"\"toa\" means top of atmosphere. \"Shortwave\" means shortwave radiation. Cloud radiative effect is also commonly known as \"cloud radiative forcing\". It is the difference in radiative flux resulting from the presence of clouds, i.e. the difference between toa_net_downward_shortwave_flux and toa_net_downward_shortwave_flux_assuming_clear_sky." . "Climate and Forecast (CF)" . . "toa shortwave cloud radiative effect" . . . .