In which layer of the atmosphere do weather phenomena such as clouds, rain and snow occur?

Weather phenomena such as clouds, rain and snow occur in the troposphere of the atmosphere. The troposphere is the lowest layer of the atmosphere, close to the earth's surface, with a thickness of about 10 to 20 kilometers. The atmosphere in the troposphere is greatly influenced by the earth. The temperature of this layer decreases with the increase of height, and the temperature decreases by 5 ~ 6℃ with each increase of 1000 m. The survival of animals and plants and most of human activities are also on this floor. This layer of air is called troposphere because of its obvious convection.

Above the troposphere is the stratosphere, about 20 to 50 kilometers from the earth's surface. Stratospheric air is relatively stable and the atmosphere flows smoothly, so it is called stratosphere. There is almost no water vapor and dust in the stratosphere. The stratosphere is below 30 kilometers and the temperature is around -55℃.

Above the stratosphere is the mesosphere, about 50 to 85 kilometers from the earth's surface. The air here is already very thin. The outstanding feature is that with the increase of height, the temperature drops rapidly and the vertical convection of air is strong.

Above the middle layer is the warm layer, which is about 100 to 800 kilometers away from the earth's surface. The most prominent feature of the warm layer is that when the sun shines, the ultraviolet rays in the sun are absorbed by a large number of oxygen atoms in the layer, so the temperature rises, so it is called the warm layer.

The escape layer is above the warm layer and consists of charged particles. In addition, there are two special layers, namely the ozone layer and the ionosphere. The ozone layer is 20 to 30 kilometers above the ground, actually between the troposphere and the stratosphere. This layer is mainly formed by photochemical action of ultraviolet rays of sunlight on oxygen molecules, which turn them into ozone. The ionosphere is very thick, about 80 kilometers from the earth's surface. Ionosphere is a kind of gas in the sky, which is irradiated by ultraviolet rays of sunlight and ionized into charged positive ions, negative ions and some free electrons. The ionosphere has a great influence on electromagnetic waves. We can realize long-distance communication of electromagnetic waves by using the characteristic that electromagnetic short waves can be reflected back to the ground by the ionosphere.