Atmospheric extinction properties in Shenyang, China

IMR OpenIR

	Atmospheric extinction properties in Shenyang, China
其他题名	Atmospheric extinction properties in Shenyang, China
	Liu Ningwei 1; Ma Yanjun 3; Ma Jianzhong 1; Wang Yangfeng 3; Yang Suying 2; Li Liguang 3
	2015
发表期刊	PARTICUOLOGY
ISSN	1674-2001
卷号	18 页码:120-126
摘要	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. (C) 2014 Published by Elsevier B.V. on behalf of Chinese Society of Particuology and Institute of Process Engineering, Chinese Academy of Sciences.
其他摘要	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.
关键词	AEROSOLS VISIBILITY Atmospheric visibility Extinction properties Extinction contributions Particle scattering
收录类别	CSCD
语种	英语
资助项目	[Basic Research and Service Fund Item of IAE] ; [Integration and Application Item of Meteorological Key Technologies] ; [National Science and Technology Pillar Program] ; [Liaoning Province Key Technologies Program of China] ; [Public Welfare Professional Item (Meteorology)] ; [National Natural Science Foundation of China]
CSCD记录号	CSCD:5370264
引用统计	被引频次：1[CSCD] [CSCD记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/151979
专题	中国科学院金属研究所
作者单位	1.Chinese Acad Meteorol Science, Beijing 100081, Peoples R China 2.南京大学 3.中国科学院金属研究所
推荐引用方式 GB/T 7714	Liu Ningwei,Ma Yanjun,Ma Jianzhong,et al. Atmospheric extinction properties in Shenyang, China[J]. PARTICUOLOGY,2015,18:120-126.
APA	Liu Ningwei,Ma Yanjun,Ma Jianzhong,Wang Yangfeng,Yang Suying,&Li Liguang.(2015).Atmospheric extinction properties in Shenyang, China.PARTICUOLOGY,18,120-126.
MLA	Liu Ningwei,et al."Atmospheric extinction properties in Shenyang, China".PARTICUOLOGY 18(2015):120-126.