“93.8”鲁西南大暴雨的数值试验  

A NUMERICAL EXPERIMENT ON “93.8”HEAVY RAIN OF THE SOUTHWEST OF SHANGDONG

作　　者：周祖刚[1] 张维桓[1] 成新喜[1] 范红军 

机构地区：[1]空军气象学院

出　　处：《高原气象》1999年第2期171-178,共8页Plateau Meteorology

基　　金：国家自然科学基金;空司基础理论课题

摘　　要：针对中尺度地形对我国天气影响的重要性，对ＲＥＭ先后进行水平、垂直分辨率的提高，并运用常规报文资料获得初始场，采用包络地形等方法获得模式所需的地形资料，对１９９３年８月４～５日的大暴雨个例进行了数值试验。结果表明，仅提高ＲＥＭ的水平分辨率，对降水预报有一定的改进和提高，但多报出了几个大暴雨中心。而模式水平及垂直分辨率均提高后（下称Ｃ模式），其降水场、形势场的预报有明显的改进和提高，虚假降水中心消失，Ｃ模式的水平、垂直分辨率基本上是协调的。In order to research the important influence of the meso scale topography on Chinese weather,an improvement has be en made on the horizontal and vertical resolution of REM,and the heavy rain case of August 4 to 5,1993 (called “93.8”) has simulated wi th the higher resolution model. Using the routine data to get initial field and model topography by envelope method. Compared to the forecast results of model A,B and C,observation,it is found that the precipitation and circulation pattern forecast of model C has been improved greatly than that of model A and B. It is found that meso scale topography has an important influence on heavy rain forecast.

关 键 词：Η坐标 模式分辨率 包络地形 数值试验 暴雨 

分 类 号：P426.62[天文地球—大气科学及气象学] P435