But clouds still have a "warming" effect for the land underneath. Hence deserts with clear skies can freeze at night.
Let's compare cloudy Dublin..
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With clear sky Dubai..
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The clear sky allows the sun to warm Dubai more during the day, but also let's the temp drop 10degC at night, compared to Dublins 3degC drop.
10degC rise in 1 day! If we "model" that for a year, the temp will have risen 3,650degC by 2025!
It doesn't, why not? sun goes up, sun goes down, planet goes around and around.
Sun + Planet + rotation + Clouds + Water Vapour = We don't all freeze at -15degC average.
Isn't it great to have our self-regulating planetary climate?