Now what if that was the situation initially soon after this GHG impulse and the majority of air (except for the ocean boundary layer), having a far lower heat capacity than water, rapidly warmed to its new equilibrium temperature? (joannenova.com.au)
Since surface (and lower troposphere) temperature is determined by both radiation and convection, it doesn't make sense to add 1 W / m2 of downward radiative forcing at the surface to the existing 168 W / m2 of downward SWR and 324 w / m2 of downward LWR and calculate a new equilibrium temperature surface temperature. (judithcurry.com)