[1]梁岱云,张丁丁,苏兆达,等.南宁市极端暴雨气候背景及天气学分型初探[J].气象研究与应用,2022,43(04):66-71.[doi:10.19849/j.cnki.CN45-1356/P.2022.4.11]
　Liang Daiyun,Zhang Jingding,Su Zaoda,et al.Preliminary study on climatic background and weather classification of extreme rainstorm in Nanning city[J].Journal of Meteorological Research and Application,2022,43(04):66-71.[doi:10.19849/j.cnki.CN45-1356/P.2022.4.11]
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南宁市极端暴雨气候背景及天气学分型初探()
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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04期
页码:
66-71
栏目:
研究论文
出版日期:
2022-12-15

文章信息/Info

Title:
Preliminary study on climatic background and weather classification of extreme rainstorm in Nanning city
作者:
梁岱云;  张丁丁;  苏兆达;  冯艺昕
南宁市气象局, 南宁 530029
Author(s):
Liang Daiyun;  Zhang Jingding;  Su Zaoda;  Feng Yixin
Nanning Meteorological Bureau, Nanning 530029, China
关键词:
极端暴雨; 气候背景; 天气学分型; 南宁市
Keywords:
extreme rainstorm; climate background; synoptic model; Nanning city
分类号:
P458
DOI:
10.19849/j.cnki.CN45-1356/P.2022.4.11
摘要:
采用气象行业标准(QX/T 303-2015)方法定义南宁市极端暴雨阈值,分析其气候背景,并按主要影响系统将选取的16个过程进行天气学分型,利用NCEP再分析资料对各分型的平均场基本特征进行了分析。结果表明:(1)南宁市极端暴雨阈值为190.9mm·d-1,主要出现在7-8月。(2)极端暴雨发生的年份94%均出现ENSO事件。(3)南宁市极端暴雨过程按影响系统可分为两类:台风型和切变线低涡型。(4)台风型最多为第Ⅱ类(中路)路径,季风、冷空气和两环副热带高压之间低值带的稳定维持是台风型极端暴雨的重要因素之一。(5)切变线低涡型中,副热带高压稳定使切变线或低涡移动缓慢是导致极端暴雨的重要因素。
Abstract:
According to the definition of extreme rainstorm threshold in the meteorological industry standard (QX/T 303-2015), the extreme rainstorm threshold in Nanning was determined. The climate background of extreme rainstorms was analyzed, and the selected 16 extreme events were classified into different weather types according to the main influencing system, and the basic characteristics of the mean field for each type were analyzed using NCEP reanalysis data. The result showed that:(1)The threshold value of extreme rainstorms in Nanning was 190.9mm per day, which mainly occurred in July and August.(2)ENSO events occurred in 94% of the years when extreme rainstorms occurred.(3)The extreme rainstorm events in Nanning were divided into two categories according to the influence system:typhoon type and the shear-line low-vortex type.(4)The typhoon type was usually the second type (middle route) moving track, and the stable maintenance of monsoon, cold air, and the low-pressure zone between two subtropical anticyclone highs was one of the important factors causing extreme rainstorm of typhoon type.(5)In the shear-line low-vortex type, the slow movement of the shear line or low vortex due to the stability of the subtropical high was an important factor leading to an extreme rainstorm.

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备注/Memo

备注/Memo:
收稿日期:2022-08-10。
基金项目:广西气象局科研项目"首府南宁极端降水预报技术及应对措施研究"(桂气科2022M13)
作者简介:梁岱云(1972-),女,高级工程师,主要从事灾害性天气预报与研究。E-mail:1037314711@qq.com
更新日期/Last Update: 1900-01-01