湖州“2022-06-24”梅雨期暴雨过程分析  

Analysis of rainstorm process of“2022-06-24”Meiyu period in Huzhou

作　　者：向华 吴彬 奚雷 周雪婧 陶威 Xiang Hua;Wu Bin;Xi Lei;Zhou Xuejing;Tao Wei(Huzhou Meteorological Bureau,Huzhou 313000)

机构地区：[1]湖州市气象局,湖州313000

出　　处：《气象水文海洋仪器》2024年第2期85-88,93,共5页Meteorological,Hydrological and Marine Instruments

基　　金：湖州市公益性应用研究项目(2022GZ47)资助。

摘　　要：文章采用中尺度自动气象站资料、双偏振雷达资料、ERA5再分析资料及数值预报资料,对2022非典型梅雨年湖州一次较典型的梅雨期暴雨过程进行了分析。结果表明:此次过程对流性雷雨大风阶段雷达表现为飑线和大雨滴、高浓度特征,稳定性降水阶段雷达表现为小雨滴和低浓度特征;副高的强度减弱缓慢,切变线和700 hPa急流长时间在区域内维持是导致强降水的主要原因;强降水数值模式预报强降水落区向南偏移。需要关注最新预报调整及物理量的变化并合理订正,加强多种数值预报产品的对比分析,有助于提高暴雨预报的准确性。Based on the data of mesoscale automatic weather station,dual-polarization radar data,ERA5 reanalysis data and numerical forecast data,this paper analyzes a typical Meiyu period rainstorm process in Huzhou in 2022.The results show that the radar in the convective thunderstorm gale stage shows the characteristics of squall line,heavy raindrops and high concentration,while during the stable precipitation stage,the radar shows the characteristics of small raindrops and low concentration.The intensity of the subtropical high weakens slowly,and the long-term maintenance of the shear line and 700 hPa jet stream in the region are the main reasons for the heavy rainfall.The numerical model predicts that the heavy rainfall area moves southward.It is necessary to pay attention to the latest forecast adjustment and the changes of physical quantities and make reasonable corrections.It is helpful to improve the accuracy of rainstorm forecast by strengthening the comparative analysis of various numerical forecast products.

关 键 词：暴雨 梅雨 双偏振 

分 类 号：P458.121.1[天文地球—大气科学及气象学]