The Sun has a lot to say about future climate, but we are not listening. Long-term changes in solar activity are cyclical, and what adds to warming now will subtract from it in the future.
The earth's climate is anything but regular, with every year a repeat of the last. The White Earth Effect is the realization of what would happen if the earth
The atmosphere is less a heat engine than a collection of many self-running refrigerators/dehumidifiers operating in different ways to carry heat largely from surface to tropopause locally and the balance from equator to poles. An important, but perhaps underappreciated, effect of dehumidification is to make the atmosphere broadly more amenable to cooling by LWIR.