2021年2次初夏强降水过程对比分析  

Comparative Analysis of Two Heavy Precipitation Processes in Early Summer in 2021

作　　者：吴君涛 魏杰平 WU Jun-tao(Xiaogan Meteorol-ogical Bureau,Xiaogan,Hubei 432300)

机构地区：[1]孝感市气象局,湖北孝感432300

出　　处：《农业灾害研究》2021年第10期42-44,共3页Journal of Agricultural Catastrophology

摘　　要：利用常规观测资料、卫星观测资料和雷达资料,对孝感市2021年5月10日和5月14—15日2次强对流天气进行对比诊断分析,并结合预报服务情况进行简要回顾,旨在提高暴雨预报预警水平,提高防灾减灾能力。结果表明:2次过程前期的环流背景均有利于能量累积,同时高空槽线、中底层西南急流和切变线的存在也有助于不稳定能量的触发,形成强降水过程。但是,10日强对流天气局地性更强,强对流天气以大风为主,雨带落区有明显向北移动的轨迹;14—15日强对流天气以短时强降水为主,在雷达回波上出现了明显的列车效应,形成14日夜间持续性的强降水过程。Based on conventional observation data, satellite observation data and radar data, two severe convective weather events in Xiaogan city on May 10 and May 14-15, 2021 were compared and analyzed. The results show that the circulation background in the early stage of the two processes was conducive to the energy accumulation, and the existence of upper trough line, mid-bottom southwest jet and shear line also contributes to the triggering of unstable energy and the formation of heavy precipitation process.However, the severe convective weather on October 10 was more localized, with strong winds as the main feature, and the rain belt moved northward obviously. From 14 th to 15 th, the severe convective weather was mainly short-time heavy precipitation, and obvious train effect appeared on radar echo,forming a continuous heavy precipitation process on the night of 14 th.

关 键 词：暴雨过程 环流形势 动力条件 对流云团 对比 

分 类 号：P426.62[天文地球—大气科学及气象学]