[1]欧坚莲,汤中明,黄恩恩,等.2014-2020年梧州市短时大暴雨雷达回波特征分析[J].气象研究与应用,2022,43(01):20-25.[doi:10.19849/j.cnki.CN45-1356/P.2022.1.04]
　Ou Jianlian,Tang Zhongming,Huang Enen,et al.Analysis of radar echo characteristics of short-term rainstorm in Wuzhou City from 2014 to 2020[J].Journal of Meteorological Research and Application,2022,43(01):20-25.[doi:10.19849/j.cnki.CN45-1356/P.2022.1.04]
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2014-2020年梧州市短时大暴雨雷达回波特征分析()
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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01期
页码:
20-25
栏目:
研究论文
出版日期:
2022-03-25

文章信息/Info

Title:
Analysis of radar echo characteristics of short-term rainstorm in Wuzhou City from 2014 to 2020
作者:
欧坚莲1;  汤中明2;  黄恩恩1;  蒋玉凤1
1. 梧州市气象局, 广西 梧州 543002;
2. 百色市气象局, 广西 百色 533000
Author(s):
Ou Jianlian1;  Tang Zhongming2;  Huang Enen1;  Jiang Yufeng1
1. Wuzhou Meteorological Bureau, Wuzhou Guangxi 543002, China;
2. Baise Meteorological Bureau, Baise Guangxi 533000, China"
关键词:
短时大暴雨; 雷达产品; 演变分析; 临近预报
Keywords:
short-time rainstorm; radar products; evolution analysis; nowcasting
分类号:
P412.25
DOI:
10.19849/j.cnki.CN45-1356/P.2022.1.04
摘要:
利用梧州市多普勒天气雷达和自动气象站降水资料,分析2014-2020年发生在梧州市的短时大暴雨天气过程的雷达回波特征。结果表明:(1)大暴雨与45dBz以上的强回波和持续时间密切相关,发生短时大暴雨时,最大反射率因子超过50dBz,45dBz以上的强回波持续时间基本在50min以上;(2)质心高度在2km以下,且维持时间10min以上的低质心强回波容易形成暴雨;(3)强回波和辐合区相结合易形成大暴雨,与逆风区辐合区关系最密切,占6成多;(4)强回波带和列车效应相结合易形成大暴雨:回波带上单体或回波团的移动方向和回波带走向一致易形成大暴雨;(5)回波顶高和垂直累积液态含水量产品出现大值的时间对大暴雨预报预警有指示意义。
Abstract:
Based on the Doppler weather radar and precipitation data of automatic weather station in Wuzhou City,the radar echo characteristics of short-term rainstorm weather processes in Wuzhou City from 2014 to 2020 were analyzed.The results show that (1) the rainstorm is closely related to the strong echo and duration above 45dBz.When the short-term rainstorm occurred,the maximum reflectivity factor exceeded 50dBz,and the strong echo duration above 45dBz was basically over 50 min.(2) The low centroid strong echo with centroid height less than 2km and maintenance time more than 10 min is easy to form rainstorm.(3) The combination of strong echo and convergence area is easy to form rainstorm,which is most closely related to the convergence area of upwind area,accounting for more than 60%.(4) The combination of strong echo band and train effect is easy to form rainstorms:the moving direction of monomer or echo group on the echo band is consistent with the direction of the echo band,which is easy to form rainstorms.(5) The echo top height and the time when the vertically accumulated liquid water content product has a large value are instructive to the prediction and early warning of rainstorms.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2021-10-13。
基金项目:梧州市气象局暴雨研究创新团队项目(梧气科Z2021005、Z2021006)和2021年梧州市气象局山洪地质灾害防治气象保障工程建设项目
作者简介:欧坚莲(1968-),女,高级工程师,主要从事天气预报与服务工作。E-mail:283441945@qq.com
更新日期/Last Update: 1900-01-01