| 一次"干"对流风暴的中尺度分析 |
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| 引用本文： | 武麦凤,安中浩,王旭仙. 一次"干"对流风暴的中尺度分析[J]. 干旱区研究, 2009, 26(2): 282-286 |
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| 作者姓名： | 武麦凤 安中浩 王旭仙 |
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| 作者单位： | 陕西省渭南市气象局,陕西,渭南,714000;陕西省渭南市气象局,陕西,渭南,714000;陕西省渭南市气象局,陕西,渭南,714000 |
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| 基金项目： | 陕西省2006年科技计划项目(2006K08-G12);;陕西省气象局2007年度气象科技创新基金项目(2007M-23)共同资助 |
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| 摘 要： | 通过对2007年7月24日发生在陕西省的一次"干"对流风暴过程的分析,发现这次对流性风暴有2个主要特点:①风暴区的水汽输送和辐合均比较弱;②风暴发生在高空急流入口区内和低空急流轴左前方3~5个纬距内。高、低空急流耦合激发了急流次级环流的产生和发展,急流次级环流对风暴又产生了正反馈作用;地面中尺度涡旋是由急流次级环流上升支引起的。
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| 关 键 词： | " 干" 风暴 高、低空急流 次级环流 中尺度涡旋 陕西省 |
Mesoscale Analysis of a "Dry" Convective Windstorm |
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| WU Mai-feng,AN Zhong-hao,WANG Xu-xian. Mesoscale Analysis of a "Dry" Convective Windstorm[J]. Arid Zone Research, 2009, 26(2): 282-286 |
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| Authors: | WU Mai-feng AN Zhong-hao WANG Xu-xian |
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| Affiliation: | Weinan Meteorological Bureau;Weinan 714000;China |
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| Abstract: | In this study,a mesoscale analysis of a "dry" convective windstorm that occurred in Shaanxi Province on July 24,2007 was conducted.The preliminary results were as follows: The vapor transfer and convergence over the windstorm area were weak.The windstorm occurred in the area under the upper-level jet stream within 3 to 5 latitudes left forward of the axis of the low altitude jet stream.The formation and development of the jet secondary circulation were excited by the coupling of the upper-level and low alti... |
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| Keywords: | Dry windstorm high and low jet secondary circulation mesoscale vortex Shaanxi province. |
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