[1]李向红,伍静,曾毓琳,等.2021年6月27日-7月4日桂东北连续暴雨成因分析[J].气象研究与应用,2022,43(03):45-49.[doi:10.19849/j.cnki.CN45-1356/P.2022.3.08]
　Li Xianghong,Wu Jing,Zeng Yulin,et al.Analysis on cause of continuous heavy rain in Northeast Guangxi from June 27 to July 4, 2021[J].Journal of Meteorological Research and Application,2022,43(03):45-49.[doi:10.19849/j.cnki.CN45-1356/P.2022.3.08]
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2021年6月27日-7月4日桂东北连续暴雨成因分析()
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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:
45-49
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:
Analysis on cause of continuous heavy rain in Northeast Guangxi from June 27 to July 4, 2021
作者:
李向红;  伍静;  曾毓琳;  张雅昕;  黎微微;  王艳兰
桂林市气象局, 广西 桂林 541001
Author(s):
Li Xianghong;  Wu Jing;  Zeng Yulin;  Zhang Yaxin;  Li Weiwei;  Wang Yanlan
Guilin Meteorological Bureau, Guilin Guangxi 541001, China
关键词:
连续暴雨; 副高; 低空急流; 脉动; 形成机制
Keywords:
continuous rainstorm; subtropical high; low level jet; pulse; formation mechanism
分类号:
P458.121.1
DOI:
10.19849/j.cnki.CN45-1356/P.2022.3.08
摘要:
利用常规观测资料、MICAPS及多源融合细网格实况和再分析资料，对2021年6月27日-7月4日桂东北连续强降水过程进行了综合分析。结果表明，桂林市西北部出现连续8d、最大累计雨量达1005mm、资源站24h累计降水突破历史极值的强降水，不仅与稳定的环流形势有关，也与地形的抬升作用密切相关；稳定且强大的副热带高压为连续性强降水提供了背景条件，副热带高压稳定维持在桂林市东南部以及低涡切变的交替影响是暴雨持续的关键；850hPa低空急流脉动以及地形的抬升作用使短时暴雨增幅；强降雨带位于850hPa辐合带和500hPa强上升区附近；强降水由强对流云团持续影响及强降水回波形成的列车效应造成。
Abstract:
Based on conventional observation data, MICAPS and multi-source fusion fine-grid factual and reanalysis data, the continuous heavy precipitation process from June 27 to July 4, 2021 is comprehensively analyzed. The results show that the northwest of Guilin city experienced heavy rainfall for 8 consecutive days, with the maximum accumulated rainfall reaching 1005mm, and the 24-hour accumulated precipitation of Ziyuan station broke through the duration extreme value. It was not only related to the stable circulation situation, but also closely related to the uplift of the terrain. The stable and strong subtropical high provided favorable background conditions for continuous heavy rainfall. The steady maintenance of subtropical high in the southeast of Guilin and the alternating influence of low vortex shear were the key to the continuous heavy rainfall. Besides, the 850hPa low-level jet pulsation and the lifting effect of topography increased the short-time rainstorm. The strong rain belt is therefore located near the 850hPa convergence zone and the 500hPa strong rising zone. The heavy precipitation is also caused by the continuous influence of the strong convective cloud and the train effect formed by the heavy precipitation echoes.

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备注/Memo

备注/Memo:
收稿日期:2022-05-16。
基金项目:广西气象科技重点项目（桂气科2022Z01）
作者简介:李向红(1966-),正研级高级工程师,主要从事暴雨形成机理研究与预报。E-mail:gllxh99@163.com
通讯作者:王艳兰,主要从事暴雨及强对流天气预报。E-mail:glqxt@163.com
更新日期/Last Update: 1900-01-01