| 天气与气候 |
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| Impact of Snow Cover on Sand and Dust Storm |
LI Zhang-jun1,2; HAO Lu2,3; LI Xing-hua2
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| 1.Nanjing University of Information Science & Technology, Nanjing 210044, China;
2.Inner Mongolia Autonomous Region Meteorological Bureau, Hohhot 01005, China;
3.School of Geography and Remote Sensing, Beijing Normal University, Beijing 100875, China |
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Abstract Abstract: By using remote sensing data and meteorological observation data and technology of GIS and RS, the characters of snow cover and sand-dust storm were obtained and calculated. Taking sand-dust storm days, blowing dust days and snow cover percentage as indexes, an analysis on the relationship between sand-dust storm days and snow cover percentage in early spring and winter in Midwestern Inner Mongolia is performed. The result shows that in this area: There is a negative interrelation between sand-dust storm days and snow cover percentage, which varies due to the different season. The negative interrelation between sand-dust storm days and snow cover percentage during Jan. to Mar. is more remarkable than that during Nov. to Dec. The inhibiting impact of snow cover on blowing dust is stronger than that on sand-dust storm. The snow coverage degree reflects the influencing extent of snow cover and the snow covering days reflects its lasting duration. These two snow cover indices on time-space aspects can well reflect the integrated impact of snow cover on sand-dust storm.
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Received: 14 June 2007
Published: 20 March 2008
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2008, Vol. 28 
