Characteristic analysis of satellite images of severe convective weather (thunderstorm) in southeast coast region

The analysis of the GMS-5 satellite images and weather maps in the southeast coast region of our country from 1996 to 1999 showed that the basic digital features of satellite images were identical, while obvious differences existed under six kinds of weather situations in which the severe convective weather phenomenon (thunderstorm) occurred. By analyzing the basic digital features of different satellite images in detail, such as the gray scale and the local standard deviation, the rule was found that the convective clouds will reach the strongest after about four hours. Meanwhile, the developing stages and tendency of severe convective weather phenomenon can be understood much better, and the forecasting ability of thunderstorms will be improved.