[1]蒋亚平,农明哲,马智,等.2021年5月桂西南一次混合强对流天气过程诊断分析[J].气象研究与应用,2022,43(03):88-92.[doi:10.19849/j.cnki.CN45-1356/P.2022.3.16]
　Jiang Yaping,Nong Mingzhe,Ma Zhi,et al.Diagnostic analysis of a mixed severe convective weather process in Southwest Guangxi in May 2021[J].Journal of Meteorological Research and Application,2022,43(03):88-92.[doi:10.19849/j.cnki.CN45-1356/P.2022.3.16]
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2021年5月桂西南一次混合强对流天气过程诊断分析()
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气象研究与应用[ISSN:1673-8411/CN:45-1356/P]

卷:
第43卷
期数:
2022年03期
页码:
88-92
栏目:
暴雨预报技术复盘总结
出版日期:
2022-09-15

文章信息/Info

Title:
Diagnostic analysis of a mixed severe convective weather process in Southwest Guangxi in May 2021
作者:
蒋亚平;  农明哲;  马智;  苏彦;  黄秋丰
崇左市气象局, 广西 崇左 532200
Author(s):
Jiang Yaping;  Nong Mingzhe;  Ma Zhi;  Su Yang;  Huang Qiufeng
Chongzuo Meteorological Bureau, Chongzuo Guangxi 532200, China
关键词:
强对流天气; 冰雹; 极端大风; 短时强降水; 桂西南
Keywords:
severe convective weather; hail; extreme gale; short-term heavy precipitation; Southwest Guangxi
分类号:
P458.12
DOI:
10.19849/j.cnki.CN45-1356/P.2022.3.16
摘要:
利用常规气象观测资料、NCEP再分析资料和雷达资料对2021年5月初发生在广西西南部的一次混合强对流天气过程进行分析。结果表明：（1）此次过程前期以冰雹、大风为主，极端性强，破坏性大，后期以短时强降水为主，强度大、局地性强、持续时间长；（2）此次过程由地面辐合线触发，辐合线在桂西南南部长时间维持，是造成多地出现持续性短时强降水天气的主要原因；（3）一定的对流抑制能量和强的垂直风切变有利于出现极端性强天气；（4）雷达回波分析表明，冰雹发生时具有明显的三体散射特征，而局地极端大风主要由下击暴流造成，短时强降水发生时，具有低质心和暖云高效率降水的雷达回波特征，且"列车效应"特征明显，有利于对流风暴的有组织发展和极端降水的发生。
Abstract:
Using conventional meteorological observation data, NCEP reanalysis data and radar data, this paper analyzed a mixed strong convective weather process that occurred in Southwest Guangxi in early May 2021. The results show that the process was dominated by hail and strong wind in the early stage with strong extremes and great destructiveness, and short-term heavy precipitation in the later stage with high intensity, strong locality and long duration. This process was triggered by the surface convergence line that maintained for a long time in the south of Southwest Guangxi, which was the main reason for the continuous short-term heavy rainfall in many places. A certain amount of convective inhibition energy and strong vertical wind shear were conducive to the occurrence of extreme weather. Radar echo analysis shows that there are obvious three body scattering characteristics when hail occurs, while local extreme winds are mainly caused by downburst. When short-term heavy precipitation occurs, the radar echo has the characteristics of low mass center and warm cloud high-efficiency precipitation, and the obvious"train effect", which are conducive to the organized development of convective storm and the occurrence of extreme precipitation.

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备注/Memo

备注/Memo:
收稿日期:2022-04-30。
基金项目:广西气象科研计划面上项目（桂气科2020M04）、崇左市气象局面上项目（崇气科202101）
作者简介:蒋亚平(1993-),男,工程师,主要从事中短期天气预报服务。E-mail:lovjiangyp@sina.com
更新日期/Last Update: 1900-01-01