The emphasis the IPCC places on global average surface temperature and the use of the phrase "Global warming" suggests that atmospheric and oceanic circulation of thermal energy are not important in discussions of global climate change.
Theodore Shepherd argues that global climate is driven by thermodynamics, and only regional climate is driven by convection and atmospheric circulation.
He also admits that climate models are much less consistent in their predictions of precipitation than temperature, and that the difference is likely due to atmospheric circulation, which affects precipitation patterns more than temperature.
Convection and circulation largely control the residence time of the energy within the climate system.
In summary, discussing annual or monthly global average surface temperature as if it represents global climate change is very misleading.
Over half the time in Earth's recent history the global average temperature was between 19 and 20°C. The current climate is unusual in Earth's history, but it is unusually cold, not unusually hot.
Atmospheric circulation and convection do play a role in global climate change since they affect the speed and efficiency of meridional heat transport, which helps determine the equator-to-pole temperature gradient and the residence time of thermal energy in the climate system.
https://wattsupwiththat.com/2024/03/06/climate-model-bias-4-convection-and-atmospheric-circulation/
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