How does the weather forecast estimate the weather?

1, one is the traditional synoptic method, that is, the meteorological data of the same time and level are drawn on a special map, which is called weather map. By analyzing various meteorological elements on the weather map, forecasters can understand the distribution and structure of current weather systems (such as typhoons and fronts) and judge the relationship between weather systems and specific weather (such as rain, wind and fog). ) and their future evolution, so as to make weather forecasts everywhere. At present, the drawing and analysis of weather maps are all done by computers.

2. The other is "calculated" by computer. Because the motion of the atmosphere follows some known primitive physical laws, according to these laws, the motion state of the atmosphere can be written as a set of partial differential equations. As long as the initial value (the current state of the atmosphere) is given, the variable values of the time-varying equations can be solved, and the future state of the atmosphere can be obtained accordingly. The process of solving the equation is extremely complicated, and a large number of meteorological data need to be processed within the specified time. Even the simplest atmospheric equation must be operated on a high-speed computer.