| Weather and Climate |
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| Numerical Simulations of Dust Weather in China Using a Regional Climate Model |
| HUANG Qian1,2, YAO Su-xiang2, ZHANG Yao-cun3 |
1.Key Laboratory for Atmospheric Physics and Environment, China Meteorological Administration, Nanjing 210044, China;
2.Nanjing University of Information Science & Technology, Nanjing 210044, China;
3.School of Atmospheric Sciences, Nanjing University, Nanjing 210093, China |
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Abstract Most recent numerical prediction models of dust storm are based on mesoscale numerical model and are nested in one-way mode within dust emission scheme. These models are not suitable to simulation of long-range transport process of dust events and feedback of dust aerosol on meteorological field. In this paper, temporal and spatial characteristics of dust weather in 2001 were simulated using a high resolution regional climate model. Simulation results show that the model has well performance on simulation of the sand source distribution and the seasonal variation of dust events. Vertical distribution of four dust grain size groups shows that both the soil particle size and the topography have significant effect on dust emission. The main components of dust in north China are macro particles exceed 5 m and in south China are particles less than 1 m. The model also has well performance on simulation of transmission paths from different sand sources and on different time scales.
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Received: 20 April 2011
Published: 20 January 2012
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2012, Vol. 32 
