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2007-02-08 10:45:48 · 4 answers · asked by Questionable23 2 in Science & Mathematics Weather

4 answers

The water on earth is heated and evaporates into the air. The warm air carrying moisture rises into the atmosphere. The troposhpere gets colder the higher you go up, from surface temperature to -50 deg C or so at 10km. When the moisture rises into the colder air, the temeperature drop will allow the moisture to condense into clouds. The clouds will continue to grow until they can no longer hold the water. Then it rains. The balance between the lift due to temperature and the force of gravity keeps the moisture contained mostly within the troposphere.

2007-02-08 11:24:57 · answer #1 · answered by bkc99xx 6 · 1 0

Clouds are mainly restricted to the troposphere because the stratosphere puts a lid on rising air as it is very stable. You can see this with thunderstorm clouds. The cloud rises to the tropopause and then spreads out to form the anvil of the cloud. The cloud is not going into the stratosphere. If the clouds won't go into the stratosphere, you won't get rain there either.

There are stratospheric clouds in polar regions and these can be seen as noctilucent clouds. It is also in the stratospheric clouds over Antarctica that a lot of the ozone depletion takes place. Stratospheric clouds do not have sufficient depth for precipitation to occur.

2007-02-08 20:53:15 · answer #2 · answered by tentofield 7 · 1 0

In the trphosphere the temperature falls with height.Once you reach the tropopause which is the upper limit of the troposphere, the temperature begins to rise and this trend continues in the stratosphere.This is mainly due to the direct absorption of sun's heat rays by the ozone layer which occurs only at that height.As moist air rises, it should be cooled sufficiently to form the clouds.This can happen only in the troposphere where temperature falls with height whereas the temperature rises with height in the stratosphere which will not be favourable for cloud formation.

2007-02-09 13:17:24 · answer #3 · answered by Arasan 7 · 0 1

Because the troposphere is the layer in our atmosphere where all weather conditions occur and it's one way to prevent harmful rays from the sun entering in our atmosphere. It also cools the earth.

2007-02-08 20:50:15 · answer #4 · answered by Anonymous · 1 0

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