暴雨中尺度系统数值模拟与动力诊断研究  

Numerical Simulation and Dynamic Analysis of Mesoscale Torrential Rain Systems

作　　者：高守亭[1] 孙建华[1] 崔晓鹏[1] 

机构地区：[1]中国科学院大气物理研究所,北京100029

出　　处：《大气科学》2008年第4期854-866,共13页Chinese Journal of Atmospheric Sciences

基　　金：国家自然科学基金资助项目40575025;40505012;武汉暴雨研究所暴雨开放基金项目IHR2006K01

摘　　要：本文总结了近年来我们在暴雨中尺度系统数值模拟与动力诊断研究领域的主要成果。从广义位涡理论、梅雨锋及变形锋生、暴雨中尺度系统的不稳定性、有限区域风场分解技术对暴雨中尺度系统的识别、中尺度波流相互作用理论以及数值模拟研究等方面进行了分类概括。对暴雨中尺度系统数值模拟与动力诊断的研究回顾表明,雷达资料同化进入模式有效地改进了对中尺度系统发生、发展的模拟结果;一些新的物理量,如非均匀饱和位涡、对流涡度矢量、变形场锋生以及有限区域风场分解方法等在暴雨中尺度系统及热带对流发展诊断分析中得到了广泛应用。同时,波流相互作用理论也被应用到了中尺度系统发展的动力分析研究中。Abstract Some progresses in numerical simulation and dynamic analysis of mesoscale torrential rain systems in recent years are summarized in this article, which are divided into several sections, such as generalized moist potential vorticity, Meiyu front and its frontogenesis, instability of mesoscale rainstorms, window partition in a limited region and its application in the identification of mesoscale rainstorms, mesoscale wave-flow interaction, and numerical simulations. It shows that assimilation of radar observations into numerical models improve the simulations well and some new diagnostic tools such as non-uniformly saturated moist potential vorticity, convective vorticity vector, deformation, and window partition in a limited region are widely used in diagnostic analysis of mesoscale rainstorms and tropical convections. And wave-flow interaction theory is also extended to be used in the dynamic analysis of mesoscale torrential rain systems.

关 键 词：暴雨 中尺度系统 数值模拟 动力诊断 

分 类 号：P435[天文地球—大气科学及气象学]