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[–] 14 points 8 months ago (3 children)

I thought they were just condensation?

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  • [–] 5 points 8 months ago (1 child)

    They are, but clouds disproportionately reflect IR. Basically the energy comes in as a mix of high, medium and low energy light. The earth re-radiates as low energy IR. Clouds trap this keeping the warmth (and energy) in.

    Clouds and CO2 act in a similar way.

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