[1]贾显锋,刘蕾.一次副高边缘特大暴雨的成因分析[J].气象研究与应用,2019,40(02):12-15.
 Jia Xianfeng,Liu Lei.Cause Analysis of a Torrential Rain on the Edge of Subtropical High[J].Journal of Meteorological Research and Application,2019,40(02):12-15.
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一次副高边缘特大暴雨的成因分析()
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气象研究与应用[ISSN:1673-8411/CN:45-1356/P]

卷:
第40卷
期数:
2019年02期
页码:
12-15
栏目:
天气气候
出版日期:
2019-06-30

文章信息/Info

Title:
Cause Analysis of a Torrential Rain on the Edge of Subtropical High
作者:
贾显锋 刘蕾
柳州市气象局, 广西 柳州 545001
Author(s):
Jia Xianfeng Liu Lei
Liuzhou Meteorological Service, Liuzhou Guangxi 545001
关键词:
特大暴雨副热带高压地面辐合线
Keywords:
a severe rainstormsubtropical highsurface concentrated line
分类号:
DH
摘要:
利用常规资料,NCEP/NCAR的1°×1°每6h再分析资料和柳州多普勒雷达资料,对2017年7月9-10日发生在柳州一次副高边缘特大暴雨进行了分析。结果表明:高空槽、低空急流以及地面辐合线是这次过程的主要影响系统,副高脊线的稳定维持,使得暴雨区主要出现在柳州中北部;孟加拉湾与南海源源不断的水汽输送为这次暴雨提供了充分的水汽条件;地面弱冷空气的侵入增强了柳州上空的不稳定度,并在地面形成中尺度辐合线触发暴雨产生。地面中尺度辐合线的长久维持为强降水提供了动力抬升的条件,有利于强降水的维持;低质心、高效率的“列车效应”回波反复经过柳州市北部三县,造成了特大暴雨。
Abstract:
By using the conventional materials, NCEP/NCAR per 6h reanalysis data and doppler radar data, a severe rainstorm that occurred on the edge of subtropical high in Liuzhou from July 9 to 10, 2017 was analyzed. The results showed that the high trough, low jet and ground convergence line were the main influencing systems of this process. The stable ridge line of subtropical high made the rainstorm area mainly appear in the north-central part of Liuzhou. Continuous flow of water vapor from the bay of Bengal and the south China sea provided adequate vapor conditions for the rainstorm. The invasion of weak cold air on the ground enhanced the instability over Liuzhou, and the long-term maintenance of mesoscale convergence line provided the conditions for dynamic uplift of heavy precipitation. The "train effect" echoes with low centroid and high efciency passed through three counties in the north of Liuzhou City repeatedly, resulting in heavy rainstorms.

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备注/Memo

备注/Memo:
收稿日期:2019-01-10。
基金项目:广西柳州市科技攻关与新产品试制项目(2018BK10501)
作者简介:贾显锋(1969-),男,广西融水人,高级工程师,主要从事预报服务管理和研究工作。E-mail:Jone7318@126.com
更新日期/Last Update: 1900-01-01