What colors are there on the satellite cloud picture, and what do they represent?

In the satellite cloud picture, green represents land, and seeing green represents sunny weather. Blue represents the ocean, and seeing blue means sunny weather. White is a rainy area. The whiter the color, the thicker the clouds. The brighter the white is, the more obvious the precipitation is, and the darker the white is, it is cloudy.

If the earth's surface is a clear sky area, the satellite observes the infrared radiation information sent from the ground to space, which is black and gray; The darker the black, the stronger the ground radiation and the better the weather. The transition area between clear sky area and rainy area is dark gray, gray and light gray cloud system, which indicates that there are clouds with different thicknesses and no obvious precipitation.

Application of satellite cloud image

Using satellite cloud images, we can identify different weather systems, determine their positions, estimate their intensity and development trend, and provide basis for weather analysis and weather forecast. The types, genera and precipitation of clouds can be identified by the characteristics of satellite cloud images such as morphology, structure, brightness and texture. It can identify large-scale cloud systems, such as spirals, bands, comma, waves and cells, and can be used to infer the position and characteristics of large-scale weather systems such as fronts, temperate cyclones, tropical storms and high-altitude jets.

According to the cloudless area of clear Wan Li, the positions of anticyclone and high altitude ridge are inferred. It can also identify local strong storms, such as thunderstorms, squall lines and other small and medium-sized weather systems. If we indicate the number of encrypted satellite detection (such as once every 30 minutes), we can monitor the activities of local strong storms and make real-time weather forecast and early warning.

For the vast ocean, plateau, desert and polar regions with few weather stations, satellite cloud images are very precious detection data, which plays an important role in improving forecast accuracy. In areas with dense weather stations, the images given are relatively complete and systematic, which can not be replaced by other observation methods.