[polotics]

Well with more CO2 you have more convection, the higher atmosphere is actually cooling because of the nice CO2 blanket that keeps heat trapped lower. (Which by the way prooves that it's not the sun's natural variability that's the cause, otherwise the higher atmosphere would also get warmer) This temperature differential between low and high atmosphere then means more convection, more evaporation, more movement of air and water. Look just read up on this ok, it's not that hard.