2021年5月初福建地区一次冰雹天气过程分析  

Analysis of a hail weather process in early May 2021 in Fujian region

作　　者：崔汗青 CUI Hanqing(Mount Wuyi Meteorological Bureau,Nanping 354300,China)

机构地区：[1]福建省武夷山市气象局,福建南平354300

出　　处：《黑龙江环境通报》2024年第11期7-9,共3页Heilongjiang Environmental Journal

摘　　要：本文选择常规气象观测资料、雷达探测资料、NCEP分析资料等相关资料对2021年5月初福建一次强对流天气过程进行分析。结果显示:此次冰雹天气发生之前,副热带高压处在福建省边缘,福建上空主要受偏南暖湿气流影响,低层大气呈暖湿状态,而高层大气呈干冷状态,大气不稳定性增加,促进了冰雹天气的形成和发展。冰雹天气发生前整层大气水汽通量都属于正值,低空水汽通量辐合比较显著,在西南气流的作用,大量水汽持续向福建省南部传输,为冰雹、强降水天气的发生提供了有利水汽条件。This paper selects conventional meteorological observation data,radar detection data,NCEP analysis data and other related data to analyze a severe convective weather process in Tianjin on June 25,2020.The results show that before the occurrence of this hail weather,the subtropical high pressure was located on the edge of Fujian Province.The airspace over Fujian was mainly affected by southerly warm and humid air currents,with the lower atmosphere in a warm and humid state and the upper atmosphere in a dry and cold state.The increased atmospheric instability promoted the formation and development of hail weather.Before the hail weather,the entire atmospheric water vapor flux was positive,and the convergence of low-level water vapor flux was significant.Under the influence of southwest airflow,a large amount of water vapor continued to transfer to the southern part of Fujian Province,providing favorable water vapor conditions for the occurrence of hail and heavy rainfall.

关 键 词：冰雹天气 环流背景 物理量 福建 

分 类 号：P458.121.2[天文地球—大气科学及气象学]