Why are cold deserts cold at night?

Answer 1

The sky tends to be cloudless and so, lots of heat (the one stored on the ground/sand) can irradiate to outerspace. Plus, there is little humidity in the air. Would there be more humidity, it would act as a temperature buffer. The sky tends to be cloudless and so, lots of heat (the one stored on the ground/sand) can irradiate to outerspace. Plus, there is little humidity in the air. Would there be more humidity, it would act as a temperature buffer.

Answer 2

There is little humidity or cloud cover to hold in the heat so it quickly radiates off into space once the sun goes down.

There is little humidity or cloud cover to hold in the heat so it quickly radiates off into space once the sun goes down.

Answer 3

Cold deserts are pretty much cold all the time. But of course gets colder when there's no warming sunlight coming down.

Cold deserts gets cold b/c of the usual things, distance from equator and elevation being the main drivers.

Answer 4

The very dry air of the desert holds little moisture and thus holds little heat so as soon as the sun sets, the desert cools considerably. Clear, cloudless skies also help to quickly release heat at night. Mos deserts have very low temperatures at night.

Answer 5

There is a diurnal temperature range in all places obviously because the sun shines in the day and doesn't at night. In the desert it can be particularly pronounced due to the lack of water vapor in the air.

At night, there is a net radiation loss at the surface simply because there is no incoming solar radiation, and heat is radiated away from the surface (as is constantly occurring). In a more humid region, some of this heat would be captured by the water vapor in the air, being a greenhouse gas. But in an arid region such as a desert, most of the radiation can simply pass through the atmosphere and into space, cooling the surface as much as possible.

Answer 6

During the day the Sun heats the air and surface of the ground, there are often few clouds as there is little water on the land to evaporate.

At night, heat radiates through the clear skies into space, the lack of water is a considerable contributor too as water has a very high specific heat (much greater than rock or sand) and can hold a lot of warmth.

Answer 7

In a desert there are rarely clouds and high humidities that act as a blanket to hold in heat. The heat accumulated during the day quickly radiates back into space.

Answer 8

Since there is little humidity and cloud cover to hold in the heat, the desert quickly radiates the heat absorbed during the day back into space and the temperature quickly drops.

Answer 9

There is little humidity or cloud cover to hold in the heat so it quickly radiates off into space once the sun goes down.

Answer 10

Deserts generally have little cloud cover and humidity to hold in daytime heat once the sun sets.