This fold contains the DNDC model, model input files, and all data used in the paper "Improving a Biogeochemical Model to Simulate Surface Energy, Greenhouse Gas Fluxes, and Radiative Forcing for Different Land Use Types in Northeastern United States". The data (Data.xlsx) include simulated and observed daily outgoing shortwave radiation, albedo, latent heat, sensible heat, and NEE at the forest, hayfield, and cornfield during the period from 2014 to 2016. The data (Data.xlsx) also include simulated long-term trends of outgoing shortwave radiation, net CO2 flux, CH4 uptake, and N2O emission at the forest, hayfield, and cornfield, and difference of simulated annual radiative forcing between forest and hayfield (hayfield minus forest) and forest and cornfield (cornfield minus forest).