一次“多单体风暴”雷达回波特征分析  

Analysis of radar echo characteristics of a"multi cell storm"

作　　者：陈凤英 黄龙飞 计桂平 陈鲍发 Chen Fengying;Huang Longfei;Ji Guiping;Chen Baofa(Jingdezhen Meteorological Bureau,Jingdezhen 333000)

机构地区：[1]景德镇市气象局,景德镇333000

出　　处：《气象水文海洋仪器》2025年第1期63-66,共4页Meteorological,Hydrological and Marine Instruments

基　　金：景德镇市科技计划项目(20234SF015);2022年景德镇市科技计划项目(2022SF003);2022年江西省气象局面上项目(JX2022M03)资助。

摘　　要：为了更好地监测和识别冰雹云,文章使用雷达资料等,采用雷达气象学原理及分析方法,对2023-03-22江西南部大冰雹天气过程进行分析。结果表明:大冰雹直径最大超过5 cm,造成较严重冰雹危害;大冰雹是“多单体风暴”所致;风场由低层相对风向随着高度升高顺时针旋转,暖平流特征明显;“多单体风暴”中超级单体风暴闪电频繁,闪电频次高峰时间提前于强回波面积高峰;出现冰雹后,强回波面积快速减小,但回波强度组合反射率可以保持一段时间。希望研究结果能为江西春季冰雹天气的识别与预警提供分析依据。In order to better monitor and identify hail clouds,radar data and other methods were used to analyze the hail weather process in southern Jiangxi on March 22,2023,based on the principles and analysis methods of radar meteorology.The results indicate that hail with a maximum diameter exceeding 5 cm can cause severe hail damage.Large hailstones are caused by"multi cell storms".The wind field rotates clockwise with increasing altitude from the lower relative wind direction,exhibiting distinct warm advection characteristics.In the"multi-cell storm",supercell storms have frequent lightning,and the peak time of lightning frequency is earlier than the peak of strong echo area.After the occurrence of hail,the area of strong echoes rapidly decreases,but the combined reflectivity of echo intensity can be maintained for a period of time.It is hoped that the research results can provide analytical basis for the identification and early warning of hail weather in spring in Jiangxi.

关 键 词：冰雹 多单体风暴 超级单体 回波特征 

分 类 号：P458.3[天文地球—大气科学及气象学]