| 2000年北京沙尘暴源地解析 |
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| 引用本文： | 李令军,高庆生.2000年北京沙尘暴源地解析[J].环境科学研究,2001,14(2):1-3. |
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| 作者姓名： | 李令军 高庆生 |
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| 作者单位： | 1.北京师范大学 资源与环境科学系,北京 100875 |
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| 基金项目： | 中国西部干旱区生态环境演变与调控研究项目!(G19990 435 0 5 ) |
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| 摘 要： | 2000年我国北方春季干旱少雨，气温回升快，低涡频繁侵入，4月3～9日连续3次冷空气活动，造成了北京地区严重的沙尘暴天气。笔者利用卫星云图和中尺度数值模式MM5，分析了该次沙尘暴源地及沙尘输送机制。结果证明，北京沙尘暴初始源地为蒙古高原及冷涡移动路径上的沙漠戈壁地区；北京周边地区裸露地的沙尘在气旋尾部上升气流的扰动下，亦形成了边界层的近距离输送。
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| 关 键 词： | 沙尘暴 冷锋 东北低涡 云图 |
| 文章编号： | 1001-6929(2001)02-0001-03 |
| 收稿时间： | 2000/10/7 0:00:00 |
| 修稿时间： | 2000年10月7日 |
Source Analysis of Beijing Sand-Dust in 2000 |
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| LI Ling-jun and GAO Qing-xian.Source Analysis of Beijing Sand-Dust in 2000[J].Research of Environmental Sciences,2001,14(2):1-3. |
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| Authors: | LI Ling-jun and GAO Qing-xian |
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| Institution: | 1.Resource and Environment Science Department of Beijing Normal University, Beijing 100875, China2.Chinese Research Academy of Environmental Sciences,Beijing 100012, China |
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| Abstract: | North China was drought with little rainfall, and became warm earlier in the spring in 2000. Eddy often arrived. From 3 to 9 April three cold eddies continuously brought a great deal of sand-dust to Beijing. In this paper with cloud map data from satellite and results from Model MM5, the source of this sand-dust storm and the mechanism of sand transportation are analyzed. As a result, it is found that air current from upper reaches brought sand-dust through free atmospheric layer. Moreover, sand-dust from the peripheral bare soil was raised from the end of eddy and brought to Beijing. |
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| Keywords: | sand dust storm cold front northeast eddy cloud map |
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