[1]陈婧 李汉菁 林珠应.2018年3月19～20日福建省暴雨过程成因分析[J].现代农业研究,2018,(09):83-85.
　Chen Jing Li Hanjing Lin Zhuying.Cause analysis of rainstorm process in Fujian Province on 19~20 March 2018[J].Modern Agricultural Research,2018,(09):83-85.
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2018年3月19～20日福建省暴雨过程成因分析
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《现代农业研究》[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2018年09期
页码:
83-85
栏目:
推广与实践
出版日期:
2018-09-07

文章信息/Info

Title:
Cause analysis of rainstorm process in Fujian Province on 19~20 March 2018
作者:
陈婧 李汉菁 林珠应
福建省福州市长乐区气象局
Author(s):
Chen Jing Li Hanjing Lin Zhuying
Meteorological Bureau of Changle District, Fuzhou City, Fujian Province, Changle
关键词:
春季暴雨; 西南急流; 锋面; 短时强降水; 飑线
Keywords:
spring torrential rain;  southwest jet;  front;  short time heavy rainfall;  squall line
摘要:
春季暴雨常由暖区降水和锋面降水结合而成，对流性明显，对春耕生产和人员安全有较 大影响。本文应用地面加密观测资料、常规探测资料和雷达回波资料，对2018 年3 月19～20 日 福建省暴雨过程的环流形势背景、中尺度特征和物理量场进行分析。结果表明：本次暴雨是一场 暖区降水和锋面降水结合的暴雨过程。高低空西南急流充沛的水汽输送和不稳定能量，锋面、低 层切变的辐合上升运动是形成暴雨和强对流的有利条件。冷暖空气的交汇加剧了层结不稳定和 垂直上升运动，触发福建南部飑线产生。中高层显著的正涡度发展、低层辐合高层辐散以
Abstract:
Spring rainstorm is usually formed by the combination of warm area precipitation and frontal precipitation, with obvious convection, which has a great impact on spring farming production and per? sonnel safety. In this paper, the circulation situation background, Mesoscale Characteristics and physi? cal quantity field of the heavy rain process in Fujian Province from March 19 to 20, 2008 are analyzed by using ground intensive observation data, conventional sounding data and radar echo data. The results show that the rainstorm is a rainstorm process combined with warm precipitation and frontal precipita? tion. The abundant water vapor transport and unstable energy, the convergent and upward movement of frontal and low-level shear are favorable conditions for the formation of heavy rain and strong convec? tion. The intersection of cold and warm air aggravates stratification instability and vertical upward move? ment, triggering the formation of squall line in southern Fujian. Significant positive vorticity develop? ment in the middle and upper levels, convergence in the lower level, divergence in the upper level and convective instability in the upper dry and lower humidity are conducive to exciting and releasing a large amount of unstable energy, resulting in heavy rain and severe convective weather.

参考文献/References:

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更新日期/Last Update: 2018-09-07