Meteorologists usually divide clouds into three types. What is a flat layered cloud formed near the earth's surface?

Stratospheric meteorologists usually divide clouds into three types of flat clouds, which are formed near the earth's surface and called stratocumulus clouds.

A cloud group or cloud layer consisting of massive, flaky or striped clouds, usually arranged in rows, groups or waves. Clouds are quite large, and their apparent width angles are mostly greater than 5 (equivalent to the apparent width of one arm and three fingers). Clouds are sometimes distributed all day, sometimes sparsely, often gray and grayish white, and some parts are often dark. Stratocumulus sometimes rains and snows, usually in small amounts. In addition to direct generation, stratocumulus can also be evolved from altocumulus, stratocumulus and nimbostratus, or expanded or diffused from cumulus and cumulonimbus. Stratocumulus is a flat stratocumulus formed near the surface of the earth. It's usually gray. Sometimes it covers most or even ... cirrus clouds can only be formed at very low temperatures, so cirrus clouds are made up of tiny ice crystals.

Cirrus belongs to the Gaoyun family. Sometimes it is generated at the highest height where clouds can be generated, and the cloud bottom is generally 4500 to 10000 meters. It is composed of tiny ice crystals in the sky, and the ice crystals are sparse, so the cloud is thin and transparent, white and has the luster of ice crystals. According to its shape and structure, cirrus can be divided into four types: cirrus, hook cirrus, pseudo cirrus and dense cirrus.

Cirrus clouds are located in the upper troposphere and lower stratosphere of the earth's atmosphere, and play an important role in global energy balance, radiation budget and weather changes. On the one hand, cirrus clouds reflect (or scatter) solar radiation, reducing the energy reaching the surface and atmosphere and cooling the atmosphere; On the other hand, cirrus absorbs long-wave radiation from the surface and the atmosphere, and heats the atmosphere.

The cooling effect of cirrus on the atmosphere is closely related to the reflectivity of cirrus atmosphere. Cirrus cloud consists of a large number of non-spherical ice crystal particles, and the scattering and absorption characteristics of non-spherical ice crystal particles in cirrus cloud in visible and infrared bands are very important for inferring the optical and microphysical characteristics of cirrus cloud by remote sensing technology.