What kind of clouds are there on rainy days?

All kinds of clouds in the sky are mainly formed by air rising and cooling, which makes water vapor saturated and condensed. Due to the difference of temperature and ascending motion, the composition and shape of clouds are varied. For example, a large range of air gathers and rises to form a layered cloud, which is the vast sea of clouds you see on the plane or on the mountain; Local air convection forms vertical convective clouds, which are cauliflower-like clouds seen on the ground; Wave clouds are formed by fluctuations and small convection in the atmosphere. They are smooth steamed bread clouds and silky clouds floating in the sky.

In meteorological observation, according to the height of cloud base and the basic shape characteristics of clouds, clouds are divided into high clouds, medium clouds and low clouds, and then high clouds are divided into cirrostratus and cirrocumulus. Middle clouds are divided into high-level clouds and cumulus clouds; Low clouds can be divided into 65,438+00 genera such as stratocumulus, stratocumulus and nimbostratus, and further divided into 29 categories according to their shape characteristics, arrangement, light transmittance, attached clouds and whether they evolved from other clouds.

The change of cloud indicates the change of weather to a great extent.