Half Up, Half Down

Looking at the rainfall effect on climate sensitivity calculation, in the early post, we can see if half the energy of condension to rainfall goes up and half goes downwards, the energy emitted to spaces, is on 40.05 W/m^2, and so entering into our formule, the temperature increase due to doubling CO2 from 400ppvm to 800ppvm is 0.39 Degree (K or C).