| 广西大范围低空急流暴雨的分型及雷达回波特征分析 |
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| 引用本文： | 周文志,唐熠,王艳兰,孙莹,吴松,蒋丽娟.广西大范围低空急流暴雨的分型及雷达回波特征分析[J].自然灾害学报,2011(4). |
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| 作者姓名： | 周文志 唐熠 王艳兰 孙莹 吴松 蒋丽娟 |
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| 作者单位： | 桂林市气象局; |
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| 基金项目： | 国家自然科学基金项目(40865001); 广西科学技术厅自然基金项目(桂科自07280766); 广西气象局重点攻关项目(QK200727);广西区气象局重点项目:广西5~8月区域分片持续性暴雨短期预报关键技术研究共同资助; 广西桂林市科技局科技攻关项目(20070216-04) |
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| 摘 要： | 对2002—2010年广西12个低空急流暴雨个例进行了普查分析,结果表明,广西大范围低空急流暴雨是在大尺度背景下,由天气系统和中小尺度系统共同影响的结果,在有低空急流存在的情况下,降水量有明显的增幅作用;通过对天气背景进行分析,对广西大范围低空急流暴雨天气形势进行了分型,得到了低涡急流型和深槽切变急流型以及副高加强急流型等3种型式。雷达回波主要有块状、带状和絮状3种类型;再通过对大范围低空急流暴雨过程的雷达回波强度、回波演变、其他产品特征、回波的源地移动和暴雨落区等内容的分析,提出了低空急流暴雨的短期预报模型,为今后广西大范围急流暴雨预报提供参考。
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| 关 键 词： | 低空急流 暴雨 概念模型 雷达回波 |
Classification of low-level jet stream rainstorm in a wide range of Guangxi and characteristic analysis of radar echo |
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| ZHOU Wen-zhi,TANG Yi,WANG Yan-lan,SUN Ying,WU Song,JIANG Li-juan.Classification of low-level jet stream rainstorm in a wide range of Guangxi and characteristic analysis of radar echo[J].Journal of Natural Disasters,2011(4). |
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| Authors: | ZHOU Wen-zhi TANG Yi WANG Yan-lan SUN Ying WU Song JIANG Li-juan |
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| Institution: | ZHOU Wen-zhi,TANG Yi,WANG Yan-lan,SUN Ying,WU Song,JIANG Li-juan(Guilin Meteorological Bureau of Guangxi,Guilin 541001,China) |
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| Abstract: | General investigation and analysis of 12 low-level jet stream rainstorm examples in Guanxi from 2002 to 2010 were carried out.The results show that under large-scale background the low-level jet stream rainstorm in wide range of Guangxi is formed by interaction between weather system and meso-microscale system Im the case existing low-level jet stream,precipitation has a obvious increasing range function.Through analysis of weather background,the synopic situation of low-level jet stream rainstorm was class... |
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| Keywords: | low-level jet stream rainstorm conceptual model radar echo |
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