7月23日齐齐哈尔一次暴雨过程分析  

Analysis of A Rainstorm Process in Qiqihar on July 23

作　　者：李雯婧 王佳宁 李萌 郭丰赫 张秋烨 Li Wen-jing(Qiqihar Meteorological Bureau,Qiqihar,Heilongjiang 161000)

机构地区：[1]齐齐哈尔市气象局,黑龙江齐齐哈尔161000 [2]黑龙江省气候中心,黑龙江哈尔滨150000 [3]黑河市气象局,黑龙江黑河164300

出　　处：《农业灾害研究》2023年第6期107-109,共3页Journal of Agricultural Catastrophology

摘　　要：利用常规观测资料、云图、雷达回波等资料,对2022年7月23日齐齐哈尔市发生的一次暴雨过程进行分析,得出以下结论:高空欧亚中高纬为两槽一脊的环流形势,齐齐哈尔受该低压槽的控制,低压槽东移加深,配合地面低压。从地面到850 hPa低层辐合明显,低层湿度好,并且存在水汽的辐合与聚集,有利于产生强降水。齐齐哈尔处于高空急流出口区的左侧高层辐散区下方。高空急流为强降水的发生与发展提供了强有力的动力条件。Based on the conventional observation data,cloud image,radar echo and other data,analyzed a rainstorm process in Qiqihar on July 23,2022,and drew the following conclusions:the upper Eurasian middle and high latitudes were the circulation situation of two troughs and one ridge.Qiqihar was controlled by the low pressure trough,and the low pressure trough moved eastward and deepens,in coordination with the ground low pressure.From the ground to 850 hPa,the low layer convergence was obvious,the low layer humidity was good,and there was convergence and accumulation of water vapor,which was conducive to the generation of strong precipitation.Qiqihar was located below the upper level divergence zone on the left of the upper jet exit zone.The upper jet provides a powerful dynamic condition for the occurrence and development of heavy precipitation.

关 键 词：暴雨 辐合 高空急流 层结不稳定 

分 类 号：P458[天文地球—大气科学及气象学]