Calculation Method for Initial Value of Kalman Filter and Its Application

For the purpose of application in meteorology, the principal theory and calculating method of Kalman filter used in weather forecast operational system are discussed. Then the testing results in different seasons are described. Furthermore, its adaptability, stability and usability for various numerical models are analysed. The method is of great advantage for the weather forecast, and the prospects of application in the area of meteorology are very hopeful.