| 1999年4月23~24日西北沙尘暴诊断分析 |
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| 引用本文： | 王宝鉴,徐建芬.1999年4月23~24日西北沙尘暴诊断分析[J].甘肃气象,2000,18(2):24-26,30. |
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| 作者姓名： | 王宝鉴 徐建芬 |
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| 作者单位： | 兰州中心气象台!甘肃兰州730020 |
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| 摘 要： | 利用Ｔ１０６数值预报及常规气象资料对１９９９年４月～２４日西北强沙尘暴天气进行分析，结果表明，此次沙尘暴发生在层结不稳定的大气状态下，西凤急流区次级环流是引发沙尘暴的动力和热力机制，强沙尘暴发生在西凤急流入口区南侧。
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| 关 键 词： | 沙尘暴 西风急流 次级环流 |
Study of Dust-devil in Northwest China on April 23-24,1999 |
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| WANG Baojian,XU Jianfen,SUN Landong,YANG Min,FU Xiaohong.Study of Dust-devil in Northwest China on April 23-24,1999[J].Gansu Meteorology,2000,18(2):24-26,30. |
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| Authors: | WANG Baojian XU Jianfen SUN Landong YANG Min FU Xiaohong |
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| Abstract: | A severe dustdevil, happened in northwest China on April 23-24,1999, was analyzed by using the normal meteorological data and NWP data of T106. The result showed that the severe dustdevil happened in state ofunsteady atmosphere, sub-circumfluence in westerly jet region was the main thermodynamics reason, severe dustdevil happened at the south side of westerly jet exit region. |
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| Keywords: | dust-devil westerly jet sub-circumfluence |
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