Why are all kinds of clouds in the sky?

Because the causes of cloud formation include thermal action, cold and warm air confrontation, terrain action and other factors, when these factors change, clouds will also change, so there are various clouds in the sky.

cloud formation process: water vapor enters the lower atmosphere from the evaporation surface, where the temperature is high and contains more water vapor. If the hot and humid air is lifted, the temperature will gradually decrease, and when it reaches a certain height, the water vapor in the air will reach saturation.

if the air continues to be lifted, there will be excess water vapor. If the temperature there is higher than ℃, the excess water vapor will liquefy into small water droplets; If the temperature is lower than ℃, the excess water vapor condenses into small ice crystals. When these small water droplets and small ice crystals gradually increase and reach the level that human eyes can recognize, what we call clouds are formed.

Extended data:

Cloud can not only help drive the water cycle and the whole climate system, but also play an important role in weather forecasting, and it is also one of the uncertain factors in climate change research.

All kinds of clouds represent different weather conditions:

1. Hook clouds in the sky and rain on the ground

Hook clouds refer to hook cirrus clouds. Behind such clouds, fronts (especially warm fronts) and low-pressure troughs often move, which indicates rainy arrival.

2. battery cloud, raining

battery cloud refers to fort-shaped altocumulus or fort-shaped stratocumulus, which mostly appears in front of the trough of low pressure, indicating that the air is unstable, and thunderstorms usually come every 8 to 1 hours.

3. Carp spots in the sky, and the valley in the bright sun need not be turned over.

Carp spots refer to altocumulus translucidus, which is often controlled by denatured high-pressure air masses that change from cold to warm. If the clouds do not continue to thicken, it will still be sunny in the short term.

4. Fish-scale day means cirrocumulus. The appearance of such clouds indicates that the upper atmosphere is unstable. If the clouds continue to decrease and thicken, it will rain or wind soon.

Baidu Encyclopedia-Clouds (natural phenomena)

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