暖积云降水过程中的云雨自动转换

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

摘要: Kessler1,Berry2,Simpson3,Cotton4,胡志晋5等提出了各自不同的云雨自动转换率公式,用参数化的方法处理云雨自动转化过程。本文在二维时变的暖积云降水模式中6,使用Kessler,Berry,胡志晋三种云雨自动转换公式,对不同强度的暖积云进行了数值计算。

Abstract: 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.