中尺度分析系统LAPS应用雷达资料的个例研究  

A Study on Application of Dopplar Radar Data in LAPS

作　　者：李红莉[1] 崔春光[1] 王志斌[1] 王晓芳[1] 谢有才 

机构地区：[1]中国气象局武汉暴雨研究所 [2]上海91528部队气象台

出　　处：《高原气象》2009年第6期1443-1452,共10页Plateau Meteorology

基　　金：中国气象局气象新技术推广项目(CMATG2008Z08);国家重点基础研究发展计划项目(2004CB418307);科技部公益行业专项(GYHY200706012);武汉暴雨研究所基本科研业务费专项(0603);武汉暴雨研究所科研业务专项(0803);湖北省气象科技发展基金(2007Z03)共同资助

摘　　要：武汉暴雨所引进国际先进的中尺度分析系统LAPS,经成功本地移植后,该系统能融合华中区域多种非常规观测资料,提供包含丰富中尺度信息的高分辨率中尺度分析场。针对一次梅雨期强降水过程,利用LAPS系统进行中尺度分析,通过对比该系统融合多普勒雷达资料前后各种物理量场的差异,研究了多普勒雷达资料在该系统中的作用。结果表明,LAPS融合雷达径向风后,对风场的改善比较明显,能揭示流场的中尺度信息。融合多种资料后的LAPS中尺度分析场比NCEP再分析场更接近实况,能清楚地反映中尺度特征,可作为分析此次强降水过程发生、发展的工具。融合雷达资料反射率后,LAPS云分析能提供与实况接近的较细致的云信息,有利于了解暴雨过程中云参数的演变,同时也为数值模式热启动提供条件。The Local Analysis and middle of China. LAPS can give many Pred high System （LAPS） has been successfully transplanted in the resolution mesoscale analysis fields by ingesting various nonobservational data. Mesoscale analysis is carried out on a heavy rainstorm event in Meiyu front with LAPS, and comparison is made between the schemes to disclose the compact of application of Dopplar radar data. Some conclusions are as follows： The wind field is greatly improved by ingesting Dopplar radar data, which helps to disclose the mesoscale character in the stream field. LAPS analysis fields are more close to observations than the background ones, which can be used to further analyze the heavy rain storm event. Also, the cloud information afforded by LAPS cloud analysis after ingesting Dopplar radar data is close to satellite observations. Which helps to understand the cloud evolution in the process of heavy rainstorm event.

关 键 词：LAPS系统 中尺度分析 云分析 多普勒雷达资料 

分 类 号：P445[天文地球—大气科学及气象学]