南昌2024-04-13冰雹回波与闪电特征分析  

Analysis of hail echoes and lightning characteristics in Nanchang on April 13,2024

作　　者：邓佳蜂 周洁晨 林靖 Deng Jiafeng;Zhou Jiechen;Lin Jing(Jiangxi Provincial Climate Center,Nanchang 330096;Key Laboratory of Lightning,China Meteorological Administration,Beijing 100081;Heyuan Meteorological Bureau,Heyuan 517000)

机构地区：[1]江西省气候中心,南昌330096 [2]中国气象局雷电重点开放实验室,北京100081 [3]河源市气象局,河源517000

出　　处：《气象水文海洋仪器》2024年第4期91-94,共4页Meteorological,Hydrological and Marine Instruments

基　　金：国家自然科学基金项目(41975001);江西省气象局重点科研项目(JX2022Z04);江西省气象局面上项目(JX2021M10);中国气象局雷电重点开放实验室开放课题(2023KELL-B003)资助。

摘　　要：为了更好地监测预警南昌市冰雹天气,使用“天衍综合气象观测质量控制与产品业务系统”中雷达回波及雷电等资料,对2024-04-13南昌市一次冰雹天气过程的闪电特征进行分析。结果表明:1 h和3 h雷暴密度区能有效监视超级单体雷暴分布,6 h和12 h雷暴密度区能反映超级单体移动路径的时序分布;当雷暴聚类与雷暴密度大值区重叠时,最易发生强天气;在超级单体发展旺盛期,伴随密集的雷电,并在移动中不断变化;超级单体回波组合反射率≥60 dBZ(具有回波核)、垂直累积液态水含量≥60 kg/m^(2)、伴随10 min密集闪电、雷暴聚类与雷暴密度重叠是判断超级单体出现冰雹的特征。研究结果为南昌市超级单体冰雹事件的预警预报提供分析依据。In order to better monitor and warn of hail weather in Nanchang City,the lightning characteristics of a hail weather process in Nanchang City from April 13,2024 were analyzed by using radar echoes and lightning data from the Tianyan Comprehensive Meteorological Observation Quality Control and Product Business System.The results show that the 1 h and 3 h thunderstorm density zones can effectively monitor the distribution of supercell thunderstorms,while the 6 h and 12 h thunderstorm density zones can reflect the temporal distribution of supercell movement paths.When thunderstorm clustering overlaps with the high value range of thunderstorm density,strong weather is most likely to occur.During the development and peak periods of supercells,there are dense thunderstorms and constantly during movement.The characteristics that determine the occurrence of hail in a supercell include a combined reflectivity of echo≥60 dBZ(with echo core),the vertically accumulated liquid water content≥60 kg/m^(2),accompanied by 10 minutes of dense lightning,thunderstorm clustering,and overlapping thunderstorm density.It is hoped that research results can provide an analytical basis for the early warning and prediction of supercell hail events in Nanchang City.

关 键 词：南昌冰雹 雷暴密度 雷暴聚类 回波特征 

分 类 号：P458.3[天文地球—大气科学及气象学]