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Why do they dissapear?

2007-03-11 11:30:51 · 9 answers · asked by jane 2 in Science & Mathematics Weather

9 answers

This may surprise you, but clouds don't always, or even often "disappear" from the sky based on time of day. There certainly are occasions where clouds dissipate, but that has less to do with time of day than with local prevailing weather conditions.

Clouds dissipate if they entrain (or receive) drier air from their surroundings. This drier air (sometime but not always warmer) has more capacity for holding water vapor, and the condensed vapor in the cloud evaporates, becoming invisible again.

That's why seeing clouds dissipate is a sign of fairer weather approaching. It means drier or warmer air is arriving and replacing the cooler wetter air.

2007-03-14 08:12:57 · answer #1 · answered by yoericd 3 · 0 0

Clouds are visible mist of billions of water particles floating in the sky.Clouds are formed when the air cools below its saturation point and causes the water vapour to condense into tiny droplets.When the temperature increase above the saturation point and there is not enough moisture to condense into droplets to form visible clouds they will disappear.They will disappear every time and any time when the conditions are right

2007-03-13 00:42:05 · answer #2 · answered by bryte 3 · 0 0

The main reason clouds disappear as it warms up is, as the temperature rises above the dew point, the clouds evaporate and just become water vapor in the air.

2007-03-11 11:35:13 · answer #3 · answered by the slightly amusing answers of 4 · 0 0

They don't disappear, they dissipate. They either move elsewhere traveling on wind currents, fall as some form of water or scatter as water vapor.

2007-03-11 11:36:00 · answer #4 · answered by marklemoore 6 · 0 0

clouds appear at night also. It's just too dark to see them clearly. Also, they get smaller when it rains.

2007-03-11 11:35:07 · answer #5 · answered by ANON 1 · 0 0

while you're asleep baby, the clouds still hang around depending on air pressure, temperature and wind.......... nightie nightie, sleep tight

2007-03-11 11:42:43 · answer #6 · answered by Anonymous · 0 0

how cool would it be if the clouds still appeared at night, but in a different colour !!!!! =D

2007-03-11 11:34:00 · answer #7 · answered by 18/M/Scotland 3 · 0 1

not so many at night

2007-03-13 04:18:45 · answer #8 · answered by dream theatre 7 · 0 0

i think at night

2007-03-11 13:47:57 · answer #9 · answered by Joy B 2 · 0 0

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