2024-04-02景德镇市强降水回波与雷电分析

Analysis of heavy rainfall echoes and lightning in Jingdezhen City on April 2,2024

为了分析大暴雨天气中短时强降水与雷电分布和雷暴聚类的关系,文章使用雨量资料、天气形势、雷达拼图和“天衍”系统中雷电分布和雷暴聚类等资料,对2024-04-02大暴雨过程中短时强降水进行分析。结果表明:短时强降水中心合并使得强降水范围扩大,对短时强降水有增强作用,高空低槽、低层切变线、辐合线、西南急流、西南倒槽等天气系统促使短时强降水发生;东西走向的混合型回波带,其南侧存有≥50 dBZ的近似南北走向的对流降水回波短带;雷电分布密集区,雷暴聚类区域与短时强降水关系密切,雷暴聚类区的形成对判别雷暴的移动十分有利。研究结果为大暴雨天气中短时强降水的预警预报提供了分析依据。

In order to analyze the relationship between short-time heavy rainfall,lightning distribution and thunderstorm clustering in heavy rainstorm,this paper uses rainfall data,weather situation,radar mosaic,lightning distribution and thunderstorm clustering in the"Tianyan"system to analyze short-time heavy rainfall during the heavy rainstorm on April 2,2024.The results indicate that the merging of short-term heavy precipitation centers expands the range of heavy precipitation and enhances it.Weather systems such as high altitude trough,low level shear line,convergence line,southwest jet stream,and southwest trough promote the occurrence of short-term heavy precipitation.The mixed echo band with an east-west direction has a convective precipitation echo short band with an approximate north-south direction of≥50 dBZ on its south side.Areas with dense lightning distribution and thunderstorm clustering are closely related to short-term heavy precipitation,and the formation of thunderstorm clustering areas are very advantageous for distinguishing the movement of thunderstorms.The research results provide an analytical basis for the early warning and forecast of short-term heavy rainfall in heavy rainstorm weather.