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| 豫西突发性暴雨成因 | |
| 引用本文： | 王新敏,张霞,范学峰,何立富.豫西突发性暴雨成因[J].气象科技,2010,38(1):15-20. |
| 作者姓名： | 王新敏 张霞 范学峰 何立富 |
| 作者单位： | 1. 河南省气象台,郑州,450003 2. 河南省气象局,郑州,450003 3. 国家气象中心,北京,100081 |
| 摘 要： | 利用常规观测、FY-2C气象卫星资料及NCEP/NCAR再分析资料,对2007年7月28～30日豫西卢氏县引发历史罕见山洪暴雨的进行了天气动力学和中尺度分析。结果表明:西太平洋副热带高压增强与贝加尔湖高压叠加形成阻塞形势,其西侧低空急流携带大量水汽与较强的锋生场交汇在豫西,导致了这次极端暴雨事件的发生;大尺度强斜升运动区中,低层存在一个条件性对称不稳定机制,引发中β云团生成、合并、发展,从而造成暴雨。 |
| 关 键 词： | 暴雨山洪 湿位涡 湿Q矢量锋生函数 条件性对称不稳定 中β云团 |
| 收稿时间： | 2009/4/27 0:00:00 |
| 修稿时间： | 9/2/2009 12:00:00 AM |
Cause Study of Abrupt Rainstorm in Western Henna |
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| Wang Xinmin,Zhang Xi,Fan Xuefeng and He Lifu.Cause Study of Abrupt Rainstorm in Western Henna[J].Meteorological Science and Technology,2010,38(1):15-20. | |
| Authors: | Wang Xinmin Zhang Xi Fan Xuefeng and He Lifu |
| Institution: | Wang Xinmin1 Zhang Xia1 Fan Xuefeng2 He Lifu3(1 Henan Provincial Meteorological Office,2 Henan Provincial Weather Bureau,Zhengzhou 450003,3 National Meteorological Center,Beijing 100081) |
| Abstract: | The conventional observation,weather satellite,and NCEP/NCAR reanalysis data are used to perform the dynamic and mesoscale analyses of the rare mountain flood in history in Lushi County in the western Henna Province from 28 to 30 July in 2007. The results show that the sub-tropic high over the West Pacific enhanced and overlapped on the Begal high and thus resulted in a blocking pattern; the low-level jet with a large amount of water vapor converged around the strong frontogenesis field in the west of Henna... |
| Keywords: | rain-induced mountain flood wet potential vorticity Q vector wet frontogenesis function conditional symmetric instability meso-β cloud |
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