Abstract
Based on the available original dust storm records from 60 meteorological stations, we discussed the identification standard of severe dust storms at a single station and constructed a quite complete time series of severe group dust storms in the eastern part of Northwest China in 1954–2001. The result shows that there were 99 severe group dust storms in this region in recent 48 years. The spatial distribution indicates that the Alax Plateau, most parts of the Ordos Plateau and most parts of the Hexi Corridor are the main areas influenced by severe group dust storms. In addition, the season and the month with the most frequent severe group dust storms are spring and April, accounting for 78.8% and 41.4% of the total events respectively. During the past 48 years the lowest rate of severe group dust storms occurred in the 1990s. Compared with the other 4 decades, on the average, the duration and the affected area of severe group dust storms are relatively short and small during the 1990s. In 2000 and 2001, there were separately 4 severe group dust storms as the higher value after 1983 in the eastern part of Northwest China.
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Zijiang, Z., Xiwen, W. Analysis of the severe group dust storms in eastern part of Northwest China. J. Geogr. Sci. 12, 357–362 (2002). https://doi.org/10.1007/BF02837557
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DOI: https://doi.org/10.1007/BF02837557
Key words
- eastern part of Northwest China
- severe group dust storms
- temporal and spatial distribution characteristics