| 天气与气候 |
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| Observational Study on Aerosol Scattering Properties in Semiarid Area |
| ZHANG Qiu-ying1, NIU Sheng-jie1, SHEN Jian-guo2, WANG Ying-shun3, WU Kui3, WANG Min3, ZHANG Kai-xia3 |
| 1.Key Laboratory of Atmospheric Physics & Atmospheric Environment(LAPE), Nanjing University of Information Science & Technology( NUIST), Nanjing, 210044, China; 2.Inner Mongolia Meteorological Bureau, Hohhot 010051, China; 3.Xilinhot National Climate Observation, Xilinhot 026000, Inner Mongolia, China |
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Abstract The aerosol scattering coefficient was measured with an integrating nephelometer at Xilinhot Observatory from January to September 2005, in combining with the mass concentration of PM10, the visibility, and the routine weather observation data a comprehensive analysis was conducted. We analyzed the seasonal and daily variation featuresof aerosol scattering coefficient. It is found that there is first a slow decline then an ascend from January to September, the daily variation of scattering coefficient presents a curve of bi-peaks. We also discussed the differences between different sand and dust weather. Result shows that the scattering coefficient increases when sand and dust weather occurs, and increases with the increasing sand and dust weather intensity. The scattering coefficient and mass concentration of PM10 have a high correlation coefficient. And there is an exponential relation between the scattering coefficient and the visibility. It proves that the scattering coefficient can monitor the sand and dust weather effectively under the measure precision with no high requirement.
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Received: 01 January 1900
Published: 20 July 2008
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2008, Vol. 28 
