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投稿时间：2006-09-11 修订日期：2006-11-07
投稿时间：2006-09-11 修订日期：2006-11-07
中文摘要: 利用西安多普勒雷达产品资料对2006年6月25日发生在陕西中部的一次下击暴流天气进行初
步分析，结果表明：强单体合并加强形成弓状回波并产生了33m·s-1的大风天气
；弓状回波反射率因子核心（60dBz）的高度下降明显；垂直液态水含量高达70kg·m-2
；弓状回波中层辐合较强，多普勒风场中层辐合区特征比较明显。
Abstract:The downburst on June 25, 2006 in central part of Shaanxi Province was
analyzed with Doppler radar data from Xi’an. The results show that the strong
single cell is combined and enhanced to cause a bow echo, leading to the weather
with strong wind 33 m·s-1. The height of reflectivity factor core (60dBz
) drops markedly. The vertical column liquid water content is 70kg·m-2. The
convergence in the middle level of the bow echo is relatively strong. The characteristi
cs of convergence in the middle level of Doppler wind field can be seen clearly.
keywords: downburst bow echo middle level convergence zone
文章编号： 中图分类号： 文献标志码：
基金项目:
| Author Name | Affiliation |
| Bi Xu | Yulin Meteorological Office, Shaanxi Province, 719000 |
| Luo Hui | Shaanxi Provincial Lightning Pretection Centre |
| Liu Yong | Shaanxi Province Meteorological Observatory |
引用文本：
毕旭,罗慧,刘勇,2007.陕西中部一次下击暴流的多普勒雷达回波特征[J].气象,33(1):70-73.
Bi Xu,Luo Hui,Liu Yong,2007.Doppler Radar Echo Features of a Downburst in Central Part of Shaanxi Province[J].Meteor Mon,33(1):70-73.
毕旭,罗慧,刘勇,2007.陕西中部一次下击暴流的多普勒雷达回波特征[J].气象,33(1):70-73.
Bi Xu,Luo Hui,Liu Yong,2007.Doppler Radar Echo Features of a Downburst in Central Part of Shaanxi Province[J].Meteor Mon,33(1):70-73.