I migrated and recalculated my project data from Fieldprint Platform Version 4 to Version 5. Why are my GHG Emission estimates in Version 5 different or higher compared to the results from Fieldprint Platform Version 4?
Fieldprint Platform Version 5 represents a significant upgrade from Version 4, with the revision of three indicators at its center: Energy Use, GHG Emissions, and Soil Carbon.
The following methodologies were revised in Version 5:
- Irrigation operations
- Field operations
- Manure transportation
- Crop transportation
- Crop drying
- CH4 emissions from flooded rice cultivation
- Non-CO2 emissions from biomass burning
- Soil N2O
The following methodologies were added in Version 5:
- CH4 flux from non-flooded soils
- CO2 from carbonate lime applications to soils
- CO2 from urea fertilizer applications
- Direct land use change
- Soil carbon stock changes
Any of the above revisions or additions could have impacted your indicator scores. From our internal preliminary analyses, the methodologies with the highest potential to impact your results include:
- Irrigation operations: Irrigation pumps powered by diesel can expect a doubling or tripling of GHG emissions associated with water pumping.
- Soil N2O: The latest method from USDA estimates higher soil N2O emissions compared to the method from Version 4.
- Soil organic carbon fluxes: This method is an addition and may result in GHG emissions or sequestrations.
- Direct land use change: If a given field experienced land use change (e.g., pine forest to row crops), a significant amount of GHG emissions are added for the next 20 years.