In my lifetime, the hottest days I have enjoyed were in Jeddah (55°C), Adelaide (47°C), and Death Valley (46°C). For some strange reason, these were in summer in a dry climate.
The atmosphere is a natural air conditioner that modulates air temperature by the evaporation and precipitation of water. The adiabatic heat of the evaporation of water shows that to vaporise water, energy must be taken from the air, soil, plants, lakes, rivers, and seas.
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