The model subtracts the FARM CO2 emissions from DICE's land use emission category to avoid double counting (i.e. so we don't add endogenous FARM emissions and the full exogenous DICE land use emissions time series). Should just double-check that this is the proper place to subtract them from (other options are industrial CO2 emissions, or they could be folded into the exogenous radiative forcing series).
Also need to figure out units. DICE says CO2 emissions, land use (GTC per year, 2010), but directly adds them to industrial emissions without any conversions (which are in GtCO2). Most likely a typo and all units are GtCO2, but should confirm.
The model subtracts the FARM CO2 emissions from DICE's land use emission category to avoid double counting (i.e. so we don't add endogenous FARM emissions and the full exogenous DICE land use emissions time series). Should just double-check that this is the proper place to subtract them from (other options are industrial CO2 emissions, or they could be folded into the exogenous radiative forcing series).
Also need to figure out units. DICE says
CO2 emissions, land use (GTC per year, 2010), but directly adds them to industrial emissions without any conversions (which are in GtCO2). Most likely a typo and all units are GtCO2, but should confirm.