摘要
本文利用美国科罗拉多州立大学 95年完成的 RAMS( Regional at-mosphere Modeling system ) 3B版模式 ,通过冷、暖云两种方案 ,以常规报文资料为初值对 1998年 7月 2 0— 2 1日发生在湖北地区的特大暴雨过程进行了模拟分析 ,初步试验表明模式具有模拟此次强暴雨过程的能力 ,2 0日 2 0时至 2 1日 2 0时 2 4小时降水分别为 30 4 mm和 2 0 6mm,最大雨强分别为 4 8mm/hr和 31mm /hr,降水中心位于鄂东地区 ,与实况基本吻合。进一步分析表明聚合体粒子在此次降水中占有主要地位 ,冰相粒子的加入对降水有重要的增幅作用。
By applying CSU Regional Atmospheric Modeling System(RAMS) and conventional message data,the super rainstorm course happened on 98 7 20 21 at Hubei is simulated and analyzed by cold and warm cloud schemes on IBM PC.The elementary experiment indicates that RAMS has the ability of modeling this super rainstorm,and the forecasted precipitations of two schemes are 304mm and 206mm,maximal intensities of precipitaiton are 48mm/h and 31mm/h,center of rainstorm is located in the east of Hubei.This is in accord with what is actually happening.Farther analysis makes clear that SW airflow supplied enough vapor and energy for this super rainstorm,aggregates played important role in this case,and the ice state particles had important action on enhancing precipitation.
出处
《气象科学》
CSCD
北大核心
2001年第2期127-135,共9页
Journal of the Meteorological Sciences
基金
20 0 0年 L ASG重点课题‘中-β非静力高分辨数值模式的建立与模拟研究’资助
