NUMERICAL SIMULATION ON THE PRECIPITATION AND VARIATION OF THE LOCATION AND INTENSITY OF THE SUBTROPICAL HIGH

The operational numerical weather forecasting model T63 is employed to study the impacts of precipitation on the movement of the anticyclone overthe Western Pacific. Sensitivity experiments are designed by using different vertical profiles ofconvective latent heating. Results show that in response to the change of vertically non-uniform diabatic heating, the in-situ wind fields change correspondingly and thus the location and intensity of the subtropical high are changed. Meanwhile, the changed subtropical high also affects the location of precipitation. It is then concluded that in short and medium terms, there exists interaction between precipitation and variation of the subtropical high.