双偏振雷达产品在梧州市一次罕见冰雹超级单体中的应用

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Abstract In response to a rare hail supercell weather process that occurred in Wuzhou City,Guangxi on the afternoon of April 22,2022,this article analyzed its weather background and environmental conditions using conventional meteorological data.Through a detailed analysis of the polarization parameters of Wuzhou Sband dual polarization radar,the results showed that this process was jointly organized and triggered by a highaltitude trough,a strong southwest jet stream,a ground convergence line,and an abnormal 3hour negative pressure center,and belonged to a lowlevel warm advection driven strong convective weather process in southern China.The sounding map of Wuzhou shows strong vertical wind shear,strong thermal instability,and strong convective effective potential energy,providing thermal and dynamic instability conditions for severe convective weather.The hail supercell exhibits distinct characteristics of three body scattering spikes,sidelobe echoes,and hook shaped echoes on the basic reflectance map,and a mesocyclone appears on the corresponding velocity map.The radial profile of the reflectivity factor exhibits a typical suspended echoBWERecho wall structure,with the center of the convective strong cell extending beyond the -20 ℃ layer height.The typical dual polarization characteristics of hail are characterized by a reflectivity factor greater than 65 dBZ,a correlation coefficient less than 0.85,and the presence of voids in the differential phase shift rate,resulting in negative differential reflectivity.A differential reflectance arc appears in the region with a high gradient of lowlevel reflectance factors,and a differential reflectance column appears vertically.

Key words： dualpolarization radar hail supercell

Received: 10 September 2024

ZTFLH:	P415.2
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	Articles by authors
	Sun Jingwen
	Chen Feisheng
	Lu Weiping
	Chen Meiling
	Huang Enen
	Jiang Yu

Cite this article:

Sun Jingwen,Chen Feisheng,Lu Weiping等. Application of dualpolarization radar products in a rare hail supercell in Wuzhou[J]. Meteorological Hydrological and Marine Instrument, 2025, 42(5): 130-134.

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http://www.qxswhy.com/EN/ OR http://www.qxswhy.com/EN/Y2025/V42/I5/130

[1]	刘懿枢,马中元,余剑浩,等.“2022316”一次超级单体冰雹回波特征分析 [J].气象水文海洋仪器,2022,39 (3):1518.
[2]	邱双.雅安一次极端强降水的超级单体风暴特征及成因分析 [J].中低纬山地气象,2022,46 (2):5562.
[3]	饶云花,马中元,陈鲍发,等.丰城冰雹天气超级单体回波特征分析 [J].气象水文海洋仪器,2022,39 (1):4143,47.
[4]	李曦.一次强降水超级单体风暴的动力特征分析 [J].中低纬山地气象,2020,44 (5):3240.
[5]	廖玉芳,俞小鼎,郭庆.一次强对流系列风暴个例的多普勒天气雷达资料分析 [J].应用气象学报,2003(6):656664.
[6]	王秀明,钟青,韩慎友.一次冰雹天气强对流(雹)云演变及超级单体结构的个例模拟研究 [J].高原气象,2009,28 (2):352365.
[7]	张弘豪,陈时东,郭泽勇,等.双偏振降水估测算法在三种降水中的性能评估 [J].广东气象,2022,44 (5):15.
[8]	杜牧云,刘黎平,胡志群,等.双线偏振多普勒雷达资料质量分析 [J].气象学报,2013,71 (1):146158.
[9]	曹舒娅,孙伟,韦芬芬,等.双偏振雷达在江苏“7.6”降雹过程中的应用分析 [J].大气科学学报,2021,44 (4):549557.
[10]	陈瑞敏,赵孝伟,于海磊,等.一次长生命史超级单体风暴的雷达观测特征 [J].暴雨灾害,2021,40 (4):419429.
[11]	贺晓露,杨涛,李格,等.鄂北一次超级对流单体的双偏振雷达特征分析 [J].气象科技,2021,49 (6):913922.
[12]	刘红亚,杨引明,张晶,等.一次冰雹天气的WSR88D双偏振雷达特征分析 [J].气象与环境科学,2020,43 (2):110.
[13]	何东坡,周永水,周文钰,等.贵州北部一次冰雹天气的双偏振特征分析 [J].中低纬山地气象,2022,46 (3):1624.
[14]	章丽娜.Tlnp图在天气分析和预报中的应用[M].北京:气象出版社,2022.
[15]	刁秀广,张磊,孟宪贵,等.两次强降水风暴双偏振参量特征分析 [J].海洋气象学报,2020,40 (3):2736.
[16]	吴举秀,魏鸣,刁秀广,等.强降雹超级单体风暴湍流结构的双偏振回波特征分析 [J].高原气象,2023,42 (1):139149.
[17]	刁秀广,朱君鉴,黄秀韶,等.VIL和VIL密度在冰雹云判据中的应用 [J].高原气象,2008,27(5):11311139.