t o r × f e e d s t o c k _ m a s s \text{result} = volume\_material\_per\_mass \times emissions\_factor \times feedstock\_mass result = v o l u m e _ ma t er ia l _ p er _ ma ss × e mi ss i o n s _ f a c t or × f ee d s t oc k _ ma ss
Fixed inputs
Input Key Display Name Quantity Kind Example Unit emissions_factorVolume carbon emission factor Volume Carbon Emission Factor kgCO2e / Lvolume_material_per_massVolume of material per unit mass of feedstock Specific Volume m^3 / kg
Monitored inputs
Input Key Display Name Quantity Kind Example Unit feedstock_massMass of feedstock Mass kg
Volume-based emissions key: volume_based_ci_emissions
tags: Embodied emissions Energy use
Emissions based on multiplying a volume by its carbon emission factor. Applicable to quantifying emissions related to consumables, for example water. This component is generic to any liquid or gas, for fuel use specifically see the ‘Fuel usage by volume emissions’ component blueprint.
Calculations
result = v o l u m e × c a r b o n _ i n t e n s i t y \text{result} = volume \times carbon\_intensity result = v o l u m e × c a r b o n _ in t e n s i t y
Fixed inputs
Input Key Display Name Quantity Kind Example Unit carbon_intensityVolume carbon emission factor Volume Carbon Emission Factor kgCO2e / L
Monitored inputs
Input Key Display Name Quantity Kind Example Unit volumeVolume Volume L
Volume-based emissions per unit area key: volume_based_emissions_by_area
tags: Embodied emissions
Calculates emissions based on multiplying a rate of application of a material to a project area. Applicable, for example, to spreading of a feedstock, fertilizer, carbon-rich product or site preparation. For fuel consumption by unit area see the Fuel Usage By Area component.
Calculations
result = v o l u m e _ m a t e r i a l _ p e r _ a r e a × e m i s s i o n _ f a c t o r × a r e a \text{result} = volume\_material\_per\_area \times emission\_factor \times area result = v o l u m e _ ma t er ia l _ p er _ a re a × e mi ss i o n _ f a c t or × a re a
Fixed inputs
Input Key Display Name Quantity Kind Example Unit emission_factorVolume carbon emission factor Volume Carbon Emission Factor kgCO2e / Lvolume_material_per_areaVolume of material used per unit area Volume Per Area L / ha
Monitored inputs
Input Key Display Name Quantity Kind Example Unit areaArea Area ha
Volume-distance based emissions key: volume_distance_based_emissions
tags: Embodied emissions Energy use Transportation
Emissions based on multiplying a volume and distance by its carbon emission factor. Applicable to quantifying emissions related to transporting volume-based consumables or goods, for example water, gases, or solids in standardized shipping containers.
Calculations
result = v o l u m e × d i s t a n c e × e m i s s i o n _ f a c t o r \text{result} = volume \times distance \times emission\_factor result = v o l u m e × d i s t an ce × e mi ss i o n _ f a c t or
Fixed inputs
Input Key Display Name Quantity Kind Example Unit emission_factorVolume-distance carbon emission factor Volume Distance Carbon Emission Factor gCO2e / (teu * km)
Monitored inputs
Input Key Display Name Quantity Kind Example Unit distanceDistance traveled Distance kmvolumeVolume Volume L
Counterfactual Component Blueprints Biomass counterfactual storage key: biomass_counterfactual_storage
The CO₂ stored in the biomass feedstock that would have remained durably stored in the biomass in the absence of the project.
Calculations
result = f e e d s t o c k _ c o 2 e _ c o n t e n t − c o u n t e r f a c t u a l _ e m i s s i o n s \text{result} = feedstock\_co2e\_content - counterfactual\_emissions result = f ee d s t oc k _ co 2 e _ co n t e n t − co u n t er f a c t u a l _ e mi ss i o n s
feedstock_co2e_content = f e e d s t o c k _ m a s s × f e e d s t o c k _ c a r b o n _ c o n t e n t × 3.667 C O 2 e q u i v a l e n t o f p u r e c a r b o n \text{feedstock\_co2e\_content} = feedstock\_mass \times feedstock\_carbon\_content \times \overset{CO₂\ equivalent\ of\ pure\ carbon}{\text{3.667}} feedstock_co2e_content = f ee d s t oc k _ ma ss × f ee d s t oc k _ c a r b o n _ co n t e n t × 3.667 C O 2 e q u i v a l e n t o f p u re c a r b o n counterfactual_emissions = Minimum ( c o u n t e r f a c t u a l _ e m i s s i o n s _ 15 _ y e a r s , c o u n t e r f a c t u a l _ e m i s s i o n s _ 50 _ y e a r s ) \text{counterfactual\_emissions} = \text{Minimum}(counterfactual\_emissions\_15\_years,\allowbreak counterfactual\_emissions\_50\_years) counterfactual_emissions = Minimum ( co u n t er f a c t u a l _ e mi ss i o n s _15_ ye a rs , co u n t er f a c t u a l _ e mi ss i o n s _50_ ye a rs ) counterfactual_emissions_50_years = ( 1 − r e t a i n e d _ c a r b o n _ f r a c t i o n _ 50 _ y e a r s ) × f e e d s t o c k _ c o 2 e _ c o n t e n t \text{counterfactual\_emissions\_50\_years} = \left(1 - retained\_carbon\_fraction\_50\_years\right) \times feedstock\_co2e\_content counterfactual_emissions_50_years = ( 1 − re t ain e d _ c a r b o n _ f r a c t i o n _50_ ye a rs ) × f ee d s t oc k _ co 2 e _ co n t e n t Monitored inputs
Input Key Display Name Quantity Kind Example Unit counterfactual_emissions_15_yearsCO₂e counterfactually released from the biomass over 15 years Mass Carbon kgCO2efeedstock_carbon_contentCarbon content of the feedstock Mass Ratio kg / tonnefeedstock_massMass of the feedstock Mass kgretained_carbon_fraction_50_yearsFraction of C retained in the biomass after 50 years Dimensionless dimensionless
Feedstock replacement emissions key: feedstock_replacement_emissions
Replacement emissions based on multiplying a mass of feedstock by its replacement emissions factor.
Calculations
result = m a s s _ o f _ f e e d s t o c k × r e p l a c e m e n t _ e m i s s i o n s _ f a c t o r \text{result} = mass\_of\_feedstock \times replacement\_emissions\_factor result = ma ss _ o f _ f ee d s t oc k × re pl a ce m e n t _ e mi ss i o n s _ f a c t or
Fixed inputs
Input Key Display Name Quantity Kind Example Unit replacement_emissions_factorReplacement emissions factor for feedstock Mass Carbon Emission Factor kgCO2e / kg
Monitored inputs
Input Key Display Name Quantity Kind Example Unit mass_of_feedstockMass of feedstock Mass kg
Loss Component Blueprints CO₂e lost to strong acid weathering key: ew_loss_strong_acid_from_fertilizer_use
CO₂e lost to strong acid from fertilizer use
Calculations
result = f e r t i l i z e r _ a p p l i c a t i o n _ r a t e × r o c k _ s p r e a d _ a r e a × 44.01g/mol C O 2 m o l a r m a s s × n i t r o g e n _ d e n s i t y 28.02g/mol N i t r o g e n m o l a r m a s s × f e r t i l i z e r _ d e n s i t y \text{result} = \frac{fertilizer\_application\_rate \times rock\_spread\_area \times \overset{CO₂\ molar\ mass}{\text{44.01g/mol}} \times nitrogen\_density}{\overset{Nitrogen\ molar\ mass}{\text{28.02g/mol}} \times fertilizer\_density} result = 28.02g/mol N i t ro g e n m o l a r ma ss × f er t i l i zer _ d e n s i t y f er t i l i zer _ a ppl i c a t i o n _ r a t e × roc k _ s p re a d _ a re a × 44.01g/mol C O 2 m o l a r ma ss × ni t ro g e n _ d e n s i t y
Monitored inputs
Input Key Display Name Quantity Kind Example Unit fertilizer_application_rateFertilizer application rate Mass Per Area kg / m^2fertilizer_densityFertilizer density Mass Density kg / m^3nitrogen_densityNitrogen density in fertilizer Mass Density kg / m^3rock_spread_areaRock spread area Area ha
Cation exchange capacity loss key: ew_cec_loss
Enhanced weathering cation exchange capacity loss
Calculations
result = a l l _ _ c a t i o n _ c o n c e n t r a t i o n _ i n c r e a s e _ o v e r _ c o n t r o l × s o i l _ d e n s i t y × s o i l _ s a m p l i n g _ d e p t h × r o c k _ s p r e a d _ a r e a × 44.01g/mol C O 2 m o l a r m a s s \text{result} = all\_\_cation\_concentration\_increase\_over\_control \times soil\_density \times soil\_sampling\_depth \times rock\_spread\_area \times \overset{CO₂\ molar\ mass}{\text{44.01g/mol}} result = a ll __ c a t i o n _ co n ce n t r a t i o n _ in cre a se _ o v er _ co n t ro l × so i l _ d e n s i t y × so i l _ s am pl in g _ d e pt h × roc k _ s p re a d _ a re a × 44.01g/mol C O 2 m o l a r ma ss
all__cation_concentration_increase_over_control = a l l _ _ c a t i o n _ c o n c e n t r a t i o n _ i n c r e a s e _ i n _ d e p l o y m e n t − a l l _ _ c a t i o n _ c o n c e n t r a t i o n _ i n c r e a s e _ i n _ c o n t r o l \text{all\_\_cation\_concentration\_increase\_over\_control} = all\_\_cation\_concentration\_increase\_in\_deployment - all\_\_cation\_concentration\_increase\_in\_control all__cation_concentration_increase_over_control = a ll __ c a t i o n _ co n ce n t r a t i o n _ in cre a se _ in _ d e pl oy m e n t − a ll __ c a t i o n _ co n ce n t r a t i o n _ in cre a se _ in _ co n t ro l all__cation_concentration_increase_in_deployment = a l l _ _ d e p l o y m e n t _ e n d _ o f _ r e p o r t i n g _ p e r i o d _ c o n c e n t r a t i o n ‾ − a l l _ _ d e p l o y m e n t _ b a s e l i n e _ c o n c e n t r a t i o n ‾ \text{all\_\_cation\_concentration\_increase\_in\_deployment} = \overline{all\_\_deployment\_end\_of\_reporting\_period\_concentration} - \overline{all\_\_deployment\_baseline\_concentration} all__cation_concentration_increase_in_deployment = a ll __ d e pl oy m e n t _ e n d _ o f _ re p or t in g _ p er i o d _ co n ce n t r a t i o n − a ll __ d e pl oy m e n t _ ba se l in e _ co n ce n t r a t i o n all__cation_concentration_increase_in_control = a l l _ _ c o n t r o l _ e n d _ o f _ r e p o r t i n g _ p e r i o d _ c o n c e n t r a t i o n ‾ − a l l _ _ c o n t r o l _ b a s e l i n e _ c o n c e n t r a t i o n ‾ \text{all\_\_cation\_concentration\_increase\_in\_control} = \overline{all\_\_control\_end\_of\_reporting\_period\_concentration} - \overline{all\_\_control\_baseline\_concentration} all__cation_concentration_increase_in_control = a ll __ co n t ro l _ e n d _ o f _ re p or t in g _ p er i o d _ co n ce n t r a t i o n − a ll __ co n t ro l _ ba se l in e _ co n ce n t r a t i o n Monitored inputs
Input Key Display Name Quantity Kind Example Unit all__control_baseline_concentrationBaseline concentration of cation in soil exchangeable fraction Amount Of Substance Per Mass List mmol / kgall__control_end_of_reporting_period_concentrationEnd of reporting period concentration of cation in soil exchangeable fraction Amount Of Substance Per Mass List mmol / kgall__deployment_baseline_concentrationBaseline concentration of cation in soil exchangeable fraction Amount Of Substance Per Mass List mmol / kgall__deployment_end_of_reporting_period_concentrationEnd of reporting period concentration of cation in soil exchangeable fraction Amount Of Substance Per Mass List mmol / kgrock_spread_areaRock spread area Area hasoil_densitySoil density Mass Density kg / m^3soil_sampling_depthSoil sampling depth Distance km
Constant CO₂ loss key: constant_loss
Amount of CO₂ lost before it reached permanent storage.
Calculations
result = c o n s t a n t _ l o s s \text{result} = constant\_loss result = co n s t an t _ l oss
Monitored inputs
Input Key Display Name Quantity Kind Example Unit constant_lossConstant CO₂ loss Mass Carbon kgCO2e
Reduction Component Blueprints Constant CO₂ reduction key: constant_reduction
Amount of CO₂ activity emissions that have been reduced by other claims, such as Book and Claim Units.
Calculations
result = c o n s t a n t _ r e d u c t i o n \text{result} = constant\_reduction result = co n s t an t _ re d u c t i o n
Monitored inputs
Input Key Display Name Quantity Kind Example Unit constant_reductionConstant CO₂ reduction Mass Carbon kgCO2e
Sequestration Component Blueprints key: air_sea_co2_uptake
CO₂ stored via air-sea gas exchange, determined by the difference in uptake under project intervention and baseline conditions, measured via DIC. The calculation uses quantification outlined in the Air-sea CO₂ uptake protocol module.
Calculations
result = c o 2 _ n e t _ u p t a k e _ t 2 − c o 2 _ n e t _ u p t a k e _ t 1 \text{result} = co2\_net\_uptake\_t2 - co2\_net\_uptake\_t1 result = co 2_ n e t _ u pt ak e _ t 2 − co 2_ n e t _ u pt ak e _ t 1
co2_net_uptake_t2 = 3.667 C O 2 e q u i v a l e n t o f p u r e c a r b o n × d i c _ d e l t a _ t 2 \text{co2\_net\_uptake\_t2} = \overset{CO₂\ equivalent\ of\ pure\ carbon}{\text{3.667}} \times dic\_delta\_t2 co2_net_uptake_t2 = 3.667 C O 2 e q u i v a l e n t o f p u re c a r b o n × d i c _ d e lt a _ t 2 dic_delta_t2 = d i c _ i n t e r v e n t i o n _ t 2 − d i c _ b a s e l i n e _ t 2 \text{dic\_delta\_t2} = dic\_intervention\_t2 - dic\_baseline\_t2 dic_delta_t2 = d i c _ in t er v e n t i o n _ t 2 − d i c _ ba se l in e _ t 2 co2_net_uptake_t1 = 3.667 C O 2 e q u i v a l e n t o f p u r e c a r b o n × d i c _ d e l t a _ t 1 \text{co2\_net\_uptake\_t1} = \overset{CO₂\ equivalent\ of\ pure\ carbon}{\text{3.667}} \times dic\_delta\_t1 co2_net_uptake_t1 = 3.667 C O 2 e q u i v a l e n t o f p u re c a r b o n × d i c _ d e lt a _ t 1 dic_delta_t1 = d i c _ i n t e r v e n t i o n _ t 1 − d i c _ b a s e l i n e _ t 1 \text{dic\_delta\_t1} = dic\_intervention\_t1 - dic\_baseline\_t1 dic_delta_t1 = d i c _ in t er v e n t i o n _ t 1 − d i c _ ba se l in e _ t 1 Monitored inputs
Input Key Display Name Quantity Kind Example Unit dic_baseline_t1DIC under baseline, start of reporting period Mass kgdic_baseline_t2DIC under baseline, end of reporting period Mass kgdic_intervention_t1DIC under intervention, start of reporting period Mass kgdic_intervention_t2DIC under intervention, end of reporting period Mass kg
key: air_sea_co2_uptake_flux
CO₂ stored via air-sea gas exchange, determined by the difference in cumulative air-sea CO₂ flux under project intervention and baseline conditions. The calculation uses quantification outlined in the Air-sea CO₂ uptake protocol module.
Calculations
result = f l u x _ d e l t a _ t 2 − f l u x _ d e l t a _ t 1 \text{result} = flux\_delta\_t2 - flux\_delta\_t1 result = f l ux _ d e lt a _ t 2 − f l ux _ d e lt a _ t 1
flux_delta_t2 = f l u x _ i n t e r v e n t i o n _ t 2 − f l u x _ b a s e l i n e _ t 2 \text{flux\_delta\_t2} = flux\_intervention\_t2 - flux\_baseline\_t2 flux_delta_t2 = f l ux _ in t er v e n t i o n _ t 2 − f l ux _ ba se l in e _ t 2 flux_delta_t1 = f l u x _ i n t e r v e n t i o n _ t 1 − f l u x _ b a s e l i n e _ t 1 \text{flux\_delta\_t1} = flux\_intervention\_t1 - flux\_baseline\_t1 flux_delta_t1 = f l ux _ in t er v e n t i o n _ t 1 − f l ux _ ba se l in e _ t 1 Monitored inputs
Input Key Display Name Quantity Kind Example Unit flux_baseline_t1Air-sea CO₂ flux under baseline, start of reporting period Mass Carbon kgCO2eflux_baseline_t2Air-sea CO₂ flux under baseline, end of reporting period Mass Carbon kgCO2eflux_intervention_t1Air-sea CO₂ flux under intervention, start of reporting period Mass Carbon kgCO2eflux_intervention_t2Air-sea CO₂ flux under intervention, end of reporting period Mass Carbon kgCO2e
key: air_sea_co2_uptake_mass
CO₂ stored via air-sea gas exchange, determined by the mass of alkalinity added, alkalinity content and modelled efficiency of CO₂ uptake.
Calculations
result = t o t a l _ d o s e d _ a l k a l i n i t y × u p t a k e _ e f f i c i e n c y \text{result} = total\_dosed\_alkalinity \times uptake\_efficiency result = t o t a l _ d ose d _ a l ka l ini t y × u pt ak e _ e ff i c i e n cy
total_dosed_alkalinity = f e e d s t o c k _ m a s s × f e e d s t o c k _ a l k a l i n i t y _ m a s s _ f r a c t i o n \text{total\_dosed\_alkalinity} = feedstock\_mass \times feedstock\_alkalinity\_mass\_fraction total_dosed_alkalinity = f ee d s t oc k _ ma ss × f ee d s t oc k _ a l ka l ini t y _ ma ss _ f r a c t i o n uptake_efficiency = g r o s s _ c d r t o t a l _ d o s e d _ a l k a l i n i t y \text{uptake\_efficiency} = \frac{gross\_cdr}{total\_dosed\_alkalinity} uptake_efficiency = t o t a l _ d ose d _ a l ka l ini t y g ross _ c d r gross_cdr = m o d e l l e d _ c d r × a l k a l i n i t y _ c o r r e c t i o n _ f a c t o r \text{gross\_cdr} = modelled\_cdr \times alkalinity\_correction\_factor gross_cdr = m o d e ll e d _ c d r × a l ka l ini t y _ correc t i o n _ f a c t or modelled_cdr = n e a r _ f i e l d _ c d r + f a r _ f i e l d _ c d r \text{modelled\_cdr} = near\_field\_cdr + far\_field\_cdr modelled_cdr = n e a r _ f i e l d _ c d r + f a r _ f i e l d _ c d r near_field_cdr = n e a r _ f i e l d _ f l u x _ d e l t a _ t 2 − n e a r _ f i e l d _ f l u x _ d e l t a _ t 1 \text{near\_field\_cdr} = near\_field\_flux\_delta\_t2 - near\_field\_flux\_delta\_t1 near_field_cdr = n e a r _ f i e l d _ f l ux _ d e lt a _ t 2 − n e a r _ f i e l d _ f l ux _ d e lt a _ t 1 far_field_cdr = f a r _ f i e l d _ f l u x _ d e l t a _ t 2 − f a r _ f i e l d _ f l u x _ d e l t a _ t 1 \text{far\_field\_cdr} = far\_field\_flux\_delta\_t2 - far\_field\_flux\_delta\_t1 far_field_cdr = f a r _ f i e l d _ f l ux _ d e lt a _ t 2 − f a r _ f i e l d _ f l ux _ d e lt a _ t 1 alkalinity_correction_factor = f e e d s t o c k _ a l k a l i n i t y _ m a s s _ f r a c t i o n f e e d s t o c k _ a l k a l i n i t y _ m a s s _ f r a c t i o n _ p r e \text{alkalinity\_correction\_factor} = \frac{feedstock\_alkalinity\_mass\_fraction}{feedstock\_alkalinity\_mass\_fraction\_pre} alkalinity_correction_factor = f ee d s t oc k _ a l ka l ini t y _ ma ss _ f r a c t i o n _ p re f ee d s t oc k _ a l ka l ini t y _ ma ss _ f r a c t i o n Monitored inputs
Input Key Display Name Quantity Kind Example Unit far_field_flux_delta_t1Cumulative air-sea CO₂ flux delta in far field, start of reporting period Mass Carbon kgCO2efar_field_flux_delta_t2Cumulative air-sea CO₂ flux delta in far field, end of reporting period Mass Carbon kgCO2efeedstock_alkalinity_mass_fractionMass fraction of alkalinity in feedstock, final measured value Mass Fraction mg / kgfeedstock_alkalinity_mass_fraction_preMass fraction of alkalinity in feedstock, preliminary value Mass Fraction mg / kgfeedstock_massMass of feedstock added during reporting period Mass kgnear_field_flux_delta_t1Cumulative air-sea CO₂ flux delta in near field, start of reporting period Mass Carbon kgCO2enear_field_flux_delta_t2Cumulative air-sea CO₂ flux delta in near field, end of reporting period Mass Carbon kgCO2e
Biochar sequestration, 1000 year durability key: biochar_sequestration_1000_year
Amount of CO₂ stored via biochar sequestration, given biochar mass and samples evidencing random reflectance properties and carbon content. Applicable to the 1000 year durability option from the Biochar Storage in Agricultural Soils module based on assessment of biochar permanence according to Sanei et al. (2024).
Calculations
result = p r o d u c t _ m a s s × c a r b o n _ c o n t e n t s ‾ × d u r a b l e _ f r a c t i o n × 3.667 C O 2 e q u i v a l e n t o f p u r e c a r b o n \text{result} = product\_mass \times \overline{carbon\_contents} \times durable\_fraction \times \overset{CO₂\ equivalent\ of\ pure\ carbon}{\text{3.667}} result = p ro d u c t _ ma ss × c a r b o n _ co n t e n t s × d u r ab l e _ f r a c t i o n × 3.667 C O 2 e q u i v a l e n t o f p u re c a r b o n
durable_fraction = s _ f r a c t i o n ‾ − s _ s t a n d a r d _ e r r o r \text{durable\_fraction} = \overline{s\_fraction} - s\_standard\_error durable_fraction = s _ f r a c t i o n − s _ s t an d a r d _ error s_standard_error = s _ f r a c t i o n ‾ × ( 1 − s _ f r a c t i o n ‾ ) n u m _ s a m p l e s \text{s\_standard\_error} = \sqrt{\frac{\overline{s\_fraction} \times \left(1 - \overline{s\_fraction}\right)}{num\_samples}} s_standard_error = n u m _ s am pl es s _ f r a c t i o n × ( 1 − s _ f r a c t i o n ) num_samples = ∣ s _ f r a c t i o n ∣ \text{num\_samples} = \left| {s\_fraction} \right| num_samples = s _ f r a c t i o n Monitored inputs
Input Key Display Name Quantity Kind Example Unit carbon_contentsTotal carbon content of biochar Mass Fraction Dry Basis List mg / kgproduct_massMass of product Mass kgs_fractionFraction of reflectance samples above 2% benchmark in each sample Dimensionless List dimensionless
Biochar sequestration, 200 year durability key: biochar_sequestration_200_year
Amount of CO₂ stored via biochar sequestration, given a carbon content, mass and durable fraction measurement. Applicable to the 200 year durability option from the Biochar Storage in Agricultural Soils module. Parameters a, b and c from Woolf et al. (2021).
Calculations
result = p r o d u c t _ m a s s × c a r b o n _ c o n t e n t s ‾ × d u r a b l e _ f r a c t i o n × 3.667 C O 2 e q u i v a l e n t o f p u r e c a r b o n \text{result} = product\_mass \times \overline{carbon\_contents} \times durable\_fraction \times \overset{CO₂\ equivalent\ of\ pure\ carbon}{\text{3.667}} result = p ro d u c t _ ma ss × c a r b o n _ co n t e n t s × d u r ab l e _ f r a c t i o n × 3.667 C O 2 e q u i v a l e n t o f p u re c a r b o n
durable_fraction = 1 − n o n _ d u r a b l e _ f r a c t i o n \text{durable\_fraction} = 1 - non\_durable\_fraction durable_fraction = 1 − n o n _ d u r ab l e _ f r a c t i o n non_durable_fraction = -0.048 P a r a m e t e r c + ( -0.383 P a r a m e t e r a + 0.35 P a r a m e t e r b × l o g _ m e a n _ s o i l _ t e m p ) × h _ c _ m o l a r _ r a t i o s ‾ \text{non\_durable\_fraction} = \overset{Parameter\ c}{\text{-0.048}} + \left(\overset{Parameter\ a}{\text{-0.383}} + \overset{Parameter\ b}{\text{0.35}} \times log\_mean\_soil\_temp\right) \times \overline{h\_c\_molar\_ratios} non_durable_fraction = -0.048 P a r am e t er c + ( -0.383 P a r am e t er a + 0.35 P a r am e t er b × l o g _ m e an _ so i l _ t e m p ) × h _ c _ m o l a r _ r a t i os log_mean_soil_temp = ln ( n o r m a l i z e d _ m e a n _ s o i l _ t e m p ) \text{log\_mean\_soil\_temp} = \ln \left(normalized\_mean\_soil\_temp\right) log_mean_soil_temp = ln ( n or ma l i ze d _ m e an _ so i l _ t e m p ) normalized_mean_soil_temp = s o i l _ t e m p _ d e l t a 1.0 Δ °C C e l s i u s u n i t \text{normalized\_mean\_soil\_temp} = \frac{soil\_temp\_delta}{\overset{Celsius\ unit}{\text{1.0$\Delta$°C}}} normalized_mean_soil_temp = 1.0 Δ °C C e l s i u s u ni t so i l _ t e m p _ d e lt a soil_temp_delta = s o i l _ t e m p − 0.0°C Z e r o c e l s i u s \text{soil\_temp\_delta} = soil\_temp - \overset{Zero\ celsius}{\text{0.0°C}} soil_temp_delta = so i l _ t e m p − 0.0°C Z ero ce l s i u s Monitored inputs
Input Key Display Name Quantity Kind Example Unit carbon_contentsCarbon content of biochar Mass Fraction Dry Basis List mg / kgh_c_molar_ratiosHydrogen to organic carbon molar ratio Dimensionless Ratio List %product_massMass of product Mass kgsoil_tempMean average soil temperature Temperature degC
Biomass burial with moisture correction key: biomass_burial_with_moisture_correction
Amount of CO₂ stored, given a carbon concentration, mass and moisture contents. Applicable to quantifying CO₂ stored for the protocol Subsurface Biomass Carbon Removal and Storage.
Calculations
result = c a r b o n _ c o n t e n t × b u r i e d _ m a s s × c o 2 e _ o f _ c a r b o n × m o i s t u r e _ c o r r e c t i o n \text{result} = carbon\_content \times buried\_mass \times co2e\_of\_carbon \times moisture\_correction result = c a r b o n _ co n t e n t × b u r i e d _ ma ss × co 2 e _ o f _ c a r b o n × m o i s t u re _ correc t i o n
moisture_correction = 1 − a v e r a g e _ m a t e r i a l _ m o i s t u r e _ c o n t e n t 1 − a v e r a g e _ s a m p l e d _ m o i s t u r e _ c o n t e n t \text{moisture\_correction} = \frac{1 - average\_material\_moisture\_content}{1 - average\_sampled\_moisture\_content} moisture_correction = 1 − a v er a g e _ s am pl e d _ m o i s t u re _ co n t e n t 1 − a v er a g e _ ma t er ia l _ m o i s t u re _ co n t e n t Fixed inputs
Input Key Display Name Quantity Kind Example Unit co2e_of_carbonCO₂ equivalent of pure carbon Dimensionless dimensionless
Monitored inputs
Input Key Display Name Quantity Kind Example Unit average_material_moisture_contentAverage moisture content across all material buried Dimensionless dimensionlessaverage_sampled_moisture_contentAverage moisture content in samples used to determine carbon content Dimensionless dimensionlessburied_massMass of injectant buried Mass kgcarbon_contentCarbon content of injectant Dimensionless dimensionless
Biomass injection from winsorized mean key: biomass_injection_from_winsorized_mean
Amount of CO₂ stored, given a mass and multiple measured carbon concentration values, from which a mean is calculated. Outliers for the mean are accounted for by winsorizing the measured carbon contents with mean and standard deviation calculated from historical carbon contents from the same feedstock. Applicable to quantifying CO₂ stored for the protocols Biomass Geological Storage and Bio-oil Geological Storage.
Calculations
result = i n j e c t a n t _ m a s s × m e a n _ c a r b o n _ c o n t e n t × c o 2 e _ o f _ c a r b o n \text{result} = injectant\_mass \times mean\_carbon\_content \times co2e\_of\_carbon result = inj ec t an t _ ma ss × m e an _ c a r b o n _ co n t e n t × co 2 e _ o f _ c a r b o n
mean_carbon_content = WinsorizedMean ( i n j e c t a n t _ c a r b o n _ c o n t e n t _ m e a s u r e m e n t s , h i s t o r i c a l _ c a r b o n _ c o n t e n t _ m e a s u r e m e n t s ) \text{mean\_carbon\_content} = \text{WinsorizedMean}(injectant\_carbon\_content\_measurements,\allowbreak historical\_carbon\_content\_measurements) mean_carbon_content = WinsorizedMean ( inj ec t an t _ c a r b o n _ co n t e n t _ m e a s u re m e n t s , hi s t or i c a l _ c a r b o n _ co n t e n t _ m e a s u re m e n t s ) Fixed inputs
Input Key Display Name Quantity Kind Example Unit co2e_of_carbonCO₂ equivalent of pure carbon Dimensionless dimensionless
Monitored inputs
Input Key Display Name Quantity Kind Example Unit historical_carbon_content_measurementsHistorical carbon content measurements of injectant Dimensionless List dimensionlessinjectant_carbon_content_measurementsCarbon content measurements of injectant Dimensionless List dimensionlessinjectant_massMass of injectant Mass kg
Blended bio oil injection key: blended_bio_oil_injection
Amount of CO₂ stored, given a carbon concentration and mass. Applicable to quantifying CO₂ stored for Bio-oil Geological Storage when batches of bio-oil are blended prior to injection.
Calculations
result = u n b l e n d e d _ b i o _ o i l _ c a r b o n _ c o n t e n t s ‾ × u n b l e n d e d _ b i o _ o i l _ m a s s × c o 2 e _ o f _ c a r b o n \text{result} = \overline{unblended\_bio\_oil\_carbon\_contents} \times unblended\_bio\_oil\_mass \times co2e\_of\_carbon result = u nb l e n d e d _ bi o _ o i l _ c a r b o n _ co n t e n t s × u nb l e n d e d _ bi o _ o i l _ ma ss × co 2 e _ o f _ c a r b o n
unblended_bio_oil_mass = b l e n d e d _ b i o _ o i l _ m a s s − l i q u i d _ c a u s t i c _ s o d a _ m a s s − s a l t _ m a s s \text{unblended\_bio\_oil\_mass} = blended\_bio\_oil\_mass - liquid\_caustic\_soda\_mass - salt\_mass unblended_bio_oil_mass = b l e n d e d _ bi o _ o i l _ ma ss − l i q u i d _ c a u s t i c _ so d a _ ma ss − s a lt _ ma ss Fixed inputs
Input Key Display Name Quantity Kind Example Unit co2e_of_carbonCO₂ equivalent of pure carbon Dimensionless dimensionless
Monitored inputs
Input Key Display Name Quantity Kind Example Unit blended_bio_oil_massTotal mass of injectant after blending Mass kgliquid_caustic_soda_massLiquid caustic soda mass Mass kgsalt_massMass of salt Mass kgunblended_bio_oil_carbon_contentsCarbon content of unblended bio-oil Dimensionless List dimensionless
CO₂ removed from weathering using TICAT method key: enhanced_weathering_sequestration_ticat
CO₂ removed from weathering using the TICAT method described in Reershemius et al 2023.
Calculations
result = c a _ c o 2 _ r e m o v e d + m g _ c o 2 _ r e m o v e d + n a _ c o 2 _ r e m o v e d \text{result} = ca\_co2\_removed + mg\_co2\_removed + na\_co2\_removed result = c a _ co 2_ re m o v e d + m g _ co 2_ re m o v e d + na _ co 2_ re m o v e d
ca_co2_removed = f e e d s t o c k _ m a s s × c a _ f e e d s t o c k _ m a s s _ f r a c t i o n × c o n s e r v a t i v e _ m e a n _ c a _ w e a t h e r e d _ f r a c t i o n 40.078g/mol C a l c i u m m o l a r m a s s × 44.01g/mol C O 2 m o l a r m a s s × 2.0 C a l c i u m c h a r g e \text{ca\_co2\_removed} = \frac{feedstock\_mass \times ca\_feedstock\_mass\_fraction \times conservative\_mean\_ca\_weathered\_fraction}{\overset{Calcium\ molar\ mass}{\text{40.078g/mol}}} \times \overset{CO₂\ molar\ mass}{\text{44.01g/mol}} \times \overset{Calcium\ charge}{\text{2.0}} ca_co2_removed = 40.078g/mol C a l c i u m m o l a r ma ss f ee d s t oc k _ ma ss × c a _ f ee d s t oc k _ ma ss _ f r a c t i o n × co n ser v a t i v e _ m e an _ c a _ w e a t h ere d _ f r a c t i o n × 44.01g/mol C O 2 m o l a r ma ss × 2.0 C a l c i u m c ha r g e conservative_mean_ca_weathered_fraction = ConservativeMeanBootstrapEstimator ( o u t l i e r _ d e t e c t i o n _ c a _ w e a t h e r e d _ f r a c t i o n ) \text{conservative\_mean\_ca\_weathered\_fraction} = \text{ConservativeMeanBootstrapEstimator}(outlier\_detection\_ca\_weathered\_fraction) conservative_mean_ca_weathered_fraction = ConservativeMeanBootstrapEstimator ( o u tl i er _ d e t ec t i o n _ c a _ w e a t h ere d _ f r a c t i o n ) outlier_detection_ca_weathered_fraction = ModifiedZScoreOutlierDetection ( c a _ w e a t h e r e d _ f r a c t i o n ) \text{outlier\_detection\_ca\_weathered\_fraction} = \text{ModifiedZScoreOutlierDetection}(ca\_weathered\_fraction) outlier_detection_ca_weathered_fraction = ModifiedZScoreOutlierDetection ( c a _ w e a t h ere d _ f r a c t i o n ) ca_weathered_fraction = DivideAndFilterZeroDenominator ( c a _ l o s t , t r a c e r _ s o i l _ m a s s _ f r a c t i o n _ i n c r e a s e t r a c e r _ f e e d s t o c k _ b a s e l i n e _ d i f f × c a _ f e e d s t o c k _ m a s s _ f r a c t i o n _ s u r p l u s ) \text{ca\_weathered\_fraction} = \text{DivideAndFilterZeroDenominator}(ca\_lost,\allowbreak \frac{tracer\_soil\_mass\_fraction\_increase}{tracer\_feedstock\_baseline\_diff} \times ca\_feedstock\_mass\_fraction\_surplus) ca_weathered_fraction = DivideAndFilterZeroDenominator ( c a _ l os t , t r a cer _ f ee d s t oc k _ ba se l in e _ d i ff t r a cer _ so i l _ ma ss _ f r a c t i o n _ in cre a se × c a _ f ee d s t oc k _ ma ss _ f r a c t i o n _ s u r pl u s ) ca_lost = t r a c e r _ s o i l _ m a s s _ f r a c t i o n _ i n c r e a s e t r a c e r _ f e e d s t o c k _ b a s e l i n e _ d i f f × c a _ f e e d s t o c k _ m a s s _ f r a c t i o n _ s u r p l u s + c a _ b a s e l i n e _ s o i l _ m a s s _ f r a c t i o n − c a _ e n d _ s o i l _ m a s s _ f r a c t i o n \text{ca\_lost} = \frac{tracer\_soil\_mass\_fraction\_increase}{tracer\_feedstock\_baseline\_diff} \times ca\_feedstock\_mass\_fraction\_surplus + ca\_baseline\_soil\_mass\_fraction - ca\_end\_soil\_mass\_fraction ca_lost = t r a cer _ f ee d s t oc k _ ba se l in e _ d i ff t r a cer _ so i l _ ma ss _ f r a c t i o n _ in cre a se × c a _ f ee d s t oc k _ ma ss _ f r a c t i o n _ s u r pl u s + c a _ ba se l in e _ so i l _ ma ss _ f r a c t i o n − c a _ e n d _ so i l _ ma ss _ f r a c t i o n tracer_soil_mass_fraction_increase = t r a c e r _ e n d _ s o i l _ m a s s _ f r a c t i o n − t r a c e r _ b a s e l i n e _ s o i l _ m a s s _ f r a c t i o n \text{tracer\_soil\_mass\_fraction\_increase} = tracer\_end\_soil\_mass\_fraction - tracer\_baseline\_soil\_mass\_fraction tracer_soil_mass_fraction_increase = t r a cer _ e n d _ so i l _ ma ss _ f r a c t i o n − t r a cer _ ba se l in e _ so i l _ ma ss _ f r a c t i o n tracer_feedstock_baseline_diff = t r a c e r _ f e e d s t o c k _ m a s s _ f r a c t i o n − t r a c e r _ b a s e l i n e _ s o i l _ m a s s _ f r a c t i o n \text{tracer\_feedstock\_baseline\_diff} = tracer\_feedstock\_mass\_fraction - tracer\_baseline\_soil\_mass\_fraction tracer_feedstock_baseline_diff = t r a cer _ f ee d s t oc k _ ma ss _ f r a c t i o n − t r a cer _ ba se l in e _ so i l _ ma ss _ f r a c t i o n ca_feedstock_mass_fraction_surplus = c a _ f e e d s t o c k _ m a s s _ f r a c t i o n − c a _ b a s e l i n e _ s o i l _ m a s s _ f r a c t i o n \text{ca\_feedstock\_mass\_fraction\_surplus} = ca\_feedstock\_mass\_fraction - ca\_baseline\_soil\_mass\_fraction ca_feedstock_mass_fraction_surplus = c a _ f ee d s t oc k _ ma ss _ f r a c t i o n − c a _ ba se l in e _ so i l _ ma ss _ f r a c t i o n mg_co2_removed = f e e d s t o c k _ m a s s × m g _ f e e d s t o c k _ m a s s _ f r a c t i o n × c o n s e r v a t i v e _ m e a n _ m g _ w e a t h e r e d _ f r a c t i o n 24.305g/mol M a g n e s i u m m o l a r m a s s × 44.01g/mol C O 2 m o l a r m a s s × 2.0 M a g n e s i u m c h a r g e \text{mg\_co2\_removed} = \frac{feedstock\_mass \times mg\_feedstock\_mass\_fraction \times conservative\_mean\_mg\_weathered\_fraction}{\overset{Magnesium\ molar\ mass}{\text{24.305g/mol}}} \times \overset{CO₂\ molar\ mass}{\text{44.01g/mol}} \times \overset{Magnesium\ charge}{\text{2.0}} mg_co2_removed = 24.305g/mol M a g n es i u m m o l a r ma ss f ee d s t oc k _ ma ss × m g _ f ee d s t oc k _ ma ss _ f r a c t i o n × co n ser v a t i v e _ m e an _ m g _ w e a t h ere d _ f r a c t i o n × 44.01g/mol C O 2 m o l a r ma ss × 2.0 M a g n es i u m c ha r g e conservative_mean_mg_weathered_fraction = ConservativeMeanBootstrapEstimator ( o u t l i e r _ d e t e c t i o n _ m g _ w e a t h e r e d _ f r a c t i o n ) \text{conservative\_mean\_mg\_weathered\_fraction} = \text{ConservativeMeanBootstrapEstimator}(outlier\_detection\_mg\_weathered\_fraction) conservative_mean_mg_weathered_fraction = ConservativeMeanBootstrapEstimator ( o u tl i er _ d e t ec t i o n _ m g _ w e a t h ere d _ f r a c t i o n ) outlier_detection_mg_weathered_fraction = ModifiedZScoreOutlierDetection ( m g _ w e a t h e r e d _ f r a c t i o n ) \text{outlier\_detection\_mg\_weathered\_fraction} = \text{ModifiedZScoreOutlierDetection}(mg\_weathered\_fraction) outlier_detection_mg_weathered_fraction = ModifiedZScoreOutlierDetection ( m g _ w e a t h ere d _ f r a c t i o n ) mg_weathered_fraction = DivideAndFilterZeroDenominator ( m g _ l o s t , t r a c e r _ s o i l _ m a s s _ f r a c t i o n _ i n c r e a s e t r a c e r _ f e e d s t o c k _ b a s e l i n e _ d i f f × m g _ f e e d s t o c k _ m a s s _ f r a c t i o n _ s u r p l u s ) \text{mg\_weathered\_fraction} = \text{DivideAndFilterZeroDenominator}(mg\_lost,\allowbreak \frac{tracer\_soil\_mass\_fraction\_increase}{tracer\_feedstock\_baseline\_diff} \times mg\_feedstock\_mass\_fraction\_surplus) mg_weathered_fraction = DivideAndFilterZeroDenominator ( m g _ l os t , t r a cer _ f ee d s t oc k _ ba se l in e _ d i ff t r a cer _ so i l _ ma ss _ f r a c t i o n _ in cre a se × m g _ f ee d s t oc k _ ma ss _ f r a c t i o n _ s u r pl u s ) mg_lost = t r a c e r _ s o i l _ m a s s _ f r a c t i o n _ i n c r e a s e t r a c e r _ f e e d s t o c k _ b a s e l i n e _ d i f f × m g _ f e e d s t o c k _ m a s s _ f r a c t i o n _ s u r p l u s + m g _ b a s e l i n e _ s o i l _ m a s s _ f r a c t i o n − m g _ e n d _ s o i l _ m a s s _ f r a c t i o n \text{mg\_lost} = \frac{tracer\_soil\_mass\_fraction\_increase}{tracer\_feedstock\_baseline\_diff} \times mg\_feedstock\_mass\_fraction\_surplus + mg\_baseline\_soil\_mass\_fraction - mg\_end\_soil\_mass\_fraction mg_lost = t r a cer _ f ee d s t oc k _ ba se l in e _ d i ff t r a cer _ so i l _ ma ss _ f r a c t i o n _ in cre a se × m g _ f ee d s t oc k _ ma ss _ f r a c t i o n _ s u r pl u s + m g _ ba se l in e _ so i l _ ma ss _ f r a c t i o n − m g _ e n d _ so i l _ ma ss _ f r a c t i o n mg_feedstock_mass_fraction_surplus = m g _ f e e d s t o c k _ m a s s _ f r a c t i o n − m g _ b a s e l i n e _ s o i l _ m a s s _ f r a c t i o n \text{mg\_feedstock\_mass\_fraction\_surplus} = mg\_feedstock\_mass\_fraction - mg\_baseline\_soil\_mass\_fraction mg_feedstock_mass_fraction_surplus = m g _ f ee d s t oc k _ ma ss _ f r a c t i o n − m g _ ba se l in e _ so i l _ ma ss _ f r a c t i o n na_co2_removed = f e e d s t o c k _ m a s s × n a _ f e e d s t o c k _ m a s s _ f r a c t i o n × c o n s e r v a t i v e _ m e a n _ n a _ w e a t h e r e d _ f r a c t i o n 22.99g/mol S o d i u m m o l a r m a s s × 44.01g/mol C O 2 m o l a r m a s s × 1.0 S o d i u m c h a r g e \text{na\_co2\_removed} = \frac{feedstock\_mass \times na\_feedstock\_mass\_fraction \times conservative\_mean\_na\_weathered\_fraction}{\overset{Sodium\ molar\ mass}{\text{22.99g/mol}}} \times \overset{CO₂\ molar\ mass}{\text{44.01g/mol}} \times \overset{Sodium\ charge}{\text{1.0}} na_co2_removed = 22.99g/mol S o d i u m m o l a r ma ss f ee d s t oc k _ ma ss × na _ f ee d s t oc k _ ma ss _ f r a c t i o n × co n ser v a t i v e _ m e an _ na _ w e a t h ere d _ f r a c t i o n × 44.01g/mol C O 2 m o l a r ma ss × 1.0 S o d i u m c ha r g e conservative_mean_na_weathered_fraction = ConservativeMeanBootstrapEstimator ( o u t l i e r _ d e t e c t i o n _ n a _ w e a t h e r e d _ f r a c t i o n ) \text{conservative\_mean\_na\_weathered\_fraction} = \text{ConservativeMeanBootstrapEstimator}(outlier\_detection\_na\_weathered\_fraction) conservative_mean_na_weathered_fraction = ConservativeMeanBootstrapEstimator ( o u tl i er _ d e t ec t i o n _ na _ w e a t h ere d _ f r a c t i o n ) outlier_detection_na_weathered_fraction = ModifiedZScoreOutlierDetection ( n a _ w e a t h e r e d _ f r a c t i o n ) \text{outlier\_detection\_na\_weathered\_fraction} = \text{ModifiedZScoreOutlierDetection}(na\_weathered\_fraction) outlier_detection_na_weathered_fraction = ModifiedZScoreOutlierDetection ( na _ w e a t h ere d _ f r a c t i o n ) na_weathered_fraction = DivideAndFilterZeroDenominator ( n a _ l o s t , t r a c e r _ s o i l _ m a s s _ f r a c t i o n _ i n c r e a s e t r a c e r _ f e e d s t o c k _ b a s e l i n e _ d i f f × n a _ f e e d s t o c k _ m a s s _ f r a c t i o n _ s u r p l u s ) \text{na\_weathered\_fraction} = \text{DivideAndFilterZeroDenominator}(na\_lost,\allowbreak \frac{tracer\_soil\_mass\_fraction\_increase}{tracer\_feedstock\_baseline\_diff} \times na\_feedstock\_mass\_fraction\_surplus) na_weathered_fraction = DivideAndFilterZeroDenominator ( na _ l os t , t r a cer _ f ee d s t oc k _ ba se l in e _ d i ff t r a cer _ so i l _ ma ss _ f r a c t i o n _ in cre a se × na _ f ee d s t oc k _ ma ss _ f r a c t i o n _ s u r pl u s ) na_lost = t r a c e r _ s o i l _ m a s s _ f r a c t i o n _ i n c r e a s e t r a c e r _ f e e d s t o c k _ b a s e l i n e _ d i f f × n a _ f e e d s t o c k _ m a s s _ f r a c t i o n _ s u r p l u s + n a _ b a s e l i n e _ s o i l _ m a s s _ f r a c t i o n − n a _ e n d _ s o i l _ m a s s _ f r a c t i o n \text{na\_lost} = \frac{tracer\_soil\_mass\_fraction\_increase}{tracer\_feedstock\_baseline\_diff} \times na\_feedstock\_mass\_fraction\_surplus + na\_baseline\_soil\_mass\_fraction - na\_end\_soil\_mass\_fraction na_lost = t r a cer _ f ee d s t oc k _ ba se l in e _ d i ff t r a cer _ so i l _ ma ss _ f r a c t i o n _ in cre a se × na _ f ee d s t oc k _ ma ss _ f r a c t i o n _ s u r pl u s + na _ ba se l in e _ so i l _ ma ss _ f r a c t i o n − na _ e n d _ so i l _ ma ss _ f r a c t i o n na_feedstock_mass_fraction_surplus = n a _ f e e d s t o c k _ m a s s _ f r a c t i o n − n a _ b a s e l i n e _ s o i l _ m a s s _ f r a c t i o n \text{na\_feedstock\_mass\_fraction\_surplus} = na\_feedstock\_mass\_fraction - na\_baseline\_soil\_mass\_fraction na_feedstock_mass_fraction_surplus = na _ f ee d s t oc k _ ma ss _ f r a c t i o n − na _ ba se l in e _ so i l _ ma ss _ f r a c t i o n Monitored inputs
Input Key Display Name Quantity Kind Example Unit ca_baseline_soil_mass_fractionBaseline calcium mass fraction in soil Mass Fraction List mg / kgca_end_soil_mass_fractionCalcium mass fraction in soil at end of reporting period Mass Fraction List mg / kgca_feedstock_mass_fractionCalcium mass fraction in feedstock Mass Fraction mg / kgfeedstock_massMass of feedstock Mass kgmg_baseline_soil_mass_fractionBaseline magnesium mass fraction in soil Mass Fraction List mg / kgmg_end_soil_mass_fractionMagnesium mass fraction in soil at end of reporting period Mass Fraction List mg / kgmg_feedstock_mass_fractionMagnesium mass fraction in feedstock Mass Fraction mg / kgna_baseline_soil_mass_fractionBaseline sodium mass fraction in soil Mass Fraction List mg / kgna_end_soil_mass_fractionSodium mass fraction in soil at end of reporting period Mass Fraction List mg / kgna_feedstock_mass_fractionSodium mass fraction in feedstock Mass Fraction mg / kgtracer_baseline_soil_mass_fractionTracer mass fraction in soil before application Mass Fraction List mg / kgtracer_end_soil_mass_fractionTracer mass fraction in soil at end of reporting period Mass Fraction List mg / kgtracer_feedstock_mass_fractionTracer mass fraction in feedstock Mass Fraction mg / kg
CO₂ removed from weathering using tracer ratio method key: enhanced_weathering_sequestration_ticat_ratio
CO₂ removed from weathering using the tracer ratio method.
Calculations
result = a v e r a g e _ f _ d × f e e d s t o c k _ m a s s × c a t i o n _ f e e d s t o c k _ c o n c e n t r a t i o n × c a t i o n _ c h a r g e × c o 2 _ m o l a r _ m a s s c a t i o n _ m o l a r _ m a s s \text{result} = \frac{average\_f\_d \times feedstock\_mass \times cation\_feedstock\_concentration \times cation\_charge \times co2\_molar\_mass}{cation\_molar\_mass} result = c a t i o n _ m o l a r _ ma ss a v er a g e _ f _ d × f ee d s t oc k _ ma ss × c a t i o n _ f ee d s t oc k _ co n ce n t r a t i o n × c a t i o n _ c ha r g e × co 2_ m o l a r _ ma ss
average_f_d = ConservativeMeanBootstrapEstimator ( f _ d _ n o _ o u t l i e r s ) \text{average\_f\_d} = \text{ConservativeMeanBootstrapEstimator}(f\_d\_no\_outliers) average_f_d = ConservativeMeanBootstrapEstimator ( f _ d _ n o _ o u tl i ers ) f_d_no_outliers = ModifiedZScoreOutlierDetection ( f _ d ) \text{f\_d\_no\_outliers} = \text{ModifiedZScoreOutlierDetection}(f\_d) f_d_no_outliers = ModifiedZScoreOutlierDetection ( f _ d ) f_d = c a t i o n _ a d d e d _ f r o m _ f e e d s t o c k + c a t i o n _ b a s e l i n e _ s o i l _ c o n c e n t r a t i o n − c a t i o n _ p o s t _ a p p l i c a t i o n _ c o n c e n t r a t i o n c a t i o n _ f e e d s t o c k _ c o n c e n t r a t i o n × f e e d s t o c k _ m a s s _ f r a c t i o n \text{f\_d} = \frac{cation\_added\_from\_feedstock + cation\_baseline\_soil\_concentration - cation\_post\_application\_concentration}{cation\_feedstock\_concentration \times feedstock\_mass\_fraction} f_d = c a t i o n _ f ee d s t oc k _ co n ce n t r a t i o n × f ee d s t oc k _ ma ss _ f r a c t i o n c a t i o n _ a dd e d _ f ro m _ f ee d s t oc k + c a t i o n _ ba se l in e _ so i l _ co n ce n t r a t i o n − c a t i o n _ p os t _ a ppl i c a t i o n _ co n ce n t r a t i o n cation_added_from_feedstock = f e e d s t o c k _ m a s s _ f r a c t i o n × ( c a t i o n _ f e e d s t o c k _ c o n c e n t r a t i o n − c a t i o n _ b a s e l i n e _ s o i l _ c o n c e n t r a t i o n ) \text{cation\_added\_from\_feedstock} = feedstock\_mass\_fraction \times \left(cation\_feedstock\_concentration - cation\_baseline\_soil\_concentration\right) cation_added_from_feedstock = f ee d s t oc k _ ma ss _ f r a c t i o n × ( c a t i o n _ f ee d s t oc k _ co n ce n t r a t i o n − c a t i o n _ ba se l in e _ so i l _ co n ce n t r a t i o n ) feedstock_mass_fraction = f e e d s t o c k _ m a s s _ f r a c t i o n _ n u m e r a t o r f e e d s t o c k _ m a s s _ f r a c t i o n _ d e n o m i n a t o r \text{feedstock\_mass\_fraction} = \frac{feedstock\_mass\_fraction\_numerator}{feedstock\_mass\_fraction\_denominator} feedstock_mass_fraction = f ee d s t oc k _ ma ss _ f r a c t i o n _ d e n o mina t or f ee d s t oc k _ ma ss _ f r a c t i o n _ n u m er a t or feedstock_mass_fraction_numerator = i m m o b i l e _ t r a c e r _ r a t i o × t r a c e r _ 2 _ b a s e l i n e _ s o i l _ c o n c e n t r a t i o n − t r a c e r _ 1 _ b a s e l i n e _ s o i l _ c o n c e n t r a t i o n \text{feedstock\_mass\_fraction\_numerator} = immobile\_tracer\_ratio \times tracer\_2\_baseline\_soil\_concentration - tracer\_1\_baseline\_soil\_concentration feedstock_mass_fraction_numerator = imm o bi l e _ t r a cer _ r a t i o × t r a cer _2_ ba se l in e _ so i l _ co n ce n t r a t i o n − t r a cer _1_ ba se l in e _ so i l _ co n ce n t r a t i o n immobile_tracer_ratio = t r a c e r _ 1 _ p o s t _ a p p l i c a t i o n _ c o n c e n t r a t i o n t r a c e r _ 2 _ p o s t _ a p p l i c a t i o n _ c o n c e n t r a t i o n \text{immobile\_tracer\_ratio} = \frac{tracer\_1\_post\_application\_concentration}{tracer\_2\_post\_application\_concentration} immobile_tracer_ratio = t r a cer _2_ p os t _ a ppl i c a t i o n _ co n ce n t r a t i o n t r a cer _1_ p os t _ a ppl i c a t i o n _ co n ce n t r a t i o n feedstock_mass_fraction_denominator = t r a c e r _ 1 _ f e e d s t o c k _ c o n c e n t r a t i o n − t r a c e r _ 1 _ b a s e l i n e _ s o i l _ c o n c e n t r a t i o n − i m m o b i l e _ t r a c e r _ r a t i o × ( t r a c e r _ 2 _ f e e d s t o c k _ c o n c e n t r a t i o n − t r a c e r _ 2 _ b a s e l i n e _ s o i l _ c o n c e n t r a t i o n ) \text{feedstock\_mass\_fraction\_denominator} = tracer\_1\_feedstock\_concentration - tracer\_1\_baseline\_soil\_concentration - immobile\_tracer\_ratio \times \left(tracer\_2\_feedstock\_concentration - tracer\_2\_baseline\_soil\_concentration\right) feedstock_mass_fraction_denominator = t r a cer _1_ f ee d s t oc k _ co n ce n t r a t i o n − t r a cer _1_ ba se l in e _ so i l _ co n ce n t r a t i o n − imm o bi l e _ t r a cer _ r a t i o × ( t r a cer _2_ f ee d s t oc k _ co n ce n t r a t i o n − t r a cer _2_ ba se l in e _ so i l _ co n ce n t r a t i o n ) Fixed inputs
Input Key Display Name Quantity Kind Example Unit cation_molar_massMolar mass of cation Molar Mass g / molco2_molar_massMolar mass of CO₂ Molar Mass g / mol
Monitored inputs
Input Key Display Name Quantity Kind Example Unit cation_baseline_soil_concentrationCation concentration in baseline soil Mass Fraction List mg / kgcation_chargeCation charge Dimensionless dimensionlesscation_feedstock_concentrationCation concentration in feedstock Mass Fraction mg / kgcation_post_application_concentrationCation concentration in soil at end of reporting period Mass Fraction List mg / kgfeedstock_massMass of feedstock Mass kgtracer_1_baseline_soil_concentrationTracer 1 concentration in baseline soil Mass Fraction List mg / kgtracer_1_feedstock_concentrationTracer 1 concentration in feedstock Mass Fraction mg / kgtracer_1_post_application_concentrationTracer 1 concentration in soil at end of reporting period Mass Fraction List mg / kgtracer_2_baseline_soil_concentrationTracer 2 concentration in baseline soil Mass Fraction List mg / kgtracer_2_feedstock_concentrationTracer 2 concentration in feedstock Mass Fraction mg / kgtracer_2_post_application_concentrationTracer 2 concentration in soil at end of reporting period Mass Fraction List mg / kg
CO₂ stored via mineralization key: dac_mineralized_co2
CO₂ stored via mineralization, determined by the difference in mass of carbonated material at the start and end of the batch process.
Calculations
result = c o 2 _ m i n e r a l i z e d _ d e l t a × ( 1 − r e v e r s a l _ r i s k ) \text{result} = co2\_mineralized\_delta \times \left(1 - reversal\_risk\right) result = co 2_ min er a l i ze d _ d e lt a × ( 1 − re v ers a l _ r i s k )
co2_mineralized_delta = c o 2 _ m i n e r a l i z e d _ t 2 − c o 2 _ m i n e r a l i z e d _ t 1 \text{co2\_mineralized\_delta} = co2\_mineralized\_t2 - co2\_mineralized\_t1 co2_mineralized_delta = co 2_ min er a l i ze d _ t 2 − co 2_ min er a l i ze d _ t 1 co2_mineralized_t2 = m a t e r i a l _ d r y _ w e i g h t _ t 2 × c a r b o n _ c o n t e n t _ t 2 × 3.667 C O 2 e q u i v a l e n t o f p u r e c a r b o n \text{co2\_mineralized\_t2} = material\_dry\_weight\_t2 \times carbon\_content\_t2 \times \overset{CO₂\ equivalent\ of\ pure\ carbon}{\text{3.667}} co2_mineralized_t2 = ma t er ia l _ d ry _ w e i g h t _ t 2 × c a r b o n _ co n t e n t _ t 2 × 3.667 C O 2 e q u i v a l e n t o f p u re c a r b o n material_dry_weight_t2 = m a t e r i a l _ w e i g h t _ t 2 × ( 1 − m o i s t u r e _ c o n t e n t _ t 2 ) \text{material\_dry\_weight\_t2} = material\_weight\_t2 \times \left(1 - moisture\_content\_t2\right) material_dry_weight_t2 = ma t er ia l _ w e i g h t _ t 2 × ( 1 − m o i s t u re _ co n t e n t _ t 2 ) co2_mineralized_t1 = m a t e r i a l _ d r y _ w e i g h t _ t 1 × c a r b o n _ c o n t e n t _ t 1 × 3.667 C O 2 e q u i v a l e n t o f p u r e c a r b o n \text{co2\_mineralized\_t1} = material\_dry\_weight\_t1 \times carbon\_content\_t1 \times \overset{CO₂\ equivalent\ of\ pure\ carbon}{\text{3.667}} co2_mineralized_t1 = ma t er ia l _ d ry _ w e i g h t _ t 1 × c a r b o n _ co n t e n t _ t 1 × 3.667 C O 2 e q u i v a l e n t o f p u re c a r b o n material_dry_weight_t1 = m a t e r i a l _ w e i g h t _ t 1 × ( 1 − m o i s t u r e _ c o n t e n t _ t 1 ) \text{material\_dry\_weight\_t1} = material\_weight\_t1 \times \left(1 - moisture\_content\_t1\right) material_dry_weight_t1 = ma t er ia l _ w e i g h t _ t 1 × ( 1 − m o i s t u re _ co n t e n t _ t 1 ) Monitored inputs
Input Key Display Name Quantity Kind Example Unit carbon_content_t1Carbon content, start of batch process Mass Ratio kg / tonnecarbon_content_t2Carbon content, end of batch process Mass Ratio kg / tonnematerial_weight_t1Weight of carbonated material, start of batch process Mass kgmaterial_weight_t2Weight of carbonated material, end of batch process Mass kgmoisture_content_t1Moisture content, start of batch process Mass Ratio kg / tonnemoisture_content_t2Moisture content, end of batch process Mass Ratio kg / tonnereversal_riskRisk of reversal Percentage %
CO₂e sequestered post losses key: iemt_with_losses_2024_11
CO₂ removed from weathering using the immobile element method described in Reershemius et al 2023.
Calculations
result = ( s e q u e s t r a t i o n _ o u t p u t _ t o t a l − s t r o n g _ a c i d _ l o s s − p l a n t _ u p t a k e _ l o s s ) × r i v e r _ r e t e n t i o n _ f a c t o r × o c e a n _ r e t e n t i o n _ f a c t o r \text{result} = \left(sequestration\_output\_total - strong\_acid\_loss - plant\_uptake\_loss\right) \times river\_retention\_factor \times ocean\_retention\_factor result = ( se q u es t r a t i o n _ o u tp u t _ t o t a l − s t ro n g _ a c i d _ l oss − pl an t _ u pt ak e _ l oss ) × r i v er _ re t e n t i o n _ f a c t or × oce an _ re t e n t i o n _ f a c t or
sequestration_output_total = c a _ s e q u e s t r a t i o n _ o u t p u t + m g _ s e q u e s t r a t i o n _ o u t p u t \text{sequestration\_output\_total} = ca\_sequestration\_output + mg\_sequestration\_output sequestration_output_total = c a _ se q u es t r a t i o n _ o u tp u t + m g _ se q u es t r a t i o n _ o u tp u t ca_sequestration_output = c a _ a v e r a g e _ f _ d × f e e d s t o c k _ m a s s × c a _ c a t i o n _ f e e d s t o c k _ c o n c e n t r a t i o n × 2.0 C a l c i u m c h a r g e × 44.01g/mol C O 2 m o l a r m a s s 40.078g/mol C a l c i u m m o l a r m a s s \text{ca\_sequestration\_output} = \frac{ca\_average\_f\_d \times feedstock\_mass \times ca\_cation\_feedstock\_concentration \times \overset{Calcium\ charge}{\text{2.0}} \times \overset{CO₂\ molar\ mass}{\text{44.01g/mol}}}{\overset{Calcium\ molar\ mass}{\text{40.078g/mol}}} ca_sequestration_output = 40.078g/mol C a l c i u m m o l a r ma ss c a _ a v er a g e _ f _ d × f ee d s t oc k _ ma ss × c a _ c a t i o n _ f ee d s t oc k _ co n ce n t r a t i o n × 2.0 C a l c i u m c ha r g e × 44.01g/mol C O 2 m o l a r ma ss ca_average_f_d = ConservativeMeanBootstrapEstimatorWithOutlierDetection ( c a _ f _ d ) \text{ca\_average\_f\_d} = \text{ConservativeMeanBootstrapEstimatorWithOutlierDetection}(ca\_f\_d) ca_average_f_d = ConservativeMeanBootstrapEstimatorWithOutlierDetection ( c a _ f _ d ) ca_f_d = c a _ c a t i o n _ a d d e d _ f r o m _ f e e d s t o c k + c a _ c a t i o n _ b a s e l i n e _ s o i l _ c o n c e n t r a t i o n − c a _ c a t i o n _ p o s t _ a p p l i c a t i o n _ c o n c e n t r a t i o n − c a _ _ c o n t r o l _ c o r r e c t i o n c a _ c a t i o n _ f e e d s t o c k _ c o n c e n t r a t i o n × t r a c e r _ s o i l _ c o n c e n t r a t i o n _ i n c r e a s e t r a c e r _ f e e d s t o c k _ b a s e l i n e _ d i f f \text{ca\_f\_d} = \frac{ca\_cation\_added\_from\_feedstock + ca\_cation\_baseline\_soil\_concentration - ca\_cation\_post\_application\_concentration - ca\_\_control\_correction}{ca\_cation\_feedstock\_concentration \times \frac{tracer\_soil\_concentration\_increase}{tracer\_feedstock\_baseline\_diff}} ca_f_d = c a _ c a t i o n _ f ee d s t oc k _ co n ce n t r a t i o n × t r a cer _ f ee d s t oc k _ ba se l in e _ d i ff t r a cer _ so i l _ co n ce n t r a t i o n _ in cre a se c a _ c a t i o n _ a dd e d _ f ro m _ f ee d s t oc k + c a _ c a t i o n _ ba se l in e _ so i l _ co n ce n t r a t i o n − c a _ c a t i o n _ p os t _ a ppl i c a t i o n _ co n ce n t r a t i o n − c a __ co n t ro l _ correc t i o n ca_cation_added_from_feedstock = t r a c e r _ s o i l _ c o n c e n t r a t i o n _ i n c r e a s e t r a c e r _ f e e d s t o c k _ b a s e l i n e _ d i f f × ( c a _ c a t i o n _ f e e d s t o c k _ c o n c e n t r a t i o n − c a _ c a t i o n _ b a s e l i n e _ s o i l _ c o n c e n t r a t i o n ) \text{ca\_cation\_added\_from\_feedstock} = \frac{tracer\_soil\_concentration\_increase}{tracer\_feedstock\_baseline\_diff} \times \left(ca\_cation\_feedstock\_concentration - ca\_cation\_baseline\_soil\_concentration\right) ca_cation_added_from_feedstock = t r a cer _ f ee d s t oc k _ ba se l in e _ d i ff t r a cer _ so i l _ co n ce n t r a t i o n _ in cre a se × ( c a _ c a t i o n _ f ee d s t oc k _ co n ce n t r a t i o n − c a _ c a t i o n _ ba se l in e _ so i l _ co n ce n t r a t i o n ) tracer_soil_concentration_increase = t r a c e r _ p o s t _ a p p l i c a t i o n _ c o n c e n t r a t i o n − t r a c e r _ b a s e l i n e _ s o i l _ c o n c e n t r a t i o n \text{tracer\_soil\_concentration\_increase} = tracer\_post\_application\_concentration - tracer\_baseline\_soil\_concentration tracer_soil_concentration_increase = t r a cer _ p os t _ a ppl i c a t i o n _ co n ce n t r a t i o n − t r a cer _ ba se l in e _ so i l _ co n ce n t r a t i o n tracer_feedstock_baseline_diff = t r a c e r _ f e e d s t o c k _ c o n c e n t r a t i o n − t r a c e r _ b a s e l i n e _ s o i l _ c o n c e n t r a t i o n \text{tracer\_feedstock\_baseline\_diff} = tracer\_feedstock\_concentration - tracer\_baseline\_soil\_concentration tracer_feedstock_baseline_diff = t r a cer _ f ee d s t oc k _ co n ce n t r a t i o n − t r a cer _ ba se l in e _ so i l _ co n ce n t r a t i o n ca__control_correction = c a _ c a t i o n _ b a s e l i n e _ s o i l _ c o n c e n t r a t i o n _ c o n t r o l ‾ − c a _ c a t i o n _ p o s t _ a p p l i c a t i o n _ c o n c e n t r a t i o n _ c o n t r o l ‾ \text{ca\_\_control\_correction} = \overline{ca\_cation\_baseline\_soil\_concentration\_control} - \overline{ca\_cation\_post\_application\_concentration\_control} ca__control_correction = c a _ c a t i o n _ ba se l in e _ so i l _ co n ce n t r a t i o n _ co n t ro l − c a _ c a t i o n _ p os t _ a ppl i c a t i o n _ co n ce n t r a t i o n _ co n t ro l mg_sequestration_output = m g _ a v e r a g e _ f _ d × f e e d s t o c k _ m a s s × m g _ c a t i o n _ f e e d s t o c k _ c o n c e n t r a t i o n × 2.0 M a g n e s i u m c h a r g e × 44.01g/mol C O 2 m o l a r m a s s 24.305g/mol M a g n e s i u m m o l a r m a s s \text{mg\_sequestration\_output} = \frac{mg\_average\_f\_d \times feedstock\_mass \times mg\_cation\_feedstock\_concentration \times \overset{Magnesium\ charge}{\text{2.0}} \times \overset{CO₂\ molar\ mass}{\text{44.01g/mol}}}{\overset{Magnesium\ molar\ mass}{\text{24.305g/mol}}} mg_sequestration_output = 24.305g/mol M a g n es i u m m o l a r ma ss m g _ a v er a g e _ f _ d × f ee d s t oc k _ ma ss × m g _ c a t i o n _ f ee d s t oc k _ co n ce n t r a t i o n × 2.0 M a g n es i u m c ha r g e × 44.01g/mol C O 2 m o l a r ma ss mg_average_f_d = ConservativeMeanBootstrapEstimatorWithOutlierDetection ( m g _ f _ d ) \text{mg\_average\_f\_d} = \text{ConservativeMeanBootstrapEstimatorWithOutlierDetection}(mg\_f\_d) mg_average_f_d = ConservativeMeanBootstrapEstimatorWithOutlierDetection ( m g _ f _ d ) mg_f_d = m g _ c a t i o n _ a d d e d _ f r o m _ f e e d s t o c k + m g _ c a t i o n _ b a s e l i n e _ s o i l _ c o n c e n t r a t i o n − m g _ c a t i o n _ p o s t _ a p p l i c a t i o n _ c o n c e n t r a t i o n − m g _ _ c o n t r o l _ c o r r e c t i o n m g _ c a t i o n _ f e e d s t o c k _ c o n c e n t r a t i o n × t r a c e r _ s o i l _ c o n c e n t r a t i o n _ i n c r e a s e t r a c e r _ f e e d s t o c k _ b a s e l i n e _ d i f f \text{mg\_f\_d} = \frac{mg\_cation\_added\_from\_feedstock + mg\_cation\_baseline\_soil\_concentration - mg\_cation\_post\_application\_concentration - mg\_\_control\_correction}{mg\_cation\_feedstock\_concentration \times \frac{tracer\_soil\_concentration\_increase}{tracer\_feedstock\_baseline\_diff}} mg_f_d = m g _ c a t i o n _ f ee d s t oc k _ co n ce n t r a t i o n × t r a cer _ f ee d s t oc k _ ba se l in e _ d i ff t r a cer _ so i l _ co n ce n t r a t i o n _ in cre a se m g _ c a t i o n _ a dd e d _ f ro m _ f ee d s t oc k + m g _ c a t i o n _ ba se l in e _ so i l _ co n ce n t r a t i o n − m g _ c a t i o n _ p os t _ a ppl i c a t i o n _ co n ce n t r a t i o n − m g __ co n t ro l _ correc t i o n mg_cation_added_from_feedstock = t r a c e r _ s o i l _ c o n c e n t r a t i o n _ i n c r e a s e t r a c e r _ f e e d s t o c k _ b a s e l i n e _ d i f f × ( m g _ c a t i o n _ f e e d s t o c k _ c o n c e n t r a t i o n − m g _ c a t i o n _ b a s e l i n e _ s o i l _ c o n c e n t r a t i o n ) \text{mg\_cation\_added\_from\_feedstock} = \frac{tracer\_soil\_concentration\_increase}{tracer\_feedstock\_baseline\_diff} \times \left(mg\_cation\_feedstock\_concentration - mg\_cation\_baseline\_soil\_concentration\right) mg_cation_added_from_feedstock = t r a cer _ f ee d s t oc k _ ba se l in e _ d i ff t r a cer _ so i l _ co n ce n t r a t i o n _ in cre a se × ( m g _ c a t i o n _ f ee d s t oc k _ co n ce n t r a t i o n − m g _ c a t i o n _ ba se l in e _ so i l _ co n ce n t r a t i o n ) mg__control_correction = m g _ c a t i o n _ b a s e l i n e _ s o i l _ c o n c e n t r a t i o n _ c o n t r o l ‾ − m g _ c a t i o n _ p o s t _ a p p l i c a t i o n _ c o n c e n t r a t i o n _ c o n t r o l ‾ \text{mg\_\_control\_correction} = \overline{mg\_cation\_baseline\_soil\_concentration\_control} - \overline{mg\_cation\_post\_application\_concentration\_control} mg__control_correction = m g _ c a t i o n _ ba se l in e _ so i l _ co n ce n t r a t i o n _ co n t ro l − m g _ c a t i o n _ p os t _ a ppl i c a t i o n _ co n ce n t r a t i o n _ co n t ro l Monitored inputs
Input Key Display Name Quantity Kind Example Unit ca_cation_baseline_soil_concentrationBaseline calcium mass fraction in soil Mass Fraction List mg / kgca_cation_baseline_soil_concentration_controlCalcium mass fraction in control baseline soil Mass Fraction List mg / kgca_cation_feedstock_concentrationCalcium mass fraction in feedstock Mass Fraction mg / kgca_cation_post_application_concentrationCalcium mass fraction in soil at end of reporting period Mass Fraction List mg / kgca_cation_post_application_concentration_controlCalcium mass fraction in control soil at end of reporting period Mass Fraction List mg / kgfeedstock_massMass of feedstock Mass kgmg_cation_baseline_soil_concentrationBaseline magnesium mass fraction in soil Mass Fraction List mg / kgmg_cation_baseline_soil_concentration_controlMagnesium mass fraction in control baseline soil Mass Fraction List mg / kgmg_cation_feedstock_concentrationMagnesium mass fraction in feedstock Mass Fraction mg / kgmg_cation_post_application_concentrationMagnesium mass fraction in soil at end of reporting period Mass Fraction List mg / kgmg_cation_post_application_concentration_controlMagnesium mass fraction in control soil at end of reporting period Mass Fraction List mg / kgocean_retention_factorPercentage of CO₂ retained after losses in ocean storage Percentage %plant_uptake_lossPlant uptake loss Mass Carbon kgCO2eriver_retention_factorPercentage of CO₂ retained after losses in river runoff Percentage %strong_acid_lossStrong acid loss Mass Carbon kgCO2etracer_baseline_soil_concentrationTracer mass fraction in soil before application Mass Fraction List mg / kgtracer_feedstock_concentrationTracer mass fraction in feedstock Mass Fraction mg / kgtracer_post_application_concentrationTracer mass fraction in soil at end of reporting period Mass Fraction List mg / kg
Carbon rich substance sequestration key: carbon_rich_substance_sequestration
Amount of CO₂ stored, given a carbon concentration and mass. Applicable to quantifying CO₂ stored for the protocols Biomass Geological Storage, Bio-oil Geological Storage, Subsurface Biomass Carbon Removal and Storage and Biochar Production and Storage.
Calculations
result = p r o d u c t _ m a s s × c a r b o n _ c o n t e n t × 3.667 C O 2 e q u i v a l e n t o f p u r e c a r b o n \text{result} = product\_mass \times carbon\_content \times \overset{CO₂\ equivalent\ of\ pure\ carbon}{\text{3.667}} result = p ro d u c t _ ma ss × c a r b o n _ co n t e n t × 3.667 C O 2 e q u i v a l e n t o f p u re c a r b o n
Monitored inputs
Input Key Display Name Quantity Kind Example Unit carbon_contentCarbon content of product Dimensionless dimensionlessproduct_massMass of product Mass kg
Carbon rich substance sequestration from mean key: carbon_rich_substance_sequestration_from_mean
Amount of CO₂ stored, given a mass and multiple supplied carbon concentration values, from which a mean is calculated. Applicable to quantifying CO₂ stored for the protocols Biomass Geological Storage, Bio-oil Geological Storage, Subsurface Biomass Carbon Removal and Storage and Biochar Production and Storage.
Calculations
result = p r o d u c t _ m a s s × c a r b o n _ c o n t e n t s ‾ × 3.667 C O 2 e q u i v a l e n t o f p u r e c a r b o n \text{result} = product\_mass \times \overline{carbon\_contents} \times \overset{CO₂\ equivalent\ of\ pure\ carbon}{\text{3.667}} result = p ro d u c t _ ma ss × c a r b o n _ co n t e n t s × 3.667 C O 2 e q u i v a l e n t o f p u re c a r b o n
Monitored inputs
Input Key Display Name Quantity Kind Example Unit carbon_contentsCarbon content of product Dimensionless List dimensionlessproduct_massMass of product Mass kg
Carbon rich substance sequestration with estimate key: carbon_rich_substance_sequestration_with_estimate
Amount of CO₂ stored. The carbon content is calculated from carbon content samples of the same feedstock from different removals. The carbon concentration is then calculated by winsorizing using a three standard deviation limit, then taking the mean and subtracting one standard error to account for sample variability. Applicable to quantifying CO₂ stored for the protocols Biomass Geological Storage, Bio-oil Geological Storage, Subsurface Biomass Carbon Removal and Storage and Biochar Production and Storage.
Calculations
result = p r o d u c t _ m a s s × e s t i m a t e d _ d i s c o u n t e d _ c a r b o n _ c o n t e n t × 3.667 C O 2 e q u i v a l e n t o f p u r e c a r b o n \text{result} = product\_mass \times estimated\_discounted\_carbon\_content \times \overset{CO₂\ equivalent\ of\ pure\ carbon}{\text{3.667}} result = p ro d u c t _ ma ss × es t ima t e d _ d i sco u n t e d _ c a r b o n _ co n t e n t × 3.667 C O 2 e q u i v a l e n t o f p u re c a r b o n
estimated_discounted_carbon_content = WinsorizedMean ( c a r b o n _ c o n t e n t s , c a r b o n _ c o n t e n t s ) − WinsorizedStandardError ( c a r b o n _ c o n t e n t s , c a r b o n _ c o n t e n t s ) \text{estimated\_discounted\_carbon\_content} = \text{WinsorizedMean}(carbon\_contents,\allowbreak carbon\_contents) - \text{WinsorizedStandardError}(carbon\_contents,\allowbreak carbon\_contents) estimated_discounted_carbon_content = WinsorizedMean ( c a r b o n _ co n t e n t s , c a r b o n _ co n t e n t s ) − WinsorizedStandardError ( c a r b o n _ co n t e n t s , c a r b o n _ co n t e n t s ) Monitored inputs
Input Key Display Name Quantity Kind Example Unit carbon_contentsEstimated carbon content of product Dimensionless List dimensionlessproduct_massMass of product Mass kg
Dissolved carbon sequestration key: dissolved_carbon_storage_solid_phase_steady_state
Mass of CO₂ converted to bicarbonate ions in the wastewater stream, determined using direct measurements within the treatment plant and subtracting any potential losses upon effluent discharge. The calculation uses quantification of dissolved feedstock in the solid phase (Option 1 in the WAE protocol), and assumes a steady state of feedstock mass in the control volume.
Calculations
result = c o 2 _ r e m o v e d _ f r o m _ f e e d s t o c k _ d i s s o l u t i o n − c o 2 _ r e l e a s e _ f r o m _ n o n _ c a r b o n i c _ a c i d _ w e a t h e r i n g \text{result} = co2\_removed\_from\_feedstock\_dissolution - co2\_release\_from\_non\_carbonic\_acid\_weathering result = co 2_ re m o v e d _ f ro m _ f ee d s t oc k _ d i sso l u t i o n − co 2_ re l e a se _ f ro m _ n o n _ c a r b o ni c _ a c i d _ w e a t h er in g
co2_removed_from_feedstock_dissolution = m a s s _ o f _ d i s s o l v e d _ f e e d s t o c k _ r p × m o l a r _ m a s s _ r a t i o × u n d i s s o l v e d _ f s _ n o n _ c a r b × m o l a r _ r a t i o _ c a r b o n i c _ w e a t h e r i n g × l o s s e s \text{co2\_removed\_from\_feedstock\_dissolution} = mass\_of\_dissolved\_feedstock\_rp \times molar\_mass\_ratio \times undissolved\_fs\_non\_carb \times molar\_ratio\_carbonic\_weathering \times losses co2_removed_from_feedstock_dissolution = ma ss _ o f _ d i sso l v e d _ f ee d s t oc k _ r p × m o l a r _ ma ss _ r a t i o × u n d i sso l v e d _ f s _ n o n _ c a r b × m o l a r _ r a t i o _ c a r b o ni c _ w e a t h er in g × l osses mass_of_dissolved_feedstock_rp = m a s s _ d o s i n g _ r p − m a s s _ e f f l u e n t _ r p − m a s s _ w a s _ r p \text{mass\_of\_dissolved\_feedstock\_rp} = mass\_dosing\_rp - mass\_effluent\_rp - mass\_was\_rp mass_of_dissolved_feedstock_rp = ma ss _ d os in g _ r p − ma ss _ e ff l u e n t _ r p − ma ss _ w a s _ r p mass_dosing_rp = t o t a l _ f l o w _ d o s i n g × m e a n _ f e e d s t o c k _ c o n c e n t r a t i o n _ d o s i n g \text{mass\_dosing\_rp} = total\_flow\_dosing \times mean\_feedstock\_concentration\_dosing mass_dosing_rp = t o t a l _ f l o w _ d os in g × m e an _ f ee d s t oc k _ co n ce n t r a t i o n _ d os in g mass_effluent_rp = t o t a l _ f l o w _ e f f l u e n t × t s s _ e f f l u e n t × m e a n _ t i c _ e f f l u e n t \text{mass\_effluent\_rp} = total\_flow\_effluent \times tss\_effluent \times mean\_tic\_effluent mass_effluent_rp = t o t a l _ f l o w _ e ff l u e n t × t ss _ e ff l u e n t × m e an _ t i c _ e ff l u e n t mass_was_rp = t o t a l _ f l o w _ w a s × t s s _ w a s × m e a n _ t i c _ w a s \text{mass\_was\_rp} = total\_flow\_was \times tss\_was \times mean\_tic\_was mass_was_rp = t o t a l _ f l o w _ w a s × t ss _ w a s × m e an _ t i c _ w a s molar_mass_ratio = 44.01g/mol C O 2 m o l a r m a s s f e e d s t o c k _ m o l a r _ m a s s \text{molar\_mass\_ratio} = \frac{\overset{CO₂\ molar\ mass}{\text{44.01g/mol}}}{feedstock\_molar\_mass} molar_mass_ratio = f ee d s t oc k _ m o l a r _ ma ss 44.01g/mol C O 2 m o l a r ma ss undissolved_fs_non_carb = 1 − d i s s o l v e d _ f s _ n o n _ c a r b \text{undissolved\_fs\_non\_carb} = 1 - dissolved\_fs\_non\_carb undissolved_fs_non_carb = 1 − d i sso l v e d _ f s _ n o n _ c a r b co2_release_from_non_carbonic_acid_weathering = m a s s _ o f _ d i s s o l v e d _ f e e d s t o c k _ r p × m o l a r _ m a s s _ r a t i o × d i s s o l v e d _ f s _ n o n _ c a r b × m o l a r _ r a t i o _ n o n _ c a r b o n i c _ w e a t h e r i n g \text{co2\_release\_from\_non\_carbonic\_acid\_weathering} = mass\_of\_dissolved\_feedstock\_rp \times molar\_mass\_ratio \times dissolved\_fs\_non\_carb \times molar\_ratio\_non\_carbonic\_weathering co2_release_from_non_carbonic_acid_weathering = ma ss _ o f _ d i sso l v e d _ f ee d s t oc k _ r p × m o l a r _ ma ss _ r a t i o × d i sso l v e d _ f s _ n o n _ c a r b × m o l a r _ r a t i o _ n o n _ c a r b o ni c _ w e a t h er in g Monitored inputs
Input Key Display Name Quantity Kind Example Unit dissolved_fs_non_carbFraction of feedstock dissolved by non-carbonic acid Percentage %feedstock_molar_massFeedstock molar mass Molar Mass g / mollossesLosses of CO₂ due to riverine and oceanic processes Mole Fraction molCO2e / molmean_feedstock_concentration_dosingMean concentration of feedstock in dosing flow Mass Concentration mg / Lmean_tic_effluentMean mass fraction of feedstock in effluent Mass Fraction mg / kgmean_tic_wasMean mass fraction of feedstock in sludge Mass Fraction mg / kgmolar_ratio_carbonic_weatheringMolar ratio of CO₂ to feedstock consumption from carbonic acid weathering Mole Fraction molCO2e / molmolar_ratio_non_carbonic_weatheringMolar ratio of CO₂ release/feedstock consumption from non-carbonic acid weathering Mole Fraction molCO2e / moltotal_flow_dosingTotal flow volume from dosing Volume Ltotal_flow_effluentTotal flow volume of effluent Volume Ltotal_flow_wasTotal flow volume of sludge Volume Ltss_effluentTotal suspended solids of feedstock in effluent Mass Concentration mg / Ltss_wasTotal suspended solids of feedstock in sludge Mass Concentration mg / L
Dissolved carbon sequestration, manual dosing key: dissolved_carbon_storage_manual_dosing
Mass of CO₂ converted to bicarbonate ions in the wastewater stream, determined using direct measurements within the treatment plant and subtracting any potential losses upon effluent discharge. Feedstock is dosed manually and measured as a total mass value.
Calculations
result = c o 2 _ r e m o v e d _ f r o m _ f e e d s t o c k _ d i s s o l u t i o n − c o 2 _ r e l e a s e _ f r o m _ n o n _ c a r b o n i c _ a c i d _ w e a t h e r i n g \text{result} = co2\_removed\_from\_feedstock\_dissolution - co2\_release\_from\_non\_carbonic\_acid\_weathering result = co 2_ re m o v e d _ f ro m _ f ee d s t oc k _ d i sso l u t i o n − co 2_ re l e a se _ f ro m _ n o n _ c a r b o ni c _ a c i d _ w e a t h er in g
co2_removed_from_feedstock_dissolution = m a s s _ o f _ d i s s o l v e d _ f e e d s t o c k _ r p × m o l a r _ m a s s _ r a t i o × u n d i s s o l v e d _ f s _ n o n _ c a r b × m o l a r _ r a t i o _ c a r b o n i c _ w e a t h e r i n g × l o s s e s \text{co2\_removed\_from\_feedstock\_dissolution} = mass\_of\_dissolved\_feedstock\_rp \times molar\_mass\_ratio \times undissolved\_fs\_non\_carb \times molar\_ratio\_carbonic\_weathering \times losses co2_removed_from_feedstock_dissolution = ma ss _ o f _ d i sso l v e d _ f ee d s t oc k _ r p × m o l a r _ ma ss _ r a t i o × u n d i sso l v e d _ f s _ n o n _ c a r b × m o l a r _ r a t i o _ c a r b o ni c _ w e a t h er in g × l osses mass_of_dissolved_feedstock_rp = m a s s _ d o s i n g _ r p − m a s s _ e f f l u e n t _ r p − m a s s _ w a s _ r p \text{mass\_of\_dissolved\_feedstock\_rp} = mass\_dosing\_rp - mass\_effluent\_rp - mass\_was\_rp mass_of_dissolved_feedstock_rp = ma ss _ d os in g _ r p − ma ss _ e ff l u e n t _ r p − ma ss _ w a s _ r p mass_effluent_rp = t o t a l _ f l o w _ e f f l u e n t × t s s _ e f f l u e n t × m e a n _ t i c _ e f f l u e n t \text{mass\_effluent\_rp} = total\_flow\_effluent \times tss\_effluent \times mean\_tic\_effluent mass_effluent_rp = t o t a l _ f l o w _ e ff l u e n t × t ss _ e ff l u e n t × m e an _ t i c _ e ff l u e n t mass_was_rp = t o t a l _ f l o w _ w a s × t s s _ w a s × m e a n _ t i c _ w a s \text{mass\_was\_rp} = total\_flow\_was \times tss\_was \times mean\_tic\_was mass_was_rp = t o t a l _ f l o w _ w a s × t ss _ w a s × m e an _ t i c _ w a s molar_mass_ratio = 44.01g/mol C O 2 m o l a r m a s s f e e d s t o c k _ m o l a r _ m a s s \text{molar\_mass\_ratio} = \frac{\overset{CO₂\ molar\ mass}{\text{44.01g/mol}}}{feedstock\_molar\_mass} molar_mass_ratio = f ee d s t oc k _ m o l a r _ ma ss 44.01g/mol C O 2 m o l a r ma ss undissolved_fs_non_carb = 1 − d i s s o l v e d _ f s _ n o n _ c a r b \text{undissolved\_fs\_non\_carb} = 1 - dissolved\_fs\_non\_carb undissolved_fs_non_carb = 1 − d i sso l v e d _ f s _ n o n _ c a r b co2_release_from_non_carbonic_acid_weathering = m a s s _ o f _ d i s s o l v e d _ f e e d s t o c k _ r p × m o l a r _ m a s s _ r a t i o × d i s s o l v e d _ f s _ n o n _ c a r b × m o l a r _ r a t i o _ n o n _ c a r b o n i c _ w e a t h e r i n g \text{co2\_release\_from\_non\_carbonic\_acid\_weathering} = mass\_of\_dissolved\_feedstock\_rp \times molar\_mass\_ratio \times dissolved\_fs\_non\_carb \times molar\_ratio\_non\_carbonic\_weathering co2_release_from_non_carbonic_acid_weathering = ma ss _ o f _ d i sso l v e d _ f ee d s t oc k _ r p × m o l a r _ ma ss _ r a t i o × d i sso l v e d _ f s _ n o n _ c a r b × m o l a r _ r a t i o _ n o n _ c a r b o ni c _ w e a t h er in g Monitored inputs
Input Key Display Name Quantity Kind Example Unit dissolved_fs_non_carbFraction of feedstock dissolved by non-carbonic acid Percentage %feedstock_molar_massFeedstock molar mass Molar Mass g / mollossesLosses of CO₂ due to riverine and oceanic processes Mole Fraction molCO2e / molmass_dosing_rpTotal dosing mass of feedstock Mass kgmean_tic_effluentMean mass fraction of feedstock in effluent Mass Fraction mg / kgmean_tic_wasMean mass fraction of feedstock in sludge Mass Fraction mg / kgmolar_ratio_carbonic_weatheringMolar ratio of CO₂ to feedstock consumption from carbonic acid weathering Mole Fraction molCO2e / molmolar_ratio_non_carbonic_weatheringMolar ratio of CO₂ release/feedstock consumption from non-carbonic acid weathering Mole Fraction molCO2e / moltotal_flow_effluentTotal flow volume of effluent Volume Ltotal_flow_wasTotal flow volume of sludge Volume Ltss_effluentTotal suspended solids of feedstock in effluent Mass Concentration mg / Ltss_wasTotal suspended solids of feedstock in sludge Mass Concentration mg / L
key: dissolved_carbon_storage_mass_inputs
Mass of CO₂ converted to bicarbonate ions in the wastewater stream, determined using direct measurements within the treatment plant and subtracting any potential losses upon effluent discharge. Feedstock measurements for dosing and waste streams provided as mass inputs.
Calculations
result = c o 2 _ r e m o v e d _ f r o m _ f e e d s t o c k _ d i s s o l u t i o n − c o 2 _ r e l e a s e _ f r o m _ n o n _ c a r b o n i c _ a c i d _ w e a t h e r i n g \text{result} = co2\_removed\_from\_feedstock\_dissolution - co2\_release\_from\_non\_carbonic\_acid\_weathering result = co 2_ re m o v e d _ f ro m _ f ee d s t oc k _ d i sso l u t i o n − co 2_ re l e a se _ f ro m _ n o n _ c a r b o ni c _ a c i d _ w e a t h er in g
co2_removed_from_feedstock_dissolution = m a s s _ o f _ d i s s o l v e d _ f e e d s t o c k _ r p × m o l a r _ m a s s _ r a t i o × u n d i s s o l v e d _ f s _ n o n _ c a r b × m o l a r _ r a t i o _ c a r b o n i c _ w e a t h e r i n g × l o s s e s \text{co2\_removed\_from\_feedstock\_dissolution} = mass\_of\_dissolved\_feedstock\_rp \times molar\_mass\_ratio \times undissolved\_fs\_non\_carb \times molar\_ratio\_carbonic\_weathering \times losses co2_removed_from_feedstock_dissolution = ma ss _ o f _ d i sso l v e d _ f ee d s t oc k _ r p × m o l a r _ ma ss _ r a t i o × u n d i sso l v e d _ f s _ n o n _ c a r b × m o l a r _ r a t i o _ c a r b o ni c _ w e a t h er in g × l osses mass_of_dissolved_feedstock_rp = m a s s _ d o s i n g _ r p − m a s s _ e f f l u e n t _ r p − m a s s _ w a s _ r p \text{mass\_of\_dissolved\_feedstock\_rp} = mass\_dosing\_rp - mass\_effluent\_rp - mass\_was\_rp mass_of_dissolved_feedstock_rp = ma ss _ d os in g _ r p − ma ss _ e ff l u e n t _ r p − ma ss _ w a s _ r p molar_mass_ratio = 44.01g/mol C O 2 m o l a r m a s s f e e d s t o c k _ m o l a r _ m a s s \text{molar\_mass\_ratio} = \frac{\overset{CO₂\ molar\ mass}{\text{44.01g/mol}}}{feedstock\_molar\_mass} molar_mass_ratio = f ee d s t oc k _ m o l a r _ ma ss 44.01g/mol C O 2 m o l a r ma ss undissolved_fs_non_carb = 1 − d i s s o l v e d _ f s _ n o n _ c a r b \text{undissolved\_fs\_non\_carb} = 1 - dissolved\_fs\_non\_carb undissolved_fs_non_carb = 1 − d i sso l v e d _ f s _ n o n _ c a r b co2_release_from_non_carbonic_acid_weathering = m a s s _ o f _ d i s s o l v e d _ f e e d s t o c k _ r p × m o l a r _ m a s s _ r a t i o × d i s s o l v e d _ f s _ n o n _ c a r b × m o l a r _ r a t i o _ n o n _ c a r b o n i c _ w e a t h e r i n g \text{co2\_release\_from\_non\_carbonic\_acid\_weathering} = mass\_of\_dissolved\_feedstock\_rp \times molar\_mass\_ratio \times dissolved\_fs\_non\_carb \times molar\_ratio\_non\_carbonic\_weathering co2_release_from_non_carbonic_acid_weathering = ma ss _ o f _ d i sso l v e d _ f ee d s t oc k _ r p × m o l a r _ ma ss _ r a t i o × d i sso l v e d _ f s _ n o n _ c a r b × m o l a r _ r a t i o _ n o n _ c a r b o ni c _ w e a t h er in g Monitored inputs
Input Key Display Name Quantity Kind Example Unit dissolved_fs_non_carbFraction of feedstock dissolved by non-carbonic acid Percentage %feedstock_molar_massFeedstock molar mass Molar Mass g / mollossesLosses of CO₂ due to riverine and oceanic processes Mole Fraction molCO2e / molmass_dosing_rpTotal dosing mass of feedstock Mass kgmass_effluent_rpTotal flow mass of feedstock in effluent stream Mass kgmass_was_rpTotal flow mass of feedstock in sludge Mass kgmolar_ratio_carbonic_weatheringMolar ratio of CO₂ to feedstock consumption from carbonic acid weathering Mole Fraction molCO2e / molmolar_ratio_non_carbonic_weatheringMolar ratio of CO₂ release/feedstock consumption from non-carbonic acid weathering Mole Fraction molCO2e / mol
Enhanced weathering - immobile element tracer method key: iemt_2025_04
CO₂ removed from weathering using the immobile element method described in Reershemius et al 2023, using an immobile tracer. Accounts for losses from strong acids, plant uptake, and river and ocean networks. Can accept multiple feedstock measurements for each element, and the mean will be used.
Calculations
result = ExpectedValue ( c o 2 _ s e q u e s t e r e d × s t r o n g _ a c i d _ r e t e n t i o n _ f a c t o r × p l a n t _ r e t e n t i o n _ f a c t o r × r i v e r _ r e t e n t i o n _ f a c t o r × o c e a n _ r e t e n t i o n _ f a c t o r ) \text{result} = \text{ExpectedValue}(co2\_sequestered \times strong\_acid\_retention\_factor \times plant\_retention\_factor \times river\_retention\_factor \times ocean\_retention\_factor) result = ExpectedValue ( co 2_ se q u es t ere d × s t ro n g _ a c i d _ re t e n t i o n _ f a c t or × pl an t _ re t e n t i o n _ f a c t or × r i v er _ re t e n t i o n _ f a c t or × oce an _ re t e n t i o n _ f a c t or )
co2_sequestered = c a _ c o 2 _ r e m o v e d + m g _ c o 2 _ r e m o v e d \text{co2\_sequestered} = ca\_co2\_removed + mg\_co2\_removed co2_sequestered = c a _ co 2_ re m o v e d + m g _ co 2_ re m o v e d ca_co2_removed = f e e d s t o c k _ m a s s × c a _ f e e d s t o c k _ m a s s _ f r a c t i o n ‾ × c o n s e r v a t i v e _ m e a n _ c a _ w e a t h e r e d _ f r a c t i o n 40.078g/mol C a l c i u m m o l a r m a s s × 44.01g/mol C O 2 m o l a r m a s s × 2.0 C a l c i u m c h a r g e \text{ca\_co2\_removed} = \frac{feedstock\_mass \times \overline{ca\_feedstock\_mass\_fraction} \times conservative\_mean\_ca\_weathered\_fraction}{\overset{Calcium\ molar\ mass}{\text{40.078g/mol}}} \times \overset{CO₂\ molar\ mass}{\text{44.01g/mol}} \times \overset{Calcium\ charge}{\text{2.0}} ca_co2_removed = 40.078g/mol C a l c i u m m o l a r ma ss f ee d s t oc k _ ma ss × c a _ f ee d s t oc k _ ma ss _ f r a c t i o n × co n ser v a t i v e _ m e an _ c a _ w e a t h ere d _ f r a c t i o n × 44.01g/mol C O 2 m o l a r ma ss × 2.0 C a l c i u m c ha r g e conservative_mean_ca_weathered_fraction = ConservativeMeanBootstrapEstimator ( o u t l i e r _ d e t e c t i o n _ c a _ w e a t h e r e d _ f r a c t i o n ) \text{conservative\_mean\_ca\_weathered\_fraction} = \text{ConservativeMeanBootstrapEstimator}(outlier\_detection\_ca\_weathered\_fraction) conservative_mean_ca_weathered_fraction = ConservativeMeanBootstrapEstimator ( o u tl i er _ d e t ec t i o n _ c a _ w e a t h ere d _ f r a c t i o n ) outlier_detection_ca_weathered_fraction = ModifiedZScoreOutlierDetection ( c a _ w e a t h e r e d _ f r a c t i o n ) \text{outlier\_detection\_ca\_weathered\_fraction} = \text{ModifiedZScoreOutlierDetection}(ca\_weathered\_fraction) outlier_detection_ca_weathered_fraction = ModifiedZScoreOutlierDetection ( c a _ w e a t h ere d _ f r a c t i o n ) ca_weathered_fraction = DivideAndFilterZeroDenominator ( c a _ l o s t , t r a c e r _ s o i l _ m a s s _ f r a c t i o n _ i n c r e a s e t r a c e r _ f e e d s t o c k _ b a s e l i n e _ d i f f × c a _ f e e d s t o c k _ m a s s _ f r a c t i o n _ s u r p l u s ) \text{ca\_weathered\_fraction} = \text{DivideAndFilterZeroDenominator}(ca\_lost,\allowbreak \frac{tracer\_soil\_mass\_fraction\_increase}{tracer\_feedstock\_baseline\_diff} \times ca\_feedstock\_mass\_fraction\_surplus) ca_weathered_fraction = DivideAndFilterZeroDenominator ( c a _ l os t , t r a cer _ f ee d s t oc k _ ba se l in e _ d i ff t r a cer _ so i l _ ma ss _ f r a c t i o n _ in cre a se × c a _ f ee d s t oc k _ ma ss _ f r a c t i o n _ s u r pl u s ) ca_lost = t r a c e r _ s o i l _ m a s s _ f r a c t i o n _ i n c r e a s e t r a c e r _ f e e d s t o c k _ b a s e l i n e _ d i f f × c a _ f e e d s t o c k _ m a s s _ f r a c t i o n _ s u r p l u s + c a _ b a s e l i n e _ s o i l _ m a s s _ f r a c t i o n − c a _ e n d _ s o i l _ m a s s _ f r a c t i o n − c a _ s o i l _ m a s s _ f r a c t i o n _ c o n t r o l _ c o r r e c t i o n \text{ca\_lost} = \frac{tracer\_soil\_mass\_fraction\_increase}{tracer\_feedstock\_baseline\_diff} \times ca\_feedstock\_mass\_fraction\_surplus + ca\_baseline\_soil\_mass\_fraction - ca\_end\_soil\_mass\_fraction - ca\_soil\_mass\_fraction\_control\_correction ca_lost = t r a cer _ f ee d s t oc k _ ba se l in e _ d i ff t r a cer _ so i l _ ma ss _ f r a c t i o n _ in cre a se × c a _ f ee d s t oc k _ ma ss _ f r a c t i o n _ s u r pl u s + c a _ ba se l in e _ so i l _ ma ss _ f r a c t i o n − c a _ e n d _ so i l _ ma ss _ f r a c t i o n − c a _ so i l _ ma ss _ f r a c t i o n _ co n t ro l _ correc t i o n tracer_soil_mass_fraction_increase = t r a c e r _ e n d _ s o i l _ m a s s _ f r a c t i o n − t r a c e r _ b a s e l i n e _ s o i l _ m a s s _ f r a c t i o n \text{tracer\_soil\_mass\_fraction\_increase} = tracer\_end\_soil\_mass\_fraction - tracer\_baseline\_soil\_mass\_fraction tracer_soil_mass_fraction_increase = t r a cer _ e n d _ so i l _ ma ss _ f r a c t i o n − t r a cer _ ba se l in e _ so i l _ ma ss _ f r a c t i o n tracer_feedstock_baseline_diff = t r a c e r _ f e e d s t o c k _ m a s s _ f r a c t i o n ‾ − t r a c e r _ b a s e l i n e _ s o i l _ m a s s _ f r a c t i o n \text{tracer\_feedstock\_baseline\_diff} = \overline{tracer\_feedstock\_mass\_fraction} - tracer\_baseline\_soil\_mass\_fraction tracer_feedstock_baseline_diff = t r a cer _ f ee d s t oc k _ ma ss _ f r a c t i o n − t r a cer _ ba se l in e _ so i l _ ma ss _ f r a c t i o n ca_feedstock_mass_fraction_surplus = c a _ f e e d s t o c k _ m a s s _ f r a c t i o n ‾ − c a _ b a s e l i n e _ s o i l _ m a s s _ f r a c t i o n \text{ca\_feedstock\_mass\_fraction\_surplus} = \overline{ca\_feedstock\_mass\_fraction} - ca\_baseline\_soil\_mass\_fraction ca_feedstock_mass_fraction_surplus = c a _ f ee d s t oc k _ ma ss _ f r a c t i o n − c a _ ba se l in e _ so i l _ ma ss _ f r a c t i o n ca_soil_mass_fraction_control_correction = c a _ b a s e l i n e _ s o i l _ m a s s _ f r a c t i o n _ c o n t r o l ‾ − c a _ e n d _ s o i l _ m a s s _ f r a c t i o n _ c o n t r o l ‾ \text{ca\_soil\_mass\_fraction\_control\_correction} = \overline{ca\_baseline\_soil\_mass\_fraction\_control} - \overline{ca\_end\_soil\_mass\_fraction\_control} ca_soil_mass_fraction_control_correction = c a _ ba se l in e _ so i l _ ma ss _ f r a c t i o n _ co n t ro l − c a _ e n d _ so i l _ ma ss _ f r a c t i o n _ co n t ro l mg_co2_removed = f e e d s t o c k _ m a s s × m g _ f e e d s t o c k _ m a s s _ f r a c t i o n ‾ × c o n s e r v a t i v e _ m e a n _ m g _ w e a t h e r e d _ f r a c t i o n 24.305g/mol M a g n e s i u m m o l a r m a s s × 44.01g/mol C O 2 m o l a r m a s s × 2.0 M a g n e s i u m c h a r g e \text{mg\_co2\_removed} = \frac{feedstock\_mass \times \overline{mg\_feedstock\_mass\_fraction} \times conservative\_mean\_mg\_weathered\_fraction}{\overset{Magnesium\ molar\ mass}{\text{24.305g/mol}}} \times \overset{CO₂\ molar\ mass}{\text{44.01g/mol}} \times \overset{Magnesium\ charge}{\text{2.0}} mg_co2_removed = 24.305g/mol M a g n es i u m m o l a r ma ss f ee d s t oc k _ ma ss × m g _ f ee d s t oc k _ ma ss _ f r a c t i o n × co n ser v a t i v e _ m e an _ m g _ w e a t h ere d _ f r a c t i o n × 44.01g/mol C O 2 m o l a r ma ss × 2.0 M a g n es i u m c ha r g e conservative_mean_mg_weathered_fraction = ConservativeMeanBootstrapEstimator ( o u t l i e r _ d e t e c t i o n _ m g _ w e a t h e r e d _ f r a c t i o n ) \text{conservative\_mean\_mg\_weathered\_fraction} = \text{ConservativeMeanBootstrapEstimator}(outlier\_detection\_mg\_weathered\_fraction) conservative_mean_mg_weathered_fraction = ConservativeMeanBootstrapEstimator ( o u tl i er _ d e t ec t i o n _ m g _ w e a t h ere d _ f r a c t i o n ) outlier_detection_mg_weathered_fraction = ModifiedZScoreOutlierDetection ( m g _ w e a t h e r e d _ f r a c t i o n ) \text{outlier\_detection\_mg\_weathered\_fraction} = \text{ModifiedZScoreOutlierDetection}(mg\_weathered\_fraction) outlier_detection_mg_weathered_fraction = ModifiedZScoreOutlierDetection ( m g _ w e a t h ere d _ f r a c t i o n ) mg_weathered_fraction = DivideAndFilterZeroDenominator ( m g _ l o s t , t r a c e r _ s o i l _ m a s s _ f r a c t i o n _ i n c r e a s e t r a c e r _ f e e d s t o c k _ b a s e l i n e _ d i f f × m g _ f e e d s t o c k _ m a s s _ f r a c t i o n _ s u r p l u s ) \text{mg\_weathered\_fraction} = \text{DivideAndFilterZeroDenominator}(mg\_lost,\allowbreak \frac{tracer\_soil\_mass\_fraction\_increase}{tracer\_feedstock\_baseline\_diff} \times mg\_feedstock\_mass\_fraction\_surplus) mg_weathered_fraction = DivideAndFilterZeroDenominator ( m g _ l os t , t r a cer _ f ee d s t oc k _ ba se l in e _ d i ff t r a cer _ so i l _ ma ss _ f r a c t i o n _ in cre a se × m g _ f ee d s t oc k _ ma ss _ f r a c t i o n _ s u r pl u s ) mg_lost = t r a c e r _ s o i l _ m a s s _ f r a c t i o n _ i n c r e a s e t r a c e r _ f e e d s t o c k _ b a s e l i n e _ d i f f × m g _ f e e d s t o c k _ m a s s _ f r a c t i o n _ s u r p l u s + m g _ b a s e l i n e _ s o i l _ m a s s _ f r a c t i o n − m g _ e n d _ s o i l _ m a s s _ f r a c t i o n − m g _ s o i l _ m a s s _ f r a c t i o n _ c o n t r o l _ c o r r e c t i o n \text{mg\_lost} = \frac{tracer\_soil\_mass\_fraction\_increase}{tracer\_feedstock\_baseline\_diff} \times mg\_feedstock\_mass\_fraction\_surplus + mg\_baseline\_soil\_mass\_fraction - mg\_end\_soil\_mass\_fraction - mg\_soil\_mass\_fraction\_control\_correction mg_lost = t r a cer _ f ee d s t oc k _ ba se l in e _ d i ff t r a cer _ so i l _ ma ss _ f r a c t i o n _ in cre a se × m g _ f ee d s t oc k _ ma ss _ f r a c t i o n _ s u r pl u s + m g _ ba se l in e _ so i l _ ma ss _ f r a c t i o n − m g _ e n d _ so i l _ ma ss _ f r a c t i o n − m g _ so i l _ ma ss _ f r a c t i o n _ co n t ro l _ correc t i o n mg_feedstock_mass_fraction_surplus = m g _ f e e d s t o c k _ m a s s _ f r a c t i o n ‾ − m g _ b a s e l i n e _ s o i l _ m a s s _ f r a c t i o n \text{mg\_feedstock\_mass\_fraction\_surplus} = \overline{mg\_feedstock\_mass\_fraction} - mg\_baseline\_soil\_mass\_fraction mg_feedstock_mass_fraction_surplus = m g _ f ee d s t oc k _ ma ss _ f r a c t i o n − m g _ ba se l in e _ so i l _ ma ss _ f r a c t i o n mg_soil_mass_fraction_control_correction = m g _ b a s e l i n e _ s o i l _ m a s s _ f r a c t i o n _ c o n t r o l ‾ − m g _ e n d _ s o i l _ m a s s _ f r a c t i o n _ c o n t r o l ‾ \text{mg\_soil\_mass\_fraction\_control\_correction} = \overline{mg\_baseline\_soil\_mass\_fraction\_control} - \overline{mg\_end\_soil\_mass\_fraction\_control} mg_soil_mass_fraction_control_correction = m g _ ba se l in e _ so i l _ ma ss _ f r a c t i o n _ co n t ro l − m g _ e n d _ so i l _ ma ss _ f r a c t i o n _ co n t ro l Monitored inputs
Input Key Display Name Quantity Kind Example Unit ca_baseline_soil_mass_fractionBaseline calcium mass fraction in soil Mass Fraction List mg / kgca_baseline_soil_mass_fraction_controlCalcium mass fraction in control baseline soil Mass Fraction List mg / kgca_end_soil_mass_fractionCalcium mass fraction in soil at end of reporting period Mass Fraction List mg / kgca_end_soil_mass_fraction_controlCalcium mass fraction in control soil at end of reporting period Mass Fraction List mg / kgca_feedstock_mass_fractionCalcium mass fraction in feedstock Mass Fraction List mg / kgfeedstock_massMass of feedstock Mass kgmg_baseline_soil_mass_fractionBaseline magnesium mass fraction in soil Mass Fraction List mg / kgmg_baseline_soil_mass_fraction_controlMagnesium mass fraction in control baseline soil Mass Fraction List mg / kgmg_end_soil_mass_fractionMagnesium mass fraction in soil at end of reporting period Mass Fraction List mg / kgmg_end_soil_mass_fraction_controlMagnesium mass fraction in control soil at end of reporting period Mass Fraction List mg / kgmg_feedstock_mass_fractionMagnesium mass fraction in feedstock Mass Fraction List mg / kgocean_retention_factorOcean re-equilibration - percentage of CDR retained after losses Percentage %plant_retention_factorPlant uptake - percentage of CDR retained after losses Percentage %river_retention_factorRiver runoff - percentage of CDR retained after losses Percentage %strong_acid_retention_factorStrong acid weathering - percentage of CDR retained after losses Percentage %tracer_baseline_soil_mass_fractionTracer mass fraction in soil before application Mass Fraction List mg / kgtracer_end_soil_mass_fractionTracer mass fraction in soil at end of reporting period Mass Fraction List mg / kgtracer_feedstock_mass_fractionTracer mass fraction in feedstock Mass Fraction List mg / kg
Enhanced weathering - immobile element tracer method with losses (february 2025) key: iemt_with_losses_2025_02
CO₂ removed from weathering using the immobile element method described in Reershemius et al 2023, using Titanium as the tracer and assuming that the dissolved fraction of all cations is equal to that of Calcium. Accounts for losses from strong acids, plant uptake, and river and ocean networks. There is no explicit correction for data obtained from control plots.
Calculations
result = ExpectedValue ( c o 2 _ s e q u e s t e r e d × s t r o n g _ a c i d _ r e t e n t i o n _ f a c t o r × p l a n t _ r e t e n t i o n _ f a c t o r × r i v e r _ r e t e n t i o n _ f a c t o r × o c e a n _ r e t e n t i o n _ f a c t o r ) \text{result} = \text{ExpectedValue}(co2\_sequestered \times strong\_acid\_retention\_factor \times plant\_retention\_factor \times river\_retention\_factor \times ocean\_retention\_factor) result = ExpectedValue ( co 2_ se q u es t ere d × s t ro n g _ a c i d _ re t e n t i o n _ f a c t or × pl an t _ re t e n t i o n _ f a c t or × r i v er _ re t e n t i o n _ f a c t or × oce an _ re t e n t i o n _ f a c t or )
co2_sequestered = f e e d s t o c k _ m a s s × c a _ w e a t h e r e d _ f r a c t i o n _ c o n s e r v a t i v e × c d r _ p o t e n t i a l \text{co2\_sequestered} = feedstock\_mass \times ca\_weathered\_fraction\_conservative \times cdr\_potential co2_sequestered = f ee d s t oc k _ ma ss × c a _ w e a t h ere d _ f r a c t i o n _ co n ser v a t i v e × c d r _ p o t e n t ia l ca_weathered_fraction_conservative = ExpectedValueMinusStddev ( c a _ w e a t h e r e d _ f r a c t i o n ) \text{ca\_weathered\_fraction\_conservative} = \text{ExpectedValueMinusStddev}(ca\_weathered\_fraction) ca_weathered_fraction_conservative = ExpectedValueMinusStddev ( c a _ w e a t h ere d _ f r a c t i o n ) ca_weathered_fraction = DivideAndFilterZeroDenominator ( c a _ l o s t , t i _ s o i l _ m a s s _ f r a c t i o n _ i n c r e a s e t i _ f e e d s t o c k _ b a s e l i n e _ d i f f × c a _ f e e d s t o c k _ m a s s _ f r a c t i o n _ s u r p l u s ) \text{ca\_weathered\_fraction} = \text{DivideAndFilterZeroDenominator}(ca\_lost,\allowbreak \frac{ti\_soil\_mass\_fraction\_increase}{ti\_feedstock\_baseline\_diff} \times ca\_feedstock\_mass\_fraction\_surplus) ca_weathered_fraction = DivideAndFilterZeroDenominator ( c a _ l os t , t i _ f ee d s t oc k _ ba se l in e _ d i ff t i _ so i l _ ma ss _ f r a c t i o n _ in cre a se × c a _ f ee d s t oc k _ ma ss _ f r a c t i o n _ s u r pl u s ) ca_lost = t i _ s o i l _ m a s s _ f r a c t i o n _ i n c r e a s e t i _ f e e d s t o c k _ b a s e l i n e _ d i f f × c a _ f e e d s t o c k _ m a s s _ f r a c t i o n _ s u r p l u s + c a _ b a s e l i n e _ s o i l _ m a s s _ f r a c t i o n − c a _ e n d _ s o i l _ m a s s _ f r a c t i o n \text{ca\_lost} = \frac{ti\_soil\_mass\_fraction\_increase}{ti\_feedstock\_baseline\_diff} \times ca\_feedstock\_mass\_fraction\_surplus + ca\_baseline\_soil\_mass\_fraction - ca\_end\_soil\_mass\_fraction ca_lost = t i _ f ee d s t oc k _ ba se l in e _ d i ff t i _ so i l _ ma ss _ f r a c t i o n _ in cre a se × c a _ f ee d s t oc k _ ma ss _ f r a c t i o n _ s u r pl u s + c a _ ba se l in e _ so i l _ ma ss _ f r a c t i o n − c a _ e n d _ so i l _ ma ss _ f r a c t i o n ti_soil_mass_fraction_increase = t i _ e n d _ s o i l _ m a s s _ f r a c t i o n − t i _ b a s e l i n e _ s o i l _ m a s s _ f r a c t i o n \text{ti\_soil\_mass\_fraction\_increase} = ti\_end\_soil\_mass\_fraction - ti\_baseline\_soil\_mass\_fraction ti_soil_mass_fraction_increase = t i _ e n d _ so i l _ ma ss _ f r a c t i o n − t i _ ba se l in e _ so i l _ ma ss _ f r a c t i o n ti_feedstock_baseline_diff = t i _ f e e d s t o c k _ m a s s _ f r a c t i o n − t i _ b a s e l i n e _ s o i l _ m a s s _ f r a c t i o n \text{ti\_feedstock\_baseline\_diff} = ti\_feedstock\_mass\_fraction - ti\_baseline\_soil\_mass\_fraction ti_feedstock_baseline_diff = t i _ f ee d s t oc k _ ma ss _ f r a c t i o n − t i _ ba se l in e _ so i l _ ma ss _ f r a c t i o n ca_feedstock_mass_fraction_surplus = c a _ f e e d s t o c k _ m a s s _ f r a c t i o n − c a _ b a s e l i n e _ s o i l _ m a s s _ f r a c t i o n \text{ca\_feedstock\_mass\_fraction\_surplus} = ca\_feedstock\_mass\_fraction - ca\_baseline\_soil\_mass\_fraction ca_feedstock_mass_fraction_surplus = c a _ f ee d s t oc k _ ma ss _ f r a c t i o n − c a _ ba se l in e _ so i l _ ma ss _ f r a c t i o n Monitored inputs
Input Key Display Name Quantity Kind Example Unit ca_baseline_soil_mass_fractionBaseline calcium mass fraction in soil Mass Fraction mg / kgca_end_soil_mass_fractionCalcium mass fraction in soil at end of reporting period Mass Fraction mg / kgca_feedstock_mass_fractionCalcium mass fraction in feedstock Mass Fraction mg / kgcdr_potentialCDR potential of entire feedstock (Ca, Mg, Na & K cations) Mass Cdr Potential kgCO2e / tonnefeedstock_massMass of feedstock Mass kgocean_retention_factorPercentage of CDR retained after losses in ocean storage Percentage %plant_retention_factorPercentage of CDR retained after losses due to plant uptake Percentage %river_retention_factorPercentage of CDR retained after losses in river runoff Percentage %strong_acid_retention_factorPercentage of CDR retained after losses due to strong acid reactions Percentage %ti_baseline_soil_mass_fractionTitanium mass fraction in soil before application Mass Fraction mg / kgti_end_soil_mass_fractionTitanium mass fraction in soil at end of reporting period Mass Fraction mg / kgti_feedstock_mass_fractionTitanium mass fraction in feedstock Mass Fraction mg / kg
Ocean carbon storage via river export key: ocean_carbon_storage_river_export
CO₂ sequestered via increased drawdown in rivers and reduced outgassing, resulting in CO₂ ocean storage as dissolved inorganic carbon (DIC). The calculation uses quantification outlined in the River Alkalinity Enhancement protocol.
Calculations
result = c o 2 e _ n e t _ e x p o r t − c o 2 e _ f e e d s t o c k \text{result} = co2e\_net\_export - co2e\_feedstock result = co 2 e _ n e t _ e x p or t − co 2 e _ f ee d s t oc k
co2e_net_export = 3.667 C O 2 e q u i v a l e n t o f p u r e c a r b o n × r i v e r _ d i c _ e x p o r t × o c e a n _ r e t e n t i o n \text{co2e\_net\_export} = \overset{CO₂\ equivalent\ of\ pure\ carbon}{\text{3.667}} \times river\_dic\_export \times ocean\_retention co2e_net_export = 3.667 C O 2 e q u i v a l e n t o f p u re c a r b o n × r i v er _ d i c _ e x p or t × oce an _ re t e n t i o n river_dic_export = ∑ d i c _ d o w n s t r e a m _ t × r i v e r _ r e t e n t i o n × 12.011g/mol M o l a r m a s s o f c a r b o n \text{river\_dic\_export} = \sum dic\_downstream\_t \times river\_retention \times \overset{Molar\ mass\ of\ carbon}{\text{12.011g/mol}} river_dic_export = ∑ d i c _ d o w n s t re am _ t × r i v er _ re t e n t i o n × 12.011g/mol M o l a r ma ss o f c a r b o n dic_downstream_t = d i c _ c o n c e n t r a t i o n _ t × d e n s i t y _ d o w n s t r e a m _ t × f l o w _ d o w n s t r e a m _ t × t i m e _ i n t e r v a l _ t \text{dic\_downstream\_t} = dic\_concentration\_t \times density\_downstream\_t \times flow\_downstream\_t \times time\_interval\_t dic_downstream_t = d i c _ co n ce n t r a t i o n _ t × d e n s i t y _ d o w n s t re am _ t × f l o w _ d o w n s t re am _ t × t im e _ in t er v a l _ t co2e_feedstock = 3.667 C O 2 e q u i v a l e n t o f p u r e c a r b o n × f e e d s t o c k _ c a r b o n _ c o n t e n t \text{co2e\_feedstock} = \overset{CO₂\ equivalent\ of\ pure\ carbon}{\text{3.667}} \times feedstock\_carbon\_content co2e_feedstock = 3.667 C O 2 e q u i v a l e n t o f p u re c a r b o n × f ee d s t oc k _ c a r b o n _ co n t e n t feedstock_carbon_content = f e e d s t o c k _ m a s s × f e e d s t o c k _ c a r b o n _ f r a c t i o n \text{feedstock\_carbon\_content} = feedstock\_mass \times feedstock\_carbon\_fraction feedstock_carbon_content = f ee d s t oc k _ ma ss × f ee d s t oc k _ c a r b o n _ f r a c t i o n Monitored inputs
Input Key Display Name Quantity Kind Example Unit density_downstream_tAverage density at downstream measurement location Mass Density List kg / m^3dic_concentration_tAverage DIC concentration at downstream measurement location Amount Of Substance Per Mass List mmol / kgfeedstock_carbon_fractionCarbon mass fraction in feedstock Mass Fraction mg / kgfeedstock_massMass of alkaline feedstock added Mass kgflow_downstream_tAverage flow rate at downstream measurement location Volume Flow Rate List m^3 / hourocean_retentionRetention of CO₂ after re-equilibration of DIC on ocean discharge Dimensionless dimensionlessriver_retentionRetention of CO₂ after transit from downstream measurement point to the river mouth Dimensionless dimensionlesstime_interval_tDuration of time interval Time List second
key: off_platform_sequestration
Constant sequestration representing a calculation that is done outside of the Isometric system. This blueprint should be used for testing sequestration values before we can represent them with a more detailed blueprint, and not for ‘production’ removal data.
Calculations
result = o f f _ p l a t f o r m _ s e q u e s t r a t i o n \text{result} = off\_platform\_sequestration result = o ff _ pl a t f or m _ se q u es t r a t i o n
Monitored inputs
Input Key Display Name Quantity Kind Example Unit off_platform_sequestrationOff-platform sequestration Mass Carbon kgCO2e
Total plant uptake loss key: ew_plant_uptake_from_sample
Calculates the plant uptake from a sample of locations
Calculations
result = ( c o _ l o s t _ p e r _ u n i t _ a r e a _ f r o m _ c a l c i u m + c o _ l o s t _ p e r _ u n i t _ a r e a _ f r o m _ m a g n e s i u m ) × r o c k _ s p r e a d _ a r e a \text{result} = \left(co\_lost\_per\_unit\_area\_from\_calcium + co\_lost\_per\_unit\_area\_from\_magnesium\right) \times rock\_spread\_area result = ( co _ l os t _ p er _ u ni t _ a re a _ f ro m _ c a l c i u m + co _ l os t _ p er _ u ni t _ a re a _ f ro m _ ma g n es i u m ) × roc k _ s p re a d _ a re a
co_lost_per_unit_area_from_calcium = c a t i o n s _ l o s t _ d u e _ t o _ p l a n t _ u p t a k e _ o f _ c a l c i u m × 2.0 C a l c i u m c h a r g e × 44.01g/mol C O 2 m o l a r m a s s 40.078g/mol C a l c i u m m o l a r m a s s \text{co\_lost\_per\_unit\_area\_from\_calcium} = cations\_lost\_due\_to\_plant\_uptake\_of\_calcium \times \overset{Calcium\ charge}{\text{2.0}} \times \frac{\overset{CO₂\ molar\ mass}{\text{44.01g/mol}}}{\overset{Calcium\ molar\ mass}{\text{40.078g/mol}}} co_lost_per_unit_area_from_calcium = c a t i o n s _ l os t _ d u e _ t o _ pl an t _ u pt ak e _ o f _ c a l c i u m × 2.0 C a l c i u m c ha r g e × 40.078g/mol C a l c i u m m o l a r ma ss 44.01g/mol C O 2 m o l a r ma ss cations_lost_due_to_plant_uptake_of_calcium = d e p l o y m e n t _ c a _ c o n c e n t r a t i o n ‾ × ∑ d e p l o y m e n t _ t o t a l _ y i e l d ∑ d e p l o y m e n t _ t o t a l _ a r e a − c o n t r o l _ c a _ c o n c e n t r a t i o n ‾ × c o u n t e r f a c t u a l _ y i e l d \text{cations\_lost\_due\_to\_plant\_uptake\_of\_calcium} = \overline{deployment\_ca\_concentration} \times \frac{\sum deployment\_total\_yield}{\sum deployment\_total\_area} - \overline{control\_ca\_concentration} \times counterfactual\_yield cations_lost_due_to_plant_uptake_of_calcium = d e pl oy m e n t _ c a _ co n ce n t r a t i o n × ∑ d e pl oy m e n t _ t o t a l _ a re a ∑ d e pl oy m e n t _ t o t a l _ y i e l d − co n t ro l _ c a _ co n ce n t r a t i o n × co u n t er f a c t u a l _ y i e l d counterfactual_yield = y i e l d _ r a t i o × ∑ d e p l o y m e n t _ t o t a l _ y i e l d ∑ d e p l o y m e n t _ t o t a l _ a r e a \text{counterfactual\_yield} = yield\_ratio \times \frac{\sum deployment\_total\_yield}{\sum deployment\_total\_area} counterfactual_yield = y i e l d _ r a t i o × ∑ d e pl oy m e n t _ t o t a l _ a re a ∑ d e pl oy m e n t _ t o t a l _ y i e l d yield_ratio = ∑ c o n t r o l _ s a m p l e _ y i e l d ∑ c o n t r o l _ s a m p l e _ a r e a ∑ d e p l o y m e n t _ s a m p l e _ y i e l d ∑ d e p l o y m e n t _ s a m p l e _ a r e a \text{yield\_ratio} = \frac{\frac{\sum control\_sample\_yield}{\sum control\_sample\_area}}{\frac{\sum deployment\_sample\_yield}{\sum deployment\_sample\_area}} yield_ratio = ∑ d e pl oy m e n t _ s am pl e _ a re a ∑ d e pl oy m e n t _ s am pl e _ y i e l d ∑ co n t ro l _ s am pl e _ a re a ∑ co n t ro l _ s am pl e _ y i e l d co_lost_per_unit_area_from_magnesium = c a t i o n s _ l o s t _ d u e _ t o _ p l a n t _ u p t a k e _ o f _ m a g n e s i u m × 2.0 M a g n e s i u m c h a r g e × 44.01g/mol C O 2 m o l a r m a s s 24.305g/mol M a g n e s i u m m o l a r m a s s \text{co\_lost\_per\_unit\_area\_from\_magnesium} = cations\_lost\_due\_to\_plant\_uptake\_of\_magnesium \times \overset{Magnesium\ charge}{\text{2.0}} \times \frac{\overset{CO₂\ molar\ mass}{\text{44.01g/mol}}}{\overset{Magnesium\ molar\ mass}{\text{24.305g/mol}}} co_lost_per_unit_area_from_magnesium = c a t i o n s _ l os t _ d u e _ t o _ pl an t _ u pt ak e _ o f _ ma g n es i u m × 2.0 M a g n es i u m c ha r g e × 24.305g/mol M a g n es i u m m o l a r ma ss 44.01g/mol C O 2 m o l a r ma ss cations_lost_due_to_plant_uptake_of_magnesium = d e p l o y m e n t _ m g _ c o n c e n t r a t i o n ‾ × ∑ d e p l o y m e n t _ t o t a l _ y i e l d ∑ d e p l o y m e n t _ t o t a l _ a r e a − c o n t r o l _ m g _ c o n c e n t r a t i o n ‾ × c o u n t e r f a c t u a l _ y i e l d \text{cations\_lost\_due\_to\_plant\_uptake\_of\_magnesium} = \overline{deployment\_mg\_concentration} \times \frac{\sum deployment\_total\_yield}{\sum deployment\_total\_area} - \overline{control\_mg\_concentration} \times counterfactual\_yield cations_lost_due_to_plant_uptake_of_magnesium = d e pl oy m e n t _ m g _ co n ce n t r a t i o n × ∑ d e pl oy m e n t _ t o t a l _ a re a ∑ d e pl oy m e n t _ t o t a l _ y i e l d − co n t ro l _ m g _ co n ce n t r a t i o n × co u n t er f a c t u a l _ y i e l d Monitored inputs
Input Key Display Name Quantity Kind Example Unit control_ca_concentrationCalcium concentration in control Mass Fraction List mg / kgcontrol_mg_concentrationMagnesium concentration in control Mass Fraction List mg / kgcontrol_sample_areaControl sample area Area List hacontrol_sample_yieldControl sample yield Mass List kgdeployment_ca_concentrationCalcium concentration in deployment Mass Fraction List mg / kgdeployment_mg_concentrationMagnesium concentration in deployment Mass Fraction List mg / kgdeployment_sample_areaDeployment sample area Area List hadeployment_sample_yieldDeployment sample yield Mass List kgdeployment_total_areaDeployment total area Area List hadeployment_total_yieldDeployment total yield Mass List kgrock_spread_areaRock spread area Area ha
Two plot, unpaired single immobile tracer element key: iemt_2025_04_two_plot_ca_mg_non_paired_single_tracer
CO₂ removed from weathering using the immobile element method described in Reershemius et al 2023, using an immobile tracer. Accounts for losses from strong acids, plant uptake, and river and ocean networks. Can accept multiple feedstock measurements for each element, and the mean will be used. Will also accept multiple soil measurements and take the average of the baseline and end of reporting period measurements for each element before performing the TiCAT calculation. This method allows us to use data where soil measurements are not taken at the same location in baseline and end of reporting period.
Calculations
result = ExpectedValue ( c o 2 _ s e q u e s t e r e d × s t r o n g _ a c i d _ r e t e n t i o n _ f a c t o r × p l a n t _ r e t e n t i o n _ f a c t o r × r i v e r _ r e t e n t i o n _ f a c t o r × o c e a n _ r e t e n t i o n _ f a c t o r ) \text{result} = \text{ExpectedValue}(co2\_sequestered \times strong\_acid\_retention\_factor \times plant\_retention\_factor \times river\_retention\_factor \times ocean\_retention\_factor) result = ExpectedValue ( co 2_ se q u es t ere d × s t ro n g _ a c i d _ re t e n t i o n _ f a c t or × pl an t _ re t e n t i o n _ f a c t or × r i v er _ re t e n t i o n _ f a c t or × oce an _ re t e n t i o n _ f a c t or )
co2_sequestered = c a _ c o 2 _ r e m o v e d + m g _ c o 2 _ r e m o v e d \text{co2\_sequestered} = ca\_co2\_removed + mg\_co2\_removed co2_sequestered = c a _ co 2_ re m o v e d + m g _ co 2_ re m o v e d ca_co2_removed = f e e d s t o c k _ m a s s × c a _ f e e d s t o c k _ m a s s _ f r a c t i o n ‾ × c a _ w e a t h e r e d _ f r a c t i o n _ m e a n 40.078g/mol C a l c i u m m o l a r m a s s × 44.01g/mol C O 2 m o l a r m a s s × 2.0 C a l c i u m c h a r g e \text{ca\_co2\_removed} = \frac{feedstock\_mass \times \overline{ca\_feedstock\_mass\_fraction} \times ca\_weathered\_fraction\_mean}{\overset{Calcium\ molar\ mass}{\text{40.078g/mol}}} \times \overset{CO₂\ molar\ mass}{\text{44.01g/mol}} \times \overset{Calcium\ charge}{\text{2.0}} ca_co2_removed = 40.078g/mol C a l c i u m m o l a r ma ss f ee d s t oc k _ ma ss × c a _ f ee d s t oc k _ ma ss _ f r a c t i o n × c a _ w e a t h ere d _ f r a c t i o n _ m e an × 44.01g/mol C O 2 m o l a r ma ss × 2.0 C a l c i u m c ha r g e ca_weathered_fraction_mean = ExpectedValueMinusStddev ( c a _ w e a t h e r e d _ f r a c t i o n ) \text{ca\_weathered\_fraction\_mean} = \text{ExpectedValueMinusStddev}(ca\_weathered\_fraction) ca_weathered_fraction_mean = ExpectedValueMinusStddev ( c a _ w e a t h ere d _ f r a c t i o n ) ca_weathered_fraction = DivideAndFilterZeroDenominator ( c a _ l o s t , t r a c e r _ s o i l _ m a s s _ f r a c t i o n _ i n c r e a s e t r a c e r _ f e e d s t o c k _ b a s e l i n e _ d i f f × c a _ f e e d s t o c k _ m a s s _ f r a c t i o n _ s u r p l u s ) \text{ca\_weathered\_fraction} = \text{DivideAndFilterZeroDenominator}(ca\_lost,\allowbreak \frac{tracer\_soil\_mass\_fraction\_increase}{tracer\_feedstock\_baseline\_diff} \times ca\_feedstock\_mass\_fraction\_surplus) ca_weathered_fraction = DivideAndFilterZeroDenominator ( c a _ l os t , t r a cer _ f ee d s t oc k _ ba se l in e _ d i ff t r a cer _ so i l _ ma ss _ f r a c t i o n _ in cre a se × c a _ f ee d s t oc k _ ma ss _ f r a c t i o n _ s u r pl u s ) ca_lost = t r a c e r _ s o i l _ m a s s _ f r a c t i o n _ i n c r e a s e t r a c e r _ f e e d s t o c k _ b a s e l i n e _ d i f f × c a _ f e e d s t o c k _ m a s s _ f r a c t i o n _ s u r p l u s + c a _ b a s e l i n e _ s o i l _ m a s s _ f r a c t i o n ‾ − c a _ e n d _ s o i l _ m a s s _ f r a c t i o n ‾ − c a _ s o i l _ m a s s _ f r a c t i o n _ c o n t r o l _ c o r r e c t i o n \text{ca\_lost} = \frac{tracer\_soil\_mass\_fraction\_increase}{tracer\_feedstock\_baseline\_diff} \times ca\_feedstock\_mass\_fraction\_surplus + \overline{ca\_baseline\_soil\_mass\_fraction} - \overline{ca\_end\_soil\_mass\_fraction} - ca\_soil\_mass\_fraction\_control\_correction ca_lost = t r a cer _ f ee d s t oc k _ ba se l in e _ d i ff t r a cer _ so i l _ ma ss _ f r a c t i o n _ in cre a se × c a _ f ee d s t oc k _ ma ss _ f r a c t i o n _ s u r pl u s + c a _ ba se l in e _ so i l _ ma ss _ f r a c t i o n − c a _ e n d _ so i l _ ma ss _ f r a c t i o n − c a _ so i l _ ma ss _ f r a c t i o n _ co n t ro l _ correc t i o n tracer_soil_mass_fraction_increase = t r a c e r _ e n d _ s o i l _ m a s s _ f r a c t i o n ‾ − t r a c e r _ b a s e l i n e _ s o i l _ m a s s _ f r a c t i o n ‾ \text{tracer\_soil\_mass\_fraction\_increase} = \overline{tracer\_end\_soil\_mass\_fraction} - \overline{tracer\_baseline\_soil\_mass\_fraction} tracer_soil_mass_fraction_increase = t r a cer _ e n d _ so i l _ ma ss _ f r a c t i o n − t r a cer _ ba se l in e _ so i l _ ma ss _ f r a c t i o n tracer_feedstock_baseline_diff = t r a c e r _ f e e d s t o c k _ m a s s _ f r a c t i o n ‾ − t r a c e r _ b a s e l i n e _ s o i l _ m a s s _ f r a c t i o n ‾ \text{tracer\_feedstock\_baseline\_diff} = \overline{tracer\_feedstock\_mass\_fraction} - \overline{tracer\_baseline\_soil\_mass\_fraction} tracer_feedstock_baseline_diff = t r a cer _ f ee d s t oc k _ ma ss _ f r a c t i o n − t r a cer _ ba se l in e _ so i l _ ma ss _ f r a c t i o n ca_feedstock_mass_fraction_surplus = c a _ f e e d s t o c k _ m a s s _ f r a c t i o n ‾ − c a _ b a s e l i n e _ s o i l _ m a s s _ f r a c t i o n ‾ \text{ca\_feedstock\_mass\_fraction\_surplus} = \overline{ca\_feedstock\_mass\_fraction} - \overline{ca\_baseline\_soil\_mass\_fraction} ca_feedstock_mass_fraction_surplus = c a _ f ee d s t oc k _ ma ss _ f r a c t i o n − c a _ ba se l in e _ so i l _ ma ss _ f r a c t i o n ca_soil_mass_fraction_control_correction = c a _ b a s e l i n e _ s o i l _ m a s s _ f r a c t i o n _ c o n t r o l ‾ − c a _ e n d _ s o i l _ m a s s _ f r a c t i o n _ c o n t r o l ‾ \text{ca\_soil\_mass\_fraction\_control\_correction} = \overline{ca\_baseline\_soil\_mass\_fraction\_control} - \overline{ca\_end\_soil\_mass\_fraction\_control} ca_soil_mass_fraction_control_correction = c a _ ba se l in e _ so i l _ ma ss _ f r a c t i o n _ co n t ro l − c a _ e n d _ so i l _ ma ss _ f r a c t i o n _ co n t ro l mg_co2_removed = f e e d s t o c k _ m a s s × m g _ f e e d s t o c k _ m a s s _ f r a c t i o n ‾ × m g _ w e a t h e r e d _ f r a c t i o n _ m e a n 24.305g/mol M a g n e s i u m m o l a r m a s s × 44.01g/mol C O 2 m o l a r m a s s × 2.0 M a g n e s i u m c h a r g e \text{mg\_co2\_removed} = \frac{feedstock\_mass \times \overline{mg\_feedstock\_mass\_fraction} \times mg\_weathered\_fraction\_mean}{\overset{Magnesium\ molar\ mass}{\text{24.305g/mol}}} \times \overset{CO₂\ molar\ mass}{\text{44.01g/mol}} \times \overset{Magnesium\ charge}{\text{2.0}} mg_co2_removed = 24.305g/mol M a g n es i u m m o l a r ma ss f ee d s t oc k _ ma ss × m g _ f ee d s t oc k _ ma ss _ f r a c t i o n × m g _ w e a t h ere d _ f r a c t i o n _ m e an × 44.01g/mol C O 2 m o l a r ma ss × 2.0 M a g n es i u m c ha r g e mg_weathered_fraction_mean = ExpectedValueMinusStddev ( m g _ w e a t h e r e d _ f r a c t i o n ) \text{mg\_weathered\_fraction\_mean} = \text{ExpectedValueMinusStddev}(mg\_weathered\_fraction) mg_weathered_fraction_mean = ExpectedValueMinusStddev ( m g _ w e a t h ere d _ f r a c t i o n ) mg_weathered_fraction = DivideAndFilterZeroDenominator ( m g _ l o s t , t r a c e r _ s o i l _ m a s s _ f r a c t i o n _ i n c r e a s e t r a c e r _ f e e d s t o c k _ b a s e l i n e _ d i f f × m g _ f e e d s t o c k _ m a s s _ f r a c t i o n _ s u r p l u s ) \text{mg\_weathered\_fraction} = \text{DivideAndFilterZeroDenominator}(mg\_lost,\allowbreak \frac{tracer\_soil\_mass\_fraction\_increase}{tracer\_feedstock\_baseline\_diff} \times mg\_feedstock\_mass\_fraction\_surplus) mg_weathered_fraction = DivideAndFilterZeroDenominator ( m g _ l os t , t r a cer _ f ee d s t oc k _ ba se l in e _ d i ff t r a cer _ so i l _ ma ss _ f r a c t i o n _ in cre a se × m g _ f ee d s t oc k _ ma ss _ f r a c t i o n _ s u r pl u s ) mg_lost = t r a c e r _ s o i l _ m a s s _ f r a c t i o n _ i n c r e a s e t r a c e r _ f e e d s t o c k _ b a s e l i n e _ d i f f × m g _ f e e d s t o c k _ m a s s _ f r a c t i o n _ s u r p l u s + m g _ b a s e l i n e _ s o i l _ m a s s _ f r a c t i o n ‾ − m g _ e n d _ s o i l _ m a s s _ f r a c t i o n ‾ − m g _ s o i l _ m a s s _ f r a c t i o n _ c o n t r o l _ c o r r e c t i o n \text{mg\_lost} = \frac{tracer\_soil\_mass\_fraction\_increase}{tracer\_feedstock\_baseline\_diff} \times mg\_feedstock\_mass\_fraction\_surplus + \overline{mg\_baseline\_soil\_mass\_fraction} - \overline{mg\_end\_soil\_mass\_fraction} - mg\_soil\_mass\_fraction\_control\_correction mg_lost = t r a cer _ f ee d s t oc k _ ba se l in e _ d i ff t r a cer _ so i l _ ma ss _ f r a c t i o n _ in cre a se × m g _ f ee d s t oc k _ ma ss _ f r a c t i o n _ s u r pl u s + m g _ ba se l in e _ so i l _ ma ss _ f r a c t i o n − m g _ e n d _ so i l _ ma ss _ f r a c t i o n − m g _ so i l _ ma ss _ f r a c t i o n _ co n t ro l _ correc t i o n mg_feedstock_mass_fraction_surplus = m g _ f e e d s t o c k _ m a s s _ f r a c t i o n ‾ − m g _ b a s e l i n e _ s o i l _ m a s s _ f r a c t i o n ‾ \text{mg\_feedstock\_mass\_fraction\_surplus} = \overline{mg\_feedstock\_mass\_fraction} - \overline{mg\_baseline\_soil\_mass\_fraction} mg_feedstock_mass_fraction_surplus = m g _ f ee d s t oc k _ ma ss _ f r a c t i o n − m g _ ba se l in e _ so i l _ ma ss _ f r a c t i o n mg_soil_mass_fraction_control_correction = m g _ b a s e l i n e _ s o i l _ m a s s _ f r a c t i o n _ c o n t r o l ‾ − m g _ e n d _ s o i l _ m a s s _ f r a c t i o n _ c o n t r o l ‾ \text{mg\_soil\_mass\_fraction\_control\_correction} = \overline{mg\_baseline\_soil\_mass\_fraction\_control} - \overline{mg\_end\_soil\_mass\_fraction\_control} mg_soil_mass_fraction_control_correction = m g _ ba se l in e _ so i l _ ma ss _ f r a c t i o n _ co n t ro l − m g _ e n d _ so i l _ ma ss _ f r a c t i o n _ co n t ro l Monitored inputs
Input Key Display Name Quantity Kind Example Unit ca_baseline_soil_mass_fractionBaseline calcium mass fraction in soil Mass Fraction List mg / kgca_baseline_soil_mass_fraction_controlCalcium mass fraction in control baseline soil Mass Fraction List mg / kgca_end_soil_mass_fractionCalcium mass fraction in soil at end of reporting period Mass Fraction List mg / kgca_end_soil_mass_fraction_controlCalcium mass fraction in control soil at end of reporting period Mass Fraction List mg / kgca_feedstock_mass_fractionCalcium mass fraction in feedstock Mass Fraction List mg / kgfeedstock_massMass of feedstock Mass kgmg_baseline_soil_mass_fractionBaseline magnesium mass fraction in soil Mass Fraction List mg / kgmg_baseline_soil_mass_fraction_controlMagnesium mass fraction in control baseline soil Mass Fraction List mg / kgmg_end_soil_mass_fractionMagnesium mass fraction in soil at end of reporting period Mass Fraction List mg / kgmg_end_soil_mass_fraction_controlMagnesium mass fraction in control soil at end of reporting period Mass Fraction List mg / kgmg_feedstock_mass_fractionMagnesium mass fraction in feedstock Mass Fraction List mg / kgocean_retention_factorOcean re-equilibration - percentage of CDR retained after losses Percentage %plant_retention_factorPlant uptake - percentage of CDR retained after losses Percentage %river_retention_factorRiver runoff - percentage of CDR retained after losses Percentage %strong_acid_retention_factorStrong acid weathering - percentage of CDR retained after losses Percentage %tracer_baseline_soil_mass_fractionTracer mass fraction in soil before application Mass Fraction List mg / kgtracer_end_soil_mass_fractionTracer mass fraction in soil at end of reporting period Mass Fraction List mg / kgtracer_feedstock_mass_fractionTracer mass fraction in feedstock Mass Fraction List mg / kg
Woody biomass sequestration key: woody_biomass_sequestration
CO₂e stored in a reforestation project in aboveground and belowground woody biomass, determined by the difference in CO₂e stored between the start and end of the reporting period.
Calculations
result = c o 2 e _ s t o r e d _ t 2 − c o 2 e _ s t o r e d _ t 1 \text{result} = co2e\_stored\_t2 - co2e\_stored\_t1 result = co 2 e _ s t ore d _ t 2 − co 2 e _ s t ore d _ t 1
co2e_stored_t2 = c o 2 e _ a g b _ t 2 + c o 2 e _ b g b _ t 2 \text{co2e\_stored\_t2} = co2e\_agb\_t2 + co2e\_bgb\_t2 co2e_stored_t2 = co 2 e _ a g b _ t 2 + co 2 e _ b g b _ t 2 co2e_agb_t2 = 3.667 C O 2 e q u i v a l e n t o f p u r e c a r b o n × m e a n _ c a r b o n _ f r a c t i o n × m a s s _ a g b _ t 2 \text{co2e\_agb\_t2} = \overset{CO₂\ equivalent\ of\ pure\ carbon}{\text{3.667}} \times mean\_carbon\_fraction \times mass\_agb\_t2 co2e_agb_t2 = 3.667 C O 2 e q u i v a l e n t o f p u re c a r b o n × m e an _ c a r b o n _ f r a c t i o n × ma ss _ a g b _ t 2 co2e_bgb_t2 = r o o t _ s h o o t _ r a t i o × c o 2 e _ a g b _ t 2 \text{co2e\_bgb\_t2} = root\_shoot\_ratio \times co2e\_agb\_t2 co2e_bgb_t2 = roo t _ s h oo t _ r a t i o × co 2 e _ a g b _ t 2 co2e_stored_t1 = c o 2 e _ a g b _ t 1 + c o 2 e _ b g b _ t 1 \text{co2e\_stored\_t1} = co2e\_agb\_t1 + co2e\_bgb\_t1 co2e_stored_t1 = co 2 e _ a g b _ t 1 + co 2 e _ b g b _ t 1 co2e_agb_t1 = 3.667 C O 2 e q u i v a l e n t o f p u r e c a r b o n × m e a n _ c a r b o n _ f r a c t i o n × m a s s _ a g b _ t 1 \text{co2e\_agb\_t1} = \overset{CO₂\ equivalent\ of\ pure\ carbon}{\text{3.667}} \times mean\_carbon\_fraction \times mass\_agb\_t1 co2e_agb_t1 = 3.667 C O 2 e q u i v a l e n t o f p u re c a r b o n × m e an _ c a r b o n _ f r a c t i o n × ma ss _ a g b _ t 1 co2e_bgb_t1 = r o o t _ s h o o t _ r a t i o × c o 2 e _ a g b _ t 1 \text{co2e\_bgb\_t1} = root\_shoot\_ratio \times co2e\_agb\_t1 co2e_bgb_t1 = roo t _ s h oo t _ r a t i o × co 2 e _ a g b _ t 1 Monitored inputs
Input Key Display Name Quantity Kind Example Unit mass_agb_t1Total aboveground biomass, start of reporting period Mass kgmass_agb_t2Total aboveground biomass, end of reporting period Mass kgmean_carbon_fractionMean carbon fraction Dimensionless dimensionlessroot_shoot_ratioRoot to shoot ratio Dimensionless dimensionless
Uncertainty_Discount Component Blueprints Constant CO₂ uncertainty discount key: constant_uncertainty_discount
CO₂e discounted as a result of an off-platform calculation of input uncertainty, such as Monte Carlo simulations. This component should only be used if not using the in-built variance propagation method of uncertainty discounting.
Calculations
result = c o n s t a n t _ u n c e r t a i n t y _ d i s c o u n t \text{result} = constant\_uncertainty\_discount result = co n s t an t _ u n cer t ain t y _ d i sco u n t
Monitored inputs
Input Key Display Name Quantity Kind Example Unit constant_uncertainty_discountConstant CO₂ uncertainty discount Mass Carbon kgCO2e
