How to see precipitation in satellite cloud images

In satellite cloud images, white represents cloud and rain areas. The thicker the white, the greater the rainfall in the area. You can see that some places are white, some places are black, and other places are gray, etc. If the surface of the earth is a clear sky area, what the satellite observes is the infrared radiation information emitted from the ground to space. The satellite cloud map shows: Black and gray. The darker the black, the stronger the ground radiation and the clearer the weather. When the sky above a certain place is covered with clouds and rain, what the satellite observes is the infrared radiation emitted from the cloud tops to space, which appears as white or off-white. White means The radiation is very weak, the temperature is very low, the cloud system is very thick and dense, and the rainfall intensity is also very high.