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Atmospheric extinction properties in Shenyang, China

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文摘 Atmospheric visibility impairment due to human activities is becoming increasingly significant in metropolitan Shenyang, China. In this study, hourly data of relevant factors throughout the year 2010 in Shenyang were used to evaluate the local atmospheric extinction properties. The results show that the average coefficient of total extinction and aerosol single-scattering albedo in 2010 were 622.72 Mm~(-1) and 0.87, respectively, values that are characteristic of the "municipal pollution type". Visibility is most impaired during winter and especially in January. The coefficient of total extinction exhibits a single daily cycle with a maximum at 5-6 am and a minimum at 3 pm. The mean extinction contributions of the constituents, from high to low, were particle scattering (87.49%), particle absorption, gas absorption, and gas scattering. The extinction contribution of gas molecules was little more than 4.5%, far smaller than that of particles. Scattering by particles was the main contributor to extinction, especially in the morning and around midnight.
来源 Particuology ,2015,18:120-126 【核心库】
DOI 10.1016/j.partic.2014.03.007
关键词 Atmospheric visibility ; Extinction properties ; Extinction contributions ; Particle scattering
地址

1. Chinese Academy of Meteorological Sciences, Beijing, 100081  

2. Institute of Atmospheric Environment, China Meteorological Administration, Shenyang, 110016  

3. Nanjing University of Information Science & Technology, Nanjing, 210044

语种 英文
文献类型 研究性论文
ISSN 1674-2001
学科 力学
基金 the Public Welfare Professional Item (Meteorology) ;  the National Science and Technology Pillar Program ;  the Liaoning Province Key Technologies Program of China ;  the Integration and Application Item of Meteorological Key Technologies ;  supported by the Basic Research and Service Fund Item of IAE ;  国家自然科学基金
文献收藏号 CSCD:5370264

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