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Table 2 General characteristics of the biophysical process models EPIC and BETHY/DLR.

From: How sensitive are estimates of carbon fixation in agricultural models to input data?

Abbreviation Biosphere Energy Transfer Hydrology Model Environmental Policy Integrated Climate
References [4, 12] [7, 22, 23]
Model type SVAT model crop model
Time step Daily Up to < 1 day
Main simulation processes GPP, NPP, NEP, evapotranspiration, soil water content plant and crop growth, heat and water balance, wind and water erosion, nutrient cycling
General formulation to compute NPP NPP = GPP - autotrophic respiration NPP = (yield+straw+roots)- (water content+non carbon fraction)