| Weather and Climate |
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| Variation of Dust Storm Days in Tarim Basin and Its Relation with North Atlantic Oscillation |
| ZHAO Yong1,2, LI Hong-jun1,2, HE Qing1,2 |
1.Institute of Desert Meteorology, China Meteorology Administration, Urumqi 830002, China;
2.Taklimakan Desert Atmosphere and Environment Observation Experiment Station, Tazhong 841000, Xinjiang, China |
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Abstract The spatial and temporal variation characteristics of sandstorm and blowing sand days in spring and summer in the Tarim Basin and its reason were analyzed based on observation data of sandstorm and blowing sand days at 35 stations during 1961—2007. The sandstorm and blowing sand days presented obviously descending trend, and the sandstorm and blowing sand days had the maximum descending range in southwest and northeast basin, respectively. The abrupt change of sandstorm days in spring and summer happened in middle-late 1980s, but the abrupt change of the blowing sand days occurred in middle-late 1990s in Tarim Basin. Most of the sand-dust weather lasted for one month, and that lasted for two months or more mainly occurred in northern parts of the Tarim Basin, especially in Aksu area. In the recent 20 years, the number of the stations recorded sand-dust days anomaly decreased rapidly, especially after 2000. The correlation analysis showed that the North Atlantic Oscillation index in previous winter had good correlation with sandstorm and blowing sand days in spring and summer in the Tarim Basin, and it could be used as a predictive factor for dust storm days in the study region.
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Received: 21 October 2011
Published: 28 November 2011
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2012, Vol. 32 
