宁夏夏季两次暴雨过程诊断分析  

Diagnostic Analysis of Two Summer Rainstorms in Ningxia

作　　者：郝艳琼 顾楠楠 胡文东[1] 邵建 杨侃 徐文嘉 贾净翔 王菲 吴尚毅 Hao Yanqiong;Gu Nannan;Hu Wendong;Shao Jian;Yang Kan;Xu Wenjia;Jia Jingxiang;Wang Fei;Wu Shangyi(School of Atmospheric Science,Chengdu University of Information Technology,610225 Chengdu,Sichuan;Erlianhot Meteorological Bureau,011100 Xilingol,Inner Mongolia Autonomous Region;Yinchuan Meteorological Bureau,750100 Yinchuan,Ningxia;Ningxia Weather Observatory,750100 Yinchuan,Ningxia;Shizuishan Weather Bureau,753000 Yinchuan,Ningxia)

机构地区：[1]成都信息工程大学大气科学学院,四川成都610225 [2]二连浩特市气象局,内蒙古锡林郭勒011100 [3]银川市气象局,宁夏银川750100 [4]宁夏气象台,宁夏银川750100 [5]石嘴山市气象局,宁夏银川753000

出　　处：《宁夏工程技术》2021年第4期295-303,共9页Ningxia Engineering Technology

基　　金：宁夏回族自治区重点研发项目(2018BEG03002);四川省应用基础研究重点项目(2018JY0056);软件自动生成与智能服务四川省重点实验室项目(ZN2021003)。

摘　　要：利用常规观测资料、多普勒天气雷达资料、欧洲中期天气预报中心再分析资料,对2018年宁夏夏季两次暴雨过程进行诊断分析。结果表明,两次降雨过程天气系统配置相似,副热带高压位置的不同造成水汽来源和输送的差别;各层涡度散度场配置及垂直速度场的不同,导致降雨强度和时间范围的区别;水汽条件不同是影响降水量差异的原因;雷达产品表明,强回波与强降水的峰值及降水过程的差别相对应。Regular meteorological observation data,Doppler weather radar data and European Center for Medium-Range Weather ForeCasts reanalysis data are used to diagnose and analyze the two rainstorm processes in the summer of 2018 in Ningxia.The results show that:the weather system configuration of the two rainfall processes are similar,yet the difference of water vapor source and transport is caused by the different positions of the subtropical high.The difference of rainfall intensity and time range is caused by the difference of each layer vorticity divergence field and vertical velocity field.Differences in water vapor conditions are responsible for the differences in precipitation.Radar products show that the peak value of strong echo corresponds to the heavy precipitation and the difference of precipitation process.

关 键 词：暴雨过程 物理量 雷达产品 诊断分析 

分 类 号：P458.121[天文地球—大气科学及气象学]