2022年4月下旬江西地区一次大范围强对流天气过程分析  

Analysis of A Largescale Strong Convective Weather Process in Jiangxi Region in Late April 2022

作　　者：程晨 李昕 Cheng Chen(Nanfeng Meteorological Bureau,Jiangxi Province,Nanfeng,Jiangxi 344500)

机构地区：[1]江西省南丰县气象局,江西南丰344500

出　　处：《农业灾害研究》2023年第9期151-153,共3页Journal of Agricultural Catastrophology

摘　　要：选择常规气象观测资料、雷达探测资料、NCEP分析资料等相关资料分析了2022年4月下旬江西地区一次大范围强对流天气过程。结果显示:此次江西省强对流天气过程是在高空槽、西南急流、中低层切变线、地面气旋等天气系统共同作用下产生的。“上干下湿”和低层辐合的环流形势为此次大风、雷暴天气的形成提供了有利环流背景。高空分流区分布在江西北部区域,该地区还位于低槽前部,形成高空辐散、低空辐合的形势特征,在低空西南急流的作用下,有许多水汽和不稳定能量持续向江西输入,推动了大风、暴雨天气的形成。A large-scale severe convective weather process in Jiangxi Province in late April 2022 was analyzed using conventional meteorological observation data,radar detection data,NCEP analysis data,and other related data.The results showed that the severe convective weather process in Jiangxi Province was generated under the joint action of weather systems such as the high trough,southwest jet,middle and low level shear lines,and surface cyclones.The circulation pattern of“upper dry and lower wet”and low-level convergence provided a favorable circulation background for the formation of this strong wind and thunderstorm weather.The upper level distributary area was distributed in the northern area of Jiangxi Province,which was also located in the front of the low trough,forming the characteristics of the situation of upper level divergence and lower level convergence.Under the effect of the lower level southwest jet,there were many water vapor and unstable energy continuously entering Jiangxi,promoting the formation of gale and rainstorm weather.

关 键 词：强对流天气 环流形势 不稳定层结 江西 

分 类 号：P463[天文地球—大气科学及气象学]