The category /transport/lgv/generic/ghgp/heavyduty/us/biomassfuel contains data sourced from the World Resources Institute GHG_Protocol for calculating emissions associated with heavy duty biofuel trucks in the US. This allows users to calculate their biofuel CO2 emissions separately from the fossil fuel CO2, N2O and CH4 emissions in the US heavy duty truck category.
To use this category, specify the vehicle type using the vehicleType drill-down, from ''rigid'' or ''articulated''. Then use the fuelType drill-down to select the type of fuel being used. At present the only option for biomass fuels in this category is 'ethanol'.
The distance is then set as a profile item by the user.
The algorithm returns the kg CO2 for the distance entered. This CO2 value covers biomass emissions only. CH4 and N2O emissions are included in the US heavy duty truck category. If the user wishes to calculate complete emissions, including biomass and fossil CO2 emissions (as well as CH4 and N2O emissions), both categories should be used.