铜鼓冰雹回波特征分析  

Analysis of echo characteristics of hail in Tonggu

作　　者：刘娟 李琪珂 徐紫彤 李正陈 张王鹏 陈凫 Liu Juan;Li Qike;Xu Zitong;Li Zhengchen;Zhang Wangpeng;Chen Fu(Tonggu County Meteorological Bureau,Tonggu 336200)

机构地区：[1]铜鼓县气象局,铜鼓336200

出　　处：《气象水文海洋仪器》2024年第5期33-35,40,共4页Meteorological,Hydrological and Marine Instruments

基　　金：宜春市科技计划项目“铜鼓雷暴大风回波特征与监测预警研究”(YC2023ZDJH)资助。

摘　　要：研究冰雹回波特征是冰雹监测预警的关键,文章使用铜鼓国家站气象数据、“天衍”雷达拼图等数据,采用雷达气象学原理及分析方法,对铜鼓冰雹个例进行分析。结果表明:铜鼓地区2013-2024年出现4次冰雹(雹径≥1 cm);冰雹天气多伴有500 hPa低槽、850 hPa切变、西南急流及925 hPa超低空急流等天气系统;铜鼓冰雹回波类型为超级单体;组合反射率图上强回波≥60 dBZ或有更强的回波核存在;垂直剖面图上≥60 dBZ强回波发展高度超过8 km;CAPPI在9 km高度可见≥60 dBZ强回波,回波垂直厚度达8 km~9 km;廓线时序可见冰雹超级单体强回波逐时演变过程。研究结果为监测预警铜鼓地区强天气提供了分析依据。Studying the characteristics of hail echoes is key to monitoring and early warning.This article uses meteorological data from Tonggu National Station and"Tianyan"radar mosaic data,and applies radar meteorology principles and analysis methods to analyze individual cases of hail in Tonggu.The results showed that there were 4 hail events(hail diameter≥1 cm)in Tonggu area from 2013 to 2024.Hail weather is often accompanied by weather systems such as 500 hPa trough,850 hPa shear,southwest jet stream,and 925 hPa ultra-low altitude jet stream.The echo type of hail in Tonggu is supercell.Strong echoes≥60 dBZ or the presence of stronger echo nuclei on the combined reflectance map.The development height of strong echoes of≥60 dBZ on the vertical profile exceeds 8 km.CAPPI shows strong echoes of≥60 dBZ at a height of 9 km,with a vertical thickness of 8 km to 9 km.The contour time series shows the hourly evolution process of strong echoes from hail supercells.The research results provide analytical basis for monitoring and warning of severe weather in Tonggu area.

关 键 词：冰雹 雷达拼图 回波特征 

分 类 号：P458.12[天文地球—大气科学及气象学]