DIAGNOSTIC ANALYSIS USING 500-MB MOIST GEOPOTENTIAL TENDENCY EQUATION AND ITS APPLICATION

Using the moist geopotentical tendency equation, diagnostic analysis of 17 cases of rain storms in North China Plain has been made. The result shows that the variation of latent heat energy advection more important effect on the 500mb moist geopotential tendency. The calculation of the geopotential tendency gives good indications in the forecasting of heavy rain area and the movement of low systems.