| 天气与气候 |
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| Features of Dust Aerosol Transportation during Sandstorms over Yanchi Area of Ninxia Autonomous Region |
| WANG Peng-xiang1, 2; SUN Lan-dong1; YUE Ping1,2; NIU Sheng-jie2 |
| 1.Gansu Province & China Meteorological Administration Key Laboratory of Arid Climatic Changes and Reducing Disaster; Lanzhou Institute of Arid Meteorology, China Meteorological Administration, Lanzhou 730020, China; 2.Nanjing University of Information Science and Technology, Nanjing 210044, China |
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Abstract This paper studied the dust aerosol transporting distance and the relation between wind speed and dust erosion based on the in situ measurement measured by APS-3310A(U.S.A.made) in Yanchi area of Ningxia Autonomous Region during April to May of from 1966 to 1999. Dust transporting distance was calculated according to Kaman empirical formula, and the relation between wind speed and dust erosion were calculated following Bagnold calculation. The results show that the aerosol particle transportation distance is about 1.4×105~1.4×106 km, and the threshold sand-moving wind speed is 5.0 m.s-1 in the study area.
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Received: 01 January 1900
Published: 20 November 2007
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2007, Vol. 27 
