Characteristics of the imaginary part and single-scattering albedo of urban aerosols in northern China
Qiu, JH; Yang, LQ; Zhang, XY
2004-07
发表期刊TELLUS SERIES B-CHEMICAL AND PHYSICAL METEOROLOGY
卷号56期号:3页码:276-284
文章类型Article
摘要An improved broadband diffuse solar radiation method for retrieval of the aerosol imaginary part (AIP) and its single-scattering albedo (SSA) is proposed. The first improvement is to determine diffuse radiation from combined pyrheliometer and pyranometer data. Secondly, available approaches to input parameters demanded for AIP retrieval are presented, including an approach to determine the aerosol extinction coefficient profile from visibility and aerosol optical depth data. This method is used to retrieve AIP and SSA from routine pyrheliometer and pyranometer observation data measured in 1993-2001 at six meteorological observatories in northern China, all located around big or medium-sized cities. As shown in the retrieval results. 9-yr mean yearly-mean AIP (luring 1993-2001 changed from 0.0207 to 0.0301 for the six cities, and the corresponding SSA changed from 0.851 to 0.803, with a mean value of 0.832. There are different variation trends in yearly-mean Alp and SSA during 1993-2001. At Harbin and Beijing observatories the AIP shows an increasing trend. At Shenyang and Zhengzhou observatories the AIP had an increasing trend during 1993-1995, but a decreasing trend after 1995. Errors in the retrieved yearly-mean AIP and SSA were estimated. The main sources of AIP errors are systematic errors in the radiation measurement as well as uncertainty about the aerosol size distribution. The main error in SSA retrieval is the systematic error in the radiation data. Uncertainty about aerosol size distribution has a weak impact on SSA retrieval. It is estimated, according to sensitivity tests, that errors of yearly-mean AIP and SSA are usually within 0.0054 and 0.041 respectively.
学科领域Meteorology & Atmospheric Sciences
DOI10.1111/j.1600-0889.2004.00101.x
关键词[WOS]BAND EXTINCTION METHOD ; SOLAR-RADIATION ; ANTHROPOGENIC AEROSOLS ; ATMOSPHERIC CORRECTION ; OPTICAL-PROPERTIES ; GREENHOUSE GASES ; GROUND ALBEDO ; CLIMATE ; INDEX ; ABSORPTION
收录类别SCI ; SCIE
语种英语
WOS研究方向Meteorology & Atmospheric Sciences
WOS记录号WOS:000222638100008
出版者BLACKWELL MUNKSGAARD
引用统计
被引频次:23[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/11988
专题黄土与第四纪地质国家重点实验室(1985-2004)
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GB/T 7714
Qiu, JH,Yang, LQ,Zhang, XY. Characteristics of the imaginary part and single-scattering albedo of urban aerosols in northern China[J]. TELLUS SERIES B-CHEMICAL AND PHYSICAL METEOROLOGY,2004,56(3):276-284.
APA Qiu, JH,Yang, LQ,&Zhang, XY.(2004).Characteristics of the imaginary part and single-scattering albedo of urban aerosols in northern China.TELLUS SERIES B-CHEMICAL AND PHYSICAL METEOROLOGY,56(3),276-284.
MLA Qiu, JH,et al."Characteristics of the imaginary part and single-scattering albedo of urban aerosols in northern China".TELLUS SERIES B-CHEMICAL AND PHYSICAL METEOROLOGY 56.3(2004):276-284.
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