| 冷空气侵入的暴雨过程物理量场变化与诊断分析 |
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| 引用本文： | 罗冰.冷空气侵入的暴雨过程物理量场变化与诊断分析[J].气象与减灾研究,2007,30(1):24-29. |
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| 作者姓名： | 罗冰 |
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| 作者单位： | 江西省气象局,江西,南昌,330046 |
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| 基金项目： | 国家自然科学基金资助项目(编号:4002850340333025)，江苏省自然科学基金资助项目(编号:BK2005081BK99020)，2005年江苏省博士点专项科研基金资助项目(编号:20050284035) |
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| 摘 要： | 通过对近年的几次有低层冷空气侵入的暴雨天气过程进行数值模拟和诊断分析,发现很多暴雨天气过程都与冷空气侵入有密切关系,连续暴雨过程是在较好的水汽条件和不稳定层结条件下发生的,K指数、Q矢量辐合、螺旋度、水汽通量辐合、涡度和上升速度等物理量大值区的范围和演变趋势,同暴雨范围及演变趋势基本一致;暴雨区上空有高位涡柱存在,并有自低层到高层的高位涡上传。
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| 关 键 词： | 冷空气 暴雨 物理量场 分析 |
| 文章编号： | 1007-9033（2007）01-0024-06 |
| 修稿时间： | 2006-11-02 |
Analysis on Change and Diagnose of Physical Parameter Field during Heavy Rainfall Course from Cool Air in Jiangxi |
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| LUO Bing.Analysis on Change and Diagnose of Physical Parameter Field during Heavy Rainfall Course from Cool Air in Jiangxi[J].Meteorology and Disaster Reduction Research,2007,30(1):24-29. |
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| Authors: | LUO Bing |
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| Institution: | Jiangxi Provincial Weather Bureau, Nanchang 330046, China |
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| Abstract: | Through the numerical simulation and diagnose analysis on several courses of heavy rainfall from low cool air invading in recent years, we found that the high value area and changing tendency of K Index, Q direction vector convergence, spiral degree, water vapor convergence, vorticity and ascending speed etc. are similar, storm area and changing tendency kept consistent. There existed high vortex volume on the top of heavy rainfall area, and high position vortex ascended from low layer to high layer. |
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| Keywords: | Cool air Heavy rainfall Numerical simulation Analysis |
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