| 国家重点基础研究发展规划 |
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| Uncertainty Analysis of Surface Dust Emission Parameters of a Dust Model |
| ZHOU Xu1, WU Cheng-lai2, LIN Zhao-hui2, LONG Xiao3, WANG Ping1 |
| 1.Key Laboratory of the Ministry of Education for Mechanics on Disaster and Environment in Western China, Lanzhou University, Lanzhou 730000,China; 2.International Center for Climate and Environment Sciences, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China; 3.Key Laboratory of Arid Climatic Changing and Reducing Disaster of Gansu Province, College of Atmospheric Science, Lanzhou University, Lanzhou 730000, China |
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Abstract Dust emission scheme plays an important role in dust event forecast. In this paper, we first analyze the effect of the parameters of soil plastic pressure p and cy on surface horizontal dust flux and vertical dust flux. Then, the WRF-Chem3.0 coupled with dust emission scheme is used to model a dust event occurring in western China in March 27—28, 2007 and to present the effect of parameters on the modeled results. The results indicate that the predicted PM10 concentration is very sensitive to soil plastic pressure. p will affect the concentration value, the central place of concentration and the scope. The value of cy just affect the predicted PM10 concentration, whereas not affect the concentration central place and the scope.
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Received: 01 December 2010
Published: 20 May 2011
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2011, Vol. 31 
