2007-08-15 22:00:47 · 12 answers · asked by Anonymous in Science & Mathematics ➔ Weather
blanketing effect of cloud cover... insulates against loss of the heat that occurred during sunlight
2007-08-15 22:03:55 · answer #1 · answered by Anonymous · 1⤊ 1⤋
During the day time,the incoming short-wave solar radiation passes through the atmosphere without heating it and reaches the earth and heats the earth's surface first.So the earth is heated first and the atmosphere above it is heated by conduction by the reflected long-wave radiation.In the night, the earth becomes colder and starts cooling the air above it.
If, at this time if there is a cloud cover,the cloud absorbs the heat radiation emitted by the earth's surface as water vapour in the cloud is a powerful absorber of this long-wave radiation.When the surface becomes colder than the cloud,the cloud starts re-radiating the heat back to the surface.This exchange of heat between the cloud and the surface continues throughout the night keeping the surface and the air adjacent to it warmer. If there are clear nights, the radiation from the surface will escape to the atmosphere and the earth will become colder.
2007-08-16 09:53:25 · answer #2 · answered by Arasan 7 · 0⤊ 0⤋
The sun warms the land during the day when it's Sunny and at night if it's clear there's a clear path for all the heat that reached the ground from the Sun to escape back into space and when it's cloudy the clouds act as a shield to stop the heat from escaping.
2007-08-16 10:43:57 · answer #3 · answered by Anonymous · 0⤊ 0⤋
Well, during the day, the heat is absorbed by the ground layer as the sunshines. During the night the heat on the ground is radiated to the atmosphere, and when there is cloud cover, the heat radiated from the ground is conserved through insulation, therefore the heat radiations sort of bounces back to the ground which gives a warming effect. In the desert where there is hardly cloud cover, it gets cold quickly as there is no bareer to impose insulation between the outer space and the atmosphere.
I hope you are answered
2007-08-16 05:15:41 · answer #4 · answered by boago d 2 · 1⤊ 1⤋
Because on a nice clear night its easier for the heat to escape as there are no clouds.
2007-08-16 10:23:40 · answer #5 · answered by Ste 1 · 0⤊ 0⤋
The clouds acts as an insulator and prevents the heat from escaping into the atmosphere.
2007-08-16 09:21:46 · answer #6 · answered by Anonymous · 0⤊ 0⤋
Thats a great question as I have also noticed that here in Central Oregon. I believe that the clouds act as an inversion layer holding in heat kinda like a blanket...sorry but thats the best I have. I do know what you mean though...where are you from?
2007-08-16 05:05:53 · answer #7 · answered by Anonymous · 1⤊ 1⤋
Yes, all of the above.. They trap heat in and when they are not there all the heat escapes to space. Think about the desert. So hot in the day, but freezing at night. Nothing to trap the heat* ^.^
2007-08-16 05:08:03 · answer #8 · answered by neogiee 2 · 1⤊ 1⤋
Because the clouds have moisture in them which adds to the humidity levels. It may be the same temperature outside but add in the humidity factor and hence it feels warmer and muggy.
2007-08-16 06:31:08 · answer #9 · answered by Henry H 6 · 0⤊ 1⤋
during day time heat is absorbed by earth which comes with sunlight. after mid day heat is released and releasing continued for tme till all heat is released by earth. in night heat is releasing and when sky is clear all released heat escape from earth atmoshphere. when night is cloudy heat released cannot escape from earth atmoshphere. so cloudy night is warmer than clear night.
2007-08-16 05:09:51 · answer #10 · answered by Anonymous · 2⤊ 1⤋