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JOURNAL OF DESERT RESEARCH  2009, Vol. 29 Issue (1): 183-188    DOI:
天气与气候     
Observational Study on Aerosol Absorption Properties inWinter and Spring in Semiarid Area

ZHANG Qiu-ying1, NIU Sheng-jie1, SHEN Jiao-guo2, WANG Ying-shun3,
WU Kui3, WANG Min3, ZHANG Kai-xia3

1.Key Laboratory for Atmospheric Physics & Environment(LAPE) of China Meteorological Administ4ation (CMA), Nanjing University of Information Science & Technology( NUIST), Nanjing 210044, China; 2.Shandong Meteorological Bureau, Jinan 250031, China; 3.Xilinhot National Climate Observation, Xilinhot 026000, China
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Abstract  

The aerosol absorption properties were measured with an aethalometer in April and December 2006. Analyzing these real-time black carbon (BC) mass concentration data, we found that the BC mass concentration in winter was much larger than in spring, the daily variations of concentration in the two seasons present a curve of bi-peaks. We specially analyzed the wind speed range which has different influence on BC concentration, and found that when the wind speed is slow(less than 3.5 m·s-1 ), there has an significantly dilution effect to BC concentration. When the wind speed is between 3.5~4.5 m·s-1, the BC concentration increases as the wind speed increased. When the wind speed is larger than 4.5 m·s-1, no apparent relevance is occurred. We also discussed the relationship between the absorption coefficient and the visibility, and we found that the extinction due to aerosol absorption is 25% of the total extinction which due to aerosol absorption and scattering in winter.

Key words:  black carbon aerosol      absorption properties      visibility      influencing factor     
Received:  31 August 2007      Published:  20 January 2009
ZTFLH:  X513  

Cite this article: 

ZHANG Qiu-ying;NIU Sheng-jie;SHEN Jiao-guo;WANG Ying-shun;WU Kui;WANG Min;ZHANG Kai-xia. Observational Study on Aerosol Absorption Properties inWinter and Spring in Semiarid Area. JOURNAL OF DESERT RESEARCH, 2009, 29(1): 183-188.

URL: 

http://www.desert.ac.cn/EN/     OR     http://www.desert.ac.cn/EN/Y2009/V29/I1/183

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