[1]黄铭绸 黄奕丹 许乾杰 何秀恋 洪晓湘.漳州市一次梅雨期强降水过程成因分析[J].大众科技,2023,25(7):45-48.
 Analysis of the Causes of a Heavy Precipitation Process during the Rainy Season in Zhangzhou City[J].Popular Science & Technology,2023,25(7):45-48.
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漳州市一次梅雨期强降水过程成因分析()
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《大众科技》[ISSN:1008-1151/CN:45-1235/N]

卷:
25
期数:
2023年7
页码:
45-48
栏目:
资源与环境
出版日期:
2023-07-20

文章信息/Info

Title:
Analysis of the Causes of a Heavy Precipitation Process during the Rainy Season in Zhangzhou City
作者:
黄铭绸1 黄奕丹23 许乾杰4 何秀恋4 洪晓湘23 
(1.福建省东山县气象局,福建 东山 363401;2.福建省漳州市气象局,福建 漳州 363000; 3.海峡气象开放实验室,福建 厦门 361012;4.福建省诏安县气象局,福建 诏安 363500)
关键词:
梅雨期强降水辐合线低空急流雷达短时临近预报
Keywords:
rainy season heavy precipitation convergence line low altitude jet radar short-term approaching forecast
文献标志码:
A
摘要:
利用常规观测资料对2020年5月19日发生在漳州市梅雨期一次强降水过程进行分析,得出此次过程是由近地层辐合线主导的局地性强降水,前期强盛的低空急流源源不断地提供较丰富的湿静力能量,辐合线的存在造成浅薄冷暖空气交汇,触发不稳定能量释放和强降水的发生。通过雷达分析得出此次过程属于典型的低质心热带海洋性降水回波,后向传播机制是导致回波在漳浦县维持较长时间的主要原因,双偏振雷达资料表明该回波以大雨滴为主,用于雨强估测效果较好。CMA-上海模式对弱天气尺度强迫的对流性强降水有一定的体现作用,在主观预报难以判断此类强降水时,加强潜势分析和回波监测是增加短时临近预报提前量的有效应对手段。
Abstract:
Using conventional observation data, an analysis is conducted on a heavy precipitation process that occurred during the rainy season in Zhangzhou city on May 19, 2020. It is concluded that this process is a localized heavy precipitation dominated by the convergence line of the near surface layer. The strong low altitude jet in the early stage continuously provides abundant wet static energy, and the existence of the convergence line causes the intersection of shallow cold and warm air, triggering the release of unstable energy and the occurrence of heavy precipitation. Through radar analysis, it is concluded that this process belongs to a typical low centroid tropical oceanic precipitation echo, and the backward propagation mechanism is the main reason for the echo to maintain for a long time in Zhangpu county. Dual polarization radar data shows that the echo is mainly composed of large raindrops, which has a good effect in estimating rainfall intensity. The CMA-Shanghai model has a certain manifestation effect on convective heavy precipitation forced by weak weather scales. When subjective forecasting is difficult to determine such heavy precipitation, strengthening potential analysis and echo monitoring is an effective response method to increase the short-term approaching forecast advance.

参考文献/References:

[1] 赵玉春,李泽椿,王叶红,等. 2006年6月5~8日梅雨锋上中尺度对流系统引发福建北部暴雨的诊断分析[J]. 大气科学,2008(3): 598-614.[2] 刘彩虹,陈优平,曾令建. 浙江一次梅雨期暴雨过程中尺度特征及成因分析[J]. 浙江气象,2019,40(4): 16-21.[3] 黄文娟,陈永林,束炯. 2015年江淮流域中尺度涡旋梅雨期暴雨过程的诊断分析[J]. 气象与环境学报,2017,33(6): 25-33.[4] 刘建勇,谈哲敏,顾思南. 梅雨期暴雨系统的流依赖中尺度可预报性[J]. 大气科学,2011,35(5): 912-926.[5] 周金莲,张家国,吴涛,等. 长江中游梅雨锋极端暴雨过程中的边界层中尺度系统主要特征[J]. 气象,2022,48(8): 1007-1019.[6] 阙志萍,陈云辉,王萱. 江西一次持续性梅雨锋暴雨过程水汽特征及源地[J]. 气象与减灾研究,2022,45(2): 105-113.[7] 张雪蓉,李晓容,廖一帆,等. 水汽对梅雨期切变线大暴雨影响的数值试验[J]. 气象科学,2021,41(5): 617-630.[8] 俞小鼎. 多普勒天气雷达原理与业务应用[M]. 北京: 气象出版社,2006.

备注/Memo

备注/Memo:
【收稿日期】2022-11-10【基金项目】漳州市科技计划项目(ZZ2021J31);闽西南区域协同发展气象科技专项课题(2020MXN07)。【作者简介】黄铭绸(1975-),女,福建东山人,福建省东山县气象局工程师,从事预报预警等综合业务工作。
更新日期/Last Update: 2023-08-16