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Quantifying Light Absorption of Iron Oxides and Carbonaceous Aerosol in Seasonal Snow across Northern China
Zhou, Y (Zhou, Yue)1; Wang, X (Wang, Xin)1; Wu, XQ (Wu, Xueqin)1; Cong, ZY (Cong, Zhiyuan)2,3; Wu, GM (Wu, Guangming)2; Ji, MX (Ji, Mingxia)1; Wang, X
Source PublicationATMOSPHERE
2017
Volume8Issue:4Pages:63
DOI10.3390/atmos8040063
AbstractIn 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.
Subject Area自然地理学
WOS IDWOS:000404058300001
Language英语
Indexed BySCI
KeywordON-ROAD VEHICLES BLACK-CARBON OPTICAL-PROPERTIES ORGANIC-CARBON BROWN CARBON MINERALOGICAL COMPOSITION ABSORBING IMPURITIES ELEMENTAL CARBON ICE CORE DUST
WOS Research AreaMeteorology & Atmospheric Sciences
WOS SubjectMeteorology & Atmospheric Sciences ; Meteorology & Atmospheric Sciences
Cooperation Status国内
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itpcas.ac.cn/handle/131C11/8263
Collection图书馆
Corresponding AuthorWang, X
Affiliation1.Lanzhou Univ, Coll Atmospher Sci, Minist Educ, Key Lab Semiarid Climate Change, Lanzhou 730000, 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.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China.
Recommended Citation
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.
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