| 武汉6·22空难下击暴流的三维数值模拟研究 |
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| 引用本文： | 孙凌峰,郭学良,孙立潭,付丹红. 武汉6·22空难下击暴流的三维数值模拟研究[J]. 大气科学, 2003, 27(6): 1077-1092. DOI: 10.3878/j.issn.1006-9895.2003.06.11 |
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| 作者姓名： | 孙凌峰 郭学良 孙立潭 付丹红 |
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| 作者单位： | 中国科学院大气物理研究所,北京,100029;解放军理工大学气象学院,南京,211101;中国科学院大气物理研究所,北京,100029;解放军理工大学气象学院,南京,211101;中国科学院大气物理研究所,北京,100029;南京气象学院环境科学系,南京,210044 |
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| 基金项目： | 国家自然科学基金资助项目40175001和中国科学院大气物理研究所知识创新工程8-4314共同资助 |
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| 摘 要： | 使用武汉实测探空资料,利用三维强风暴冰雹分档模式对2000年6月22日发生在武汉的一次引起坠机事件的下击暴流进行了模拟和分析,并与实际观测进行了比较研究,结果表明:造成此次空难的下击暴流的发生发展与大的天气背景紧密相关;模拟微下击暴流的各种主要结构和生消演变特征与实测结果吻合较好;该下击暴流产生的直接原因是冰雹的重力拖曳作用引起,其次是冰雹的融化和雨水蒸发的冷却作用.空中散度和涡度的分布与变化同下击暴流也存在密切的联系.
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| 关 键 词： | 下击暴流 数值模拟 |
| 修稿时间： | 2002-06-12 |
A Numerical Study of the Airplane Disaster-Producing Microburst on 22 June 2000 in Wuhan |
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| Sun Lingfeng,Guo Xueliang,Sun Litan and Fu Danhong. A Numerical Study of the Airplane Disaster-Producing Microburst on 22 June 2000 in Wuhan[J]. Chinese Journal of Atmospheric Sciences, 2003, 27(6): 1077-1092. DOI: 10.3878/j.issn.1006-9895.2003.06.11 |
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| Authors: | Sun Lingfeng Guo Xueliang Sun Litan Fu Danhong |
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| Abstract: | A three dimensional cloud model was used to simulate and analyze a severe microburst which caused an aircraft accident on 22 June 2000 in Wuhan The simulated results have been compared with those observed The results show the occurrence and development of the downburst producing storm are closely related to the large scale meteorological background The simulated results are very close to the observed characteristics of the downburst producing storm It is found that the downburst was primarily produced by hail loading and enhanced by melting of hail and evaporation of rain The variation of vorticity and divergence in the storm also has close relationship with the production of the downburst |
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| Keywords: | microburst numerical simulation |
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