How to interpret satellite cloud images?

The spectral characteristics of objects are reflected by hue and color. Photo coloring and color difference are the basis to distinguish various objects. Several satellite photos used in geography textbooks of junior high schools in nine-year compulsory education are basically false color composite photos. In a false color composite photograph

Generally speaking, plants are red, cities are blue-gray, water bodies are blue (dark parts are black), wasteland is gray and sand is yellow, which are obviously different from natural colors. On the "satellite cloud picture" at the bottom of the third volume, blue represents the ocean, green represents the land, and white is the cloud and rain area, white.

The thicker the temperature, the thicker the cloud, and it often rains below this cloud area. Every night, the satellite cloud images used for CCTV weather forecast are the same as those at the bottom of the third album.