| 天气与气候 |
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| Seasonal Distribution and Causes of Dust Events in Tarim Basin, China |
| LI Jin chang; DONG Zhi bao; WANG Xun ming; et al. |
| Key Laboratory of Desert and Desertification, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China |
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Abstract Dust event occurrence and its seasonal distributions in 16 sites are analyzed in Tarim Basin, China. The results show that although dust event frequency are the highest in spring in this region,its seasonal variations can be classified into 3 kinds of distributions:①frequency of dust event in autumn>that in summer>that in winter, in which Kashi and Kuche may be the representative sites; ②frequency in summer>that in winter>that in autumn, in which Ruoqiang is the typical site; and ③that in summer>that in autumn>that in winter, which include the most areas of Tarim Basin. Although dust emissions and its seasonal variations in Tarim Basin are mainly controlled by wind and dust sources, the former is the key control on dust occurrence in this region especially their sources have no significant changes.
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Received: 01 November 2006
Published: 20 January 2008
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2008, Vol. 28 
