give reason why do desert have cold Nights
Answers
deserts have cold nights because of the western disturbances and coriolis force
Answer:
Not all deserts do get cold at night and even those that do, can still remain rather balmy during certain times of the year! This is a common myth still floating about! Air in deserts will indeed cool off in a rapid fashion if:
there is no cloud cover (even high thin clouds act as a blanket. In many deserts you do get rather cloudy nights even if there is no rain)
there is no wind (in windy weather, the atmosphere will remain mixed and the lowest layer will not form an inversion required for really cold temps. In deserts, you get tons of windy weather)
there is no moisture in the air (A given? No! Just try places like Kuwait, Dubai and such. They sit in deserts at or near the coast, where the sea is at 95 degrees in early fall! Lots of moisture. No that is not a dry heat! You can enjoy this sort of weather also in Hermosillo, Sonora! Overnight lows of some 95 to 98 degrees F in August and dewpoints in the fifties. Highs would go usually just into the mid 110 s.
Even if the air does cool off rapidly, you still do not get necessarily a cold night! When you go as high as 120 F during the day, it might cool off some 50 F. You still end up in balmy 70 F.
In winter, air is usually drier, air temperature does not go as high during the day and you still lose 50 F. So if you get 65, your morning low might be 15 F. That is lousy cold. This kind of weather is typical for areas around El Paso, Texas during January. In April, the numbers would be 92 and some mid forties. Still cold, those mornings for camping out. Usually deserts that are far inland do have larger temperature swings, but even there in summer, the night are never cold (Cold being below 50 F) I have camped out in the Chihuahuan Desert on numerous occasions during all seasons, as well as in other deserts of North America so I dare to put this info out here even if it contradicts common knowledge.