| 边界层辐合线在局地强风暴临近预警中的应用 |
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| 引用本文： | 刁秀广,车军辉,李静,朱君鉴.边界层辐合线在局地强风暴临近预警中的应用[J].气象,2009,35(2):29-33. |
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| 作者姓名： | 刁秀广 车军辉 李静 朱君鉴 |
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| 作者单位： | 山东省气象台,济南,250031 |
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| 基金项目： | 山东省科技厅科技攻关项目(2007GG20008001);;山东省气象局重点课题(2007sdqxz03)共同资助 |
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| 摘 要： | 利用济南CINRAD/SA雷达探测到的边界层辐合信息,结合地面实况和探空资料及NCEP资料,对近年发生在山东中部的典型局地强风暴的生成及对流参数进行了分析.结果表明:高时空分辨率的雷达能获得近地层辐合线信息,对流风暴强的出流和近地层环境风的辐合在一定条件下可产生窄带回波;远离风暴主体的出流边界和顺地面风移动的风速辐合线在热力条件较弱的情况下一般不会产生对流天气;出流边界的叠加或出流边界与环境风辐合线的叠加在有利的环境条件下可产生局地强风暴,单纯的近地层辐合线在有利的环境条件下可产生较为孤立的局地风暴,可作为强对流天气临近预警的关键参考依据;风暴初始位置、初始时间和风暴类型具有不确定性,是强对流天气临近预警的难点.
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| 关 键 词： | 边界层辐合 窄带回波 强风暴 |
| 收稿时间： | 2008/5/11 0:00:00 |
| 修稿时间： | 2008/12/16 0:00:00 |
Application of Boundary Convergence Line in Nowcasting Warning of Severe Convective Storm |
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| Diao Xiuguang,Che Junhui,Li Jing and Zhu Junjian.Application of Boundary Convergence Line in Nowcasting Warning of Severe Convective Storm[J].Meteorological Monthly,2009,35(2):29-33. |
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| Authors: | Diao Xiuguang Che Junhui Li Jing and Zhu Junjian |
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| Institution: | Shandong Province Meteorological Observatory;Jinan 250031 |
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| Abstract: | By using the sounding data,surface wind vector,sounding data,NCEP data and the boundary convergence line detected by Jinan Doppler weather radar,severe convective storms happened in Shandong province during 2005-2007 were analyzed.The results show that Doppler weather radar with high spatial and time resolution can obtain the information of boundary convergence zone.Normally,the narrow band echo reflects the existence of thunderstorm outflow and surface wind-field convergence zone.The outflow boundary keeps... |
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| Keywords: | boundary convergence narrow band echo severe convective storms |
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