THE STUDIES OF AUTOCONVERSION RATE FROM “CLOUD WATER” TO “HYDROMETEOR WATER” IN THE RAIN FORMING PROCESS OF WARM CUMULUS CLOUD

In this paper three formulas of autoconversion rate were used to calculate the precipitation using a two-dimensional and timedependent model of warm cloud. The result shows that the differences in total precipitation are small (less than 6%). But it becomes larger in weak warm rain process, about 20%,with maximum value less than 8200.It is found out that the autoconversion rate is not a sensitive factor in numerical simulation of warm cloud rainfall.