2022年6月29—30日金华市一次降水天气过程分析  

Analysis of a Precipitation Weather Process in Jinhua City from June 29 to 30,2022

作　　者：丁发明 商开通 黄开颜 王孜澈 DING Faming;SHANG Kaitong;HUANG Kaiyan;WANG Ziche(Jindong District Meteorological Bureau,Jinhua,Zhejiang Province,321000 China)

机构地区：[1]金华市金东区气象局,浙江金华321000

出　　处：《大众科学》2024年第24期154-156,共3页China Public Science

摘　　要：利用常规观测资料、ERA5再分析资料、地面观测资料等对2022年6月29—30日出现在金华市的一次降水天气过程进行分析。结果表明:这次降水天气主要出现在高空槽前、低层切变以南,高低空表现为一致的西南气流;来自925 hPa低层处的偏东南气流直接触发对流性天气,且向该地提供充足的水汽供应,对降水天气的出现和维持均具有重要作用;有利的散度场配置,增大了金华市垂直上升运动强度,为降水天气的产生和发展提供了有利的动力抬升条件;在降水天气出现前大气层结极不稳定,充足的不稳定能量为降水天气的发生发展提供了良好的环境条件。This article analyzes a precipitation weather process that occurred in Jinhua City on June 29-30,2022,using conventional observation data,ERA5 reanalysis data,and ground observation data.The results indicate that this precipitation weather mainly occurred in front of the high-altitude trough and south of the low-level shear,with consistent southwest airflow in both high and low altitudes;The southeast airflow from the 925 hPa low layer directly triggers convective weather and provides sufficient water vapor supply to the area,playing an important role in the occurrence and maintenance of precipitation weather;The favorable divergence field configuration has increased the intensity of vertical upward movement in Jinhua City,providing favorable conditions for the generation and development of precipitation weather;The atmosphere is extremely unstable before the occurrence of precipitation weather,and sufficient unstable energy provides favorable environmental conditions for the occurrence and development of precipitation weather.

关 键 词：降水天气 环流形势 物理量场 金华市 

分 类 号：P458[天文地球—大气科学及气象学]