和田地区2020年4月17—23日强降水天气过程分析  

Analysis of Heavy Precipitation Weather Process in Hetian Area From April 17 to 23,2020

作　　者：肖艳 XIAO Yan(Hetian Prefecture Meteorological Bureau,Hetian,Xinjiang 848000)

机构地区：[1]和田地区气象局,新疆和田848000

出　　处：《农业灾害研究》2022年第7期146-148,共3页Journal of Agricultural Catastrophology

摘　　要：利用自动气象站观测资料、NCEP1°×1°再分析资料等对和田地区2020年4月17—23日强降水天气过程进行分析,得出结论:在高层100 hPa上表现为东部型的南亚高压环流背景下,500 hPa中亚低涡、700~850 hPa切变线等是主要影响系统;同时中低层水汽充足,加上低层辐合高层辐散的抽吸作用引发强烈的垂直上升运动,中低层θ值随着高度的增加趋于减小,这些都是促使强降水天气出现并发展的有利条件。Used the observation data of automatic weather station,NCEP 1°×1°reanalysis data,analyzed the heavy precipitation weather process in Hetian area from April 17 to 23,2020,and draw the following conclusions:under the background of the South Asian high circulation with the eastern type on the upper 100 hPa,the 500hPa Central Asian vortex and the 700~850 hPa shear line are the main influence systems;At the same time,there was sufficient water vapor in the middle and low layers,coupled with the suction effect of low-level convergence and high-level divergence,which lead to strong vertical upward movement,and the middle and low layers θvalue tends to decrease with the increase of height,which were favorable conditions for the emergence and development of heavy precipitation weather.

关 键 词：强降水 影响系统 物理量场 

分 类 号：P458.121.1[天文地球—大气科学及气象学]