| 两次冷涡天气的多普勒雷达资料对比分析 |
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| 引用本文： | 彭九慧,杨庆红,王宏,吴显春,田玉艳.两次冷涡天气的多普勒雷达资料对比分析[J].气象科技,2009,37(5):545-548. |
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| 作者姓名： | 彭九慧 杨庆红 王宏 吴显春 田玉艳 |
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| 作者单位： | 河北省承德市气象局,承德,067000 |
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| 摘 要： | 运用常规天气资料和新一代天气雷达资料对2008年6月承德市两次冷涡天气过程进行对比分析发现：高空冷涡和低层中尺度切变线,是两次过程共同的影响系统,东蒙冷涡造成的强对流天气和冷涡的移动路径有关;高低空风场的配置和通气管指数可判断垂直风切变的大小;多普勒雷达基本反射率因子的形态、强度、移速、垂直结构等特征及平均径向速度场中尺度辐合线、逆风区、垂直切变和零速度线走向等对强天气的预警有较强的指示作用;垂直累积液态水含量（VIL）值的跃增和剧减对强天气预警有明显的指示意义,VIL值在对流发展阶段逐渐增长,随强天气开始对流减弱而减小。
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| 关 键 词： | 冷涡天气 中尺度切变线 径向速度 VIL |
| 收稿时间： | 2008/12/25 0:00:00 |
| 修稿时间： | 5/4/2009 12:00:00 AM |
Comparative Analysis of Doppler Weather Radar Data from Two Cold Vortex Weather Events |
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| Peng Jiuhui,Yang Qinghong,Wang Hong,Wu Xianchun and Tian Yuyan.Comparative Analysis of Doppler Weather Radar Data from Two Cold Vortex Weather Events[J].Meteorological Science and Technology,2009,37(5):545-548. |
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| Authors: | Peng Jiuhui Yang Qinghong Wang Hong Wu Xianchun and Tian Yuyan |
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| Institution: | Chengde Meteorological Bureau;Hebei Province;Chengde 067000 |
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| Abstract: | By means of conventional weather data and new generation weather radar data in June 2008 at Chengde,two cold-vortex weather events are compared and analyzed.It is found that an upper-level cold vortex and a lower-level mesoscale shear line are the common influencing systems;severe convective weather caused by the eastern-Mongolia cold vortex is related to the moving track of the cold vortex;the configuration of the wind fields at lower and upper levels and the chimney index are used to determine the size of... |
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| Keywords: | synoptic situation environmental wind field radial velocity comparative analysis |
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