绥化市一次暴雨成因分析  

Cause analysis of heavy rain caused by a subtropical high and typhoon in Suihua city

作　　者：高赛男[1] 滕月 王秀娟[1] 柏金凤[1] GAO Sai-nan;TENG Yue;WANG Xiu-juan;BAI Jin-feng(Suihua Meteorological Bureau,Heilongjiang Suihua 152000)

机构地区：[1]绥化市气象局,黑龙江绥化152000

出　　处：《黑龙江气象》2018年第4期6-7,共2页Heilongjiang Meteorology

摘　　要：本文利用常规观测、卫星、雷达、自动站资料对2018年7月24-25日绥化市区域性暴雨进行了成因分析,研究结果表明:10号台风"安比"北上移至黑龙江,携带大量水汽和冷空气,500hPa高空槽与地面台风低压形成深厚的辐合系统,为本次暴雨提供环流背景。来自黄海、渤海的暖湿水汽伴随着低空急流沿着副热带高压588线外围向绥化市输送;另外高空槽受到副高阻挡,移动缓慢,是绥化市降水长时间持续的主要因素。analyzes the causes of regional heavy rain in Suihua City on July 24-25,2018 using conventional observations,satellites,radars,and automatic station data.The results show that the No.10 typhoon “Anbi” moved northward to Heilongjiang,carrying a lot of water vapor and cold air,and the 500 hPa high-altitude trough and the ground typhoon low pressure formed a deep convergence system,providing a circulation background for this rainstorm.The warm and humid water vapor from the Yellow Sea and the Bohai Sea is accompanied by a low-altitude jet transported to the city of Suihua along the periphery of the subtropical high-pressure 588 line;In addition,the high-altitude trough is blocked by the sub-high,and the movement is slow,which is another major factor for the long-term persistence of precipitation in Suihua City.

关 键 词：安比 副热带高压 高空槽 冷空气 

分 类 号：P458.121.1[天文地球—大气科学及气象学]