| 天气与气候 |
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| Preliminary Analysis of the Spatial Distribution of the Dust Aerosol in a Heavy Dust Storm |
| SHEN Li-li1, SHENG Li-fang2, CHEN Jing-jing3 |
| 1.Department of Marine Meteorology, College of Physical and Environmental Oceanography, Ocean University of China, Qingdao 266100, Shandong, China; 2.Ocean-Atmosphere Interaction and Climate Laboratory, Ocean University of China, Qingdao 266100, Shandong, China; 3.Hunan Meteorological Observatory, Changsha 410007, China |
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Abstract Based on the MICAPS meteorology data, the process and the horizontal distribution of a dust storm occurring on 25—29 May 2008 were analyzed, and the vertical distribution of the dust aerosol during the dust storm transport process was analyzed using CALIPSO satellite data, and then air mass trajectories were computed with the HYSPLIT model. The results showed that the dust storm was mainly caused by the Mongolian cyclone, and the dust was transported by the low altitude jet flow. The dust near the surface was observed in the northwesterly or northerly wind flows between anticyclonic and cyclonic flows. CALIPSO data can be used to retrieve the vertical distribution of the dust-aerosol, and the depolarization ratio for dust aerosol varied from 0.10 to 0.38, the dust aerosol mainly appeared between 2 and 4 kilometers above the sea leave, and up to 5 kilometers.
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Received: 01 October 2009
Published: 20 November 2010
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2010, Vol. 30 
