| “黑格比”后期异常强降水形成机理分析 |
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| 引用本文： | 黄莉,詹莹玉,孙莹,周云霞,农钢.“黑格比”后期异常强降水形成机理分析[J].热带海洋学报,2011(6). |
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| 作者姓名： | 黄莉 詹莹玉 孙莹 周云霞 农钢 |
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| 作者单位： | 广西崇左市气象局;广西桂林市气象局; |
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| 基金项目： | 国家自然科学基金项目(40865001) |
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| 摘 要： | 0814号强台风黑格比2008年9月25日08时减弱成低压进入越南高平后,在外围云系有明显中尺度对流云团发展,引发广西西南部新一轮比热带风暴本身更具破坏力的暴雨到大暴雨降雨。对美国国家环境预报中心(NCEP)提供的再分析资料、常规观测资料及雷达回波等研究结果,认为南亚高压西退造成负涡度向对流层中低层延伸,使500 hPa的西太平洋副热带高压出现减弱东退现象,成为低压后部对流云团在广西西南部停滞发展的背景条件。造成此次暴雨的4个中尺度对流云团,都是沿着暖切变右(北)侧100—200km范围内从东南往西北方向产生、移动的,中尺度降水落区呈东南-西北的带状分布。暖切变、垂直方向上的抽吸作用、θse的高值始终呈漏斗状的湿中性特征以及湿Q矢量对次级环流的激发作用等是此次低压后部中尺度对流云团的加强机制;而湿舌、湿Q矢量辐合区与未来强降水出现区域、出现时间对应较好。
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| 关 键 词： | 黑格比 暖切变 湿Q矢量 湿中性结构 中尺度对流 |
Analysis of the heavy rain caused by Typhoon Hagupit |
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| HUANG Li,ZHAN Ying-yu,SUN Ying,ZHOU Yun-xia,NONG Gang.Analysis of the heavy rain caused by Typhoon Hagupit[J].Journal of Tropical Oceanography,2011(6). |
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| Authors: | HUANG Li ZHAN Ying-yu SUN Ying ZHOU Yun-xia NONG Gang |
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| Institution: | HUANG Li1,ZHAN Ying-yu1,SUN Ying2,ZHOU Yun-xia1,NONG Gang1 1.The Municipal Weather Bureau of Chongzuo of Guangxi,Nanning 530001,China,2.The Municipal Weather Bureau of Guilin of Guangxi,Guilin 541001 |
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| Abstract: | The No.0814 Typhoon Hagupit was weakened to a cyclone as soon as it made a landfall in Caobang,Vietnam,at 8 am on September 25th,2008.With the development of meso-scale convective clouds(MCCs) that were generated outside the cloud system of the cyclone,a destructive rainfall was triggered in southwestern Guangxi,even much heavier than the one caused by a typical tropical storm.Analysis of the United States National Center for Environmental Prediction(NCEP) data indicated that negative vorticity extended to ... |
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| Keywords: | Hagupit warm shear wet Q vector neutral wet structure mesoscale convective |
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