| 西南低涡造成连续大暴雨天气个例诊断分析 |
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| 引用本文： | 段荣,王芬,熊方,韦仕丽.西南低涡造成连续大暴雨天气个例诊断分析[J].安徽农业科学,2011(8):4696-4699. |
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| 作者姓名： | 段荣 王芬 熊方 韦仕丽 |
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| 作者单位： | 贵州省黔西南州气象局;贵州省山地气候与资源重点实验室;贵州省气象台 |
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| 基金项目： | 2008年贵州省黔西南州重点科研项目(2008-47) |
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| 摘 要： | 利用自动站观测资料、常规气象资料、FY-2C红外云图及NCEP再分析资料,对贵州省西南部2010年6月27～30日出现的一场连续性大暴雨天气过程进行分析。结果表明,此次连续性大暴雨天气过程是受西南低涡影响;在500 hPa高空图上,巴尔喀什湖至贝加尔湖之间有一稳定大槽,槽前不断分裂出小槽或气旋性环流,沿高原东侧的阶梯槽伸展路径下滑、传递、补充到位于四川盆地的西南低涡中,使西南低涡趋于活跃南移至贵州西部维持发展加深,垂直伸展到200 hPa,72 h盘踞在贵州西部,造成贵州西南部3 d连续出现大暴雨。
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| 关 键 词： | 西南低涡 大暴雨 诊断分析 |
Diagnosis and Analysis of a Continuous Heavy Rainstorm Process Caused by Southwest Vortex |
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| Institution: | DUAN Rong et al(The Meteorological Bureau of Southwestern Guizhou,Xingyi,Guizhou 562400) |
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| Abstract: | According to the automatic weather stations(AWS) data,conventional weather data,FY-2c infrared satellite images and NCEP reanalysis data,the continuous heavy rainstorm process happened from June 27 to 30,2010 in southwest Guizhou Province was analyzed.The results indicated that this continuous heavy rainstorm process was caused by southwest vortex;as shown in the 500hp aerial map,there was a stable through between Lake Balkhash and Lake Baikal,some small through and cyclonic circulation kept splitting off in front of the through,gliding,transferring and supplementing the southwest vortex in Szechwan Basin along the extended path of ladder through at the eastern part of plateau,which maintained the southwest vortex at the western Guizhou Province,and extended it to 200 hPa,the stagnation of the southwest vortex over western Guizhou Province for 72 h resulted in the heavy rainstorm which lasted for three days in this area. |
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| Keywords: | Southwest vortex Heavy rainstorm Diagnosis and analysis |
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