Effective Radiative Forcing (w.r.t. SST from 1850) E2.2 for yr 2000 and 2014 historical forcings and 2x/4xCO2 Year ERF (W/m2) (+/- 0.08 W/m2) Year All_forcings WMGHG Ozone trop_aerosol_dir trop_aerosol_total BC_snow Land_use Irrigation Solar Volcanic Orbital 2xCO2 4xCO2 2000 1.79 2.38 0.27 -0.36 -1.19 -0.06 -0.04 0.00 0.05 0.09 -0.06 3.63 7.13 2014 2.08 2.81 0.39 -0.41 -1.31 -0.05 -0.11 -0.11 0.00 0.03 -0.04 NA NA