why are deserts freezing at night?
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There’s no humidity (moisture in the air) to trap heat. The water molecules in the air maintain heat longer than the gaseous air, because of different evaporation points. Less water in the air means less heat held in from the day time.
Cloud cover is one of the things that helps an area retain the heat from the day. Deserts don’t tend to get much cloud cover. Also sand is pretty reflective and doesn’t absorb much heat so it cools off pretty quickly once the sun sets.
I don’t know if you mean literally freezing or just seems freezing, but in the latter case a lot has to do in in the large change in temp from others explanation. I was in the Mid East and temps went into the 70-80s some nights and we all wore jackets because we were climatized for 105-110 temps during the day and a 30-40 drop in temp is a huge change for the body.
Similarly to how when I first got there I was drinking 2-3 gallons a day and always thirst.By the time I left I was half of that and satisfied.
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