| 湖南省永州市2006年4月10日龙卷分析 |
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| 引用本文： | 唐小新,廖玉芳.湖南省永州市2006年4月10日龙卷分析[J].气象,2007,33(8):23-28. |
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| 作者姓名： | 唐小新 廖玉芳 |
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| 作者单位： | 南京大学大气科学系,210093;湖南省永州市气象台;湖南省气候中心 |
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| 基金项目： | 致谢：对中国气象局培训中心的俞小鼎教授、双牌县气象局周丽珍女士的热心指导和帮助,在此谨致诚挚的感谢和敬意. |
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| 摘 要： | 利用灾后调查资料、常规天气图及永州多普勒雷达资料,分析2006年4月10日凌晨发生在湖南省双牌县理家坪乡出现的严重风灾。结果表明:这是永州市自有气象记载以来首次确认的龙卷灾害;该龙卷为超级单体龙卷,具有非常经典的钩状回波特征;强的水平风垂直切变和热力不稳定环境促使了超级单体中的中气旋的产生,中低层的辐合最终在中气旋中形成龙卷。
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| 关 键 词： | 龙卷 超级单体 钩状回波 涡度 |
| 收稿时间： | 2006/12/4 0:00:00 |
| 修稿时间： | 2006-12-042007-07-06 |
An Analysis of a Tornado in Yongzhou, Hunan Province |
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| Tang Xiaoxin and Liao Yufang.An Analysis of a Tornado in Yongzhou, Hunan Province[J].Meteorological Monthly,2007,33(8):23-28. |
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| Authors: | Tang Xiaoxin and Liao Yufang |
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| Institution: | 1. Atmospheric Science department of Nanjing University. Nanjing 210093, China;Meteorological Observatory of Yongzhou city, Hunan Province; 2. Climate Center of Hunan Meteorological bureau. |
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| Abstract: | The severe wind which took place in the morning of April 10,2006 in Lijiaping town,Shuangpai County,Hunan Province was analyzed based on the post-disaster inspection data,conventional weather data and Yongzhou Doppler radar data.It shows that the severe wind was the first confirmed tornado in Yongzhou City in normal meteorological records.It was a supercell tornado,and had classical tornado hook characteristics in the radar base reflectivity.The strong vertical wind shear and thermodynamic instability resulted in a meso-cyclone in the supercell.The convergence of on low and middle-level atmosphere in the mesocyclone resulted in the tornado finally. |
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| Keywords: | tornado supercell hook echo vorticity equation |
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