| 2002年我国沙尘暴的若干特征分析 |
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| 引用本文： | 方宗义,王炜.2002年我国沙尘暴的若干特征分析[J].应用气象学报,2003,14(5):513-521. |
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| 作者姓名： | 方宗义 王炜 |
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| 作者单位： | 国家卫星气象中心 北京 100081 |
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| 基金项目： | 国家“西北地区土壤水分、沙尘暴监测预测研究”项目的资助 |
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| 摘 要： | 利用2002年的地面观测资料和NCEP/NCAR的再分析资料对2002年3、4月沙尘暴发生频率以及相应的月和候的环流形势特征进行了分析。结果表明，东亚大槽发展和加深是造成该年沙尘暴偏北路径多的主要成因，并且是影响华北、东北甚至华中的一种主要环流形势。东北低涡维持期间生成的副冷锋次天气尺度系统，可以产生强局地沙尘暴。使用GMS-5的卫星观测资料的亮温数据，对沙尘暴在冷涡天气下的沙尘输送情况进行了分析。给出了沙尘暴在向下游输送沙尘时的空间分布，特别指出了在东北冷涡强烈发展的形势下，沙尘可以向东北方向输送，影响东北、远东，甚至更北的地区。
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| 关 键 词： | 沙尘暴 特征分析 卫星亮温分析 |
| 收稿时间： | 2002-10-23 |
Characteristic Analysis of China Dust Storm in 2002 |
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| Fang Zongyi,Wang Wei.Characteristic Analysis of China Dust Storm in 2002[J].Quarterly Journal of Applied Meteorology,2003,14(5):513-521. |
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| Authors: | Fang Zongyi Wang Wei |
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| Affiliation: | National Satellite Meteorological Center, Beijing, 100081 |
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| Abstract: | Dust storm in China of March April in 2002 is studied on its frequency, together with the monthly and pentad circulation pattern, using surface observation and NCEP/NCAR reanalysis. It shows that it is the development and intensification of East Asian trough, a prevailing circulation pattern over the north, northeast even central China, that result in the more occurrence of dust storm along near northern track. The sub cold front developed by the maintenance of the northeast cyclone could bring up strong local dust storm. Further analysis of sand and dust transportation in the northeast cyclone weather pattern gives the spatial distribution of the dust and sand along the track of dust storm in the light of GMS 5 TBB data. It indicates that strong dust storm could develop to the northeast, influencing on the area of northeast, far East, even further north, in the case of strong northeast cyclone. |
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| Keywords: | Dust storm Characteristic analysis GMS 5 Bright temperature data |
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