[1]黄滢,黄春华,刘金裕.广西一次持续性暖区暴雨特征及成因分析[J].气象研究与应用,2022,43(03):50-55.[doi:10.19849/j.cnki.CN45-1356/P.2022.3.09]
 Huang ying,Huang chunhua,Liu jinyu.Characteristics and causes of a persistent warm area rainstorm in Guangxi[J].Journal of Meteorological Research and Application,2022,43(03):50-55.[doi:10.19849/j.cnki.CN45-1356/P.2022.3.09]
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广西一次持续性暖区暴雨特征及成因分析()
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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:
50-55
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:
Characteristics and causes of a persistent warm area rainstorm in Guangxi
作者:
黄滢 黄春华 刘金裕
防城港市气象局, 广西 防城港 538001
Author(s):
Huang ying Huang chunhua Liu jinyu
Fangchenggang Meteorological Bureau, Fangchenggang Guangxi 538001, China
关键词:
暖区暴雨MCS季风列车效应地形
Keywords:
warm region rainstormMCSmonsoontrain effecttopography
分类号:
P458.121.1
DOI:
10.19849/j.cnki.CN45-1356/P.2022.3.09
摘要:
利用常规观测资料、加密观测资料、卫星雷达和美国环境预报中心(NCEP)再分析资料,基于天气动力学诊断和中尺度分析方法,对广西2019年5月25-28日暖区暴雨过程进行分析。结果表明:(1)低空急流和超低空急流输送暖湿气流;低空急流脉动是重要的触发机制;弱的高压回流和边界层入侵冷空气提供辐合抬升条件;地形中尺度辐合和抬升激发中尺度对流。(2)季风带来持续的水汽输送、不稳定能量,形成有利的环境场,高湿环境和深厚的对流不稳定层结降低了暖区暴雨对抬升条件的要求。(3) MCS为暖云结构,降水效率高;雷达回波具有低质心、后向发展、稳定少动的特征并形成列车效应。
Abstract:
Based on the methods of synoptic dynamics diagnosis and mesoscale analysis, using conventional observation data, encrypted observation data, satellite, radar and NCEP reanalysis data, a warm-area rainstorm event in Guangxi from May 25 to 28, 2019 was analyzed. The results show that:(1) the low-level jet and ultra-low-level jet transport warm moist air, and the low-level jet pulsation is an important factor triggering warm-area rainstorm. The weak high-pressure recirculation and boundary layer intrusion provide favorable convergence and uplift conditions, and the mesoscale convections are stimulated by topographic mesoscale convergence and uplift.(2) The monsoon brings continuous water vapor transport and unstable energy, forming a favorable environment field. Due to the high-humidity environment and the deep convection instability stratification, warm-area rainstorm reduces the requirement for the uplift condition.(3) MCS is a warm cloud structure with high precipitation efficiency, and its the radar echo has the characteristics of low centroid, backward development, stability and less movement, and forms a train effect.

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备注/Memo

备注/Memo:
收稿日期:2022-07-25。
基金项目:中国气象局预报员专项"2019年5月25-28日广西暖区暴雨分析"(CMAYBY2020-099)
作者简介:黄滢(1981-),女,高级工程师,理学硕士,从事暴雨方面的研究。E-mail:huangying100@sina.com
更新日期/Last Update: 1900-01-01