Aerosol optical properties and its radiative forcing over Yulin,China in 2001 and 2002 |
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| Authors: | Huizheng Che Xiaoye Zhang Stephane Alfraro Bernadette Chatenet Laurent Gomes Jianqi Zhao |
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| Institution: | Key Laboratory of Atmospheric Chemistry, Centre for Atmosphere Watch and Services,
Chinese Academy of Meteorological Sciences, China Meteorological Administration, Beijing 100081;Key Laboratory of Atmospheric Chemistry, Centre for Atmosphere Watch and Services,
Chinese Academy of Meteorological Sciences, China Meteorological Administration, Beijing 100081;Laboratoire Inter-Universitaire des Systemes Atmospheriques,
Universite Paris VII/Paris XII, 94010 Creteil Cedex, France;Laboratoire Inter-Universitaire des Systemes Atmospheriques,
Universite Paris VII/Paris XII, 94010 Creteil Cedex, France;Centre National de la Recherche Scientifique,
Meteo-France/CNRM/GMEI/MNPCA, 31057, Toulouse, France;State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029 |
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| Abstract: | The aerosol optical properties and direct radiative forcing over the Mu Us desert of northern China,
acquired through a CE318 sunphotometer of the ground-based Aerosol Robotic Network (AERONET), are analyzed. The
seasonal variations in the aerosol optical properties are examined. The effect of meteorological elements
(pressure, temperature, water vapor pressure, relative humidity and wind speed) on the aerosol optical properties
is also studied. Then, the sources and optical properties under two different cases, a dust event and a pollution
event, are compared. The results show that the high aerosol optical depth (AOD) found in Yulin was mostly
attributed to the occurrence of dust events in spring from the Mu Us desert and deserts of West China and
Mongolia, as well as the impacts of anthropogenic pollutant particles from the middle part of China in the
other seasons. The seasonal variation and the probability distribution of the radiative forcing and the
radiative forcing efficiency at the surface and the top of the atmosphere are analyzed and regressed using
the linear and Gaussian regression methods. |
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| Keywords: | aerosol optical properties aerosol radiative forcing Mu Us desert China |
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