What is the basis of the weather forecast?

Weather forecast is to predict the weather conditions in a certain period in the future by applying the law of atmospheric change and according to the current and recent weather situation. It is based on the analysis of satellite cloud images and weather maps, combined with meteorological data, terrain and seasonal characteristics and people's experience. For example, the satellite cloud picture of China Central Meteorological Observatory was taken by Fengyun-1 meteorological satellite made in China, and the satellite cloud picture was used for analysis. It can improve the accuracy of weather forecast, and the time limit of weather forecast is usually divided into three types: short-term weather forecast (2 ~ 3 days), medium-term weather forecast (4 ~ 9 days) and long-term weather forecast (10 ~ 15 days or more). CCTV mainly broadcasts short-term weather forecast every day.

The main contents of the weather forecast are the rainy weather, the highest and lowest temperatures, wind direction and wind force in a region or city in the future and special disastrous weather. As far as China is concerned, weather forecast can directly serve industrial and agricultural production and people's lives by accurately predicting the location and intensity of natural disasters such as cold wave, typhoon and rainstorm. With the development of productive forces and the progress of science and technology, the scope of human activities has been expanded unprecedentedly, and the impact on nature has been increasing, so weather forecasting has become an indispensable part of modern society.

According to meteorological observation data, it is an important goal of atmospheric science research to make a qualitative or quantitative prediction of the weather conditions in a certain area or a certain place in the future by applying the principles and methods of meteorology, dynamic meteorology and statistics, which is of great significance to people's lives.