Quantifying Light Absorption of Iron Oxides and Carbonaceous Aerosol in Seasonal Snow across Northern China

doi:10.3390/atmos8040063

	Quantifying Light Absorption of Iron Oxides and Carbonaceous Aerosol in Seasonal Snow across Northern China
	Zhou, Y (Zhou, Yue)3; Wang, X (Wang, Xin)3; Wu, XQ (Wu, Xueqin)3; Cong, ZY (Cong, Zhiyuan)1,2; Wu, GM (Wu, Guangming)2; Ji, MX (Ji, Mingxia)3; Wang, X
刊名	ATMOSPHERE
	2017
卷号	8 期号:4 页码:63
关键词	ON-ROAD VEHICLES BLACK-CARBON OPTICAL-PROPERTIES ORGANIC-CARBON BROWN CARBON MINERALOGICAL COMPOSITION ABSORBING IMPURITIES ELEMENTAL CARBON ICE CORE DUST
DOI	10.3390/atmos8040063
文献子类	Article
英文摘要	In this study, we attempted to quantify light absorption by insoluble light-absorbing particles (ILAPs) such as black carbon (BC), organic carbon (OC) and iron oxides in snow using an optical method directly and compared the results with those obtained using optical and chemical analysis methods cooperatively in previous studies. The mass absorption coefficients (MACs) and absorption Angstrom exponents (AAEs) of pure hematite, goethite and fullerene soot were also measured using an integrating sphere/integrating sandwich (ISSW) spectrophotometer in the laboratory. The results indicated that the MACs of pure hematite and goethite are 0.97 +/- 0.02 m(2).g(-1) and 0.43 +/- 0.01 m(2).g(-1) at 550 nm, and their AAEs are 5.53 +/- 0.47 and 2.18 +/- 0.16 from 550 nm to 750 nm, respectively. The MAC and AAE of fullerene soot are 6.40 +/- 0.42 m(2).g(-1) at 550 nm and 0.54 +/- 0.06 from 450 to 750 nm. By using the regionally average AAEs of non-BC components in snow, we evaluated the performance of a directly optical analysis, rather than combination of the optical and chemical methods, in quantifying the light absorption of BC, OC and Fe in snow samples. We found that the directly optical method used to measure the light absorption of BC and OC in Northern China snow has substantially low biases of 6.29% and 4.27% in median comparing to previous method. However, the high biases in estimating light absorption of Fe (33.01%) may be associated with the significant underestimation of the AAE of Fe.
学科主题	自然地理学
WOS研究方向	Meteorology & Atmospheric Sciences
语种	英语
WOS记录号	WOS:000404058300001
内容类型	期刊论文
源URL	[http://ir.itpcas.ac.cn/handle/131C11/8263]
专题	青藏高原研究所_图书馆
通讯作者	Wang, X
作者单位	1.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China. 2.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing 100101, Peoples R China. 3.Lanzhou Univ, Coll Atmospher Sci, Minist Educ, Key Lab Semiarid Climate Change, Lanzhou 730000, Peoples R China.
推荐引用方式 GB/T 7714	Zhou, Y ,Wang, X ,Wu, XQ ,et al. Quantifying Light Absorption of Iron Oxides and Carbonaceous Aerosol in Seasonal Snow across Northern China[J]. ATMOSPHERE,2017,8(4):63.
APA	Zhou, Y .,Wang, X .,Wu, XQ .,Cong, ZY .,Wu, GM .,...&Wang, X.(2017).Quantifying Light Absorption of Iron Oxides and Carbonaceous Aerosol in Seasonal Snow across Northern China.ATMOSPHERE,8(4),63.
MLA	Zhou, Y ,et al."Quantifying Light Absorption of Iron Oxides and Carbonaceous Aerosol in Seasonal Snow across Northern China".ATMOSPHERE 8.4(2017):63.