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学科主题: 地理学::自然地理学
题名: Quantifying Light Absorption of Iron Oxides and Carbonaceous Aerosol in Seasonal Snow across Northern China
作者: 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
通讯作者: Wang, X
关键词: ON-ROAD VEHICLES ; BLACK-CARBON ; OPTICAL-PROPERTIES ; ORGANIC-CARBON ; BROWN CARBON ; MINERALOGICAL COMPOSITION ; ABSORBING IMPURITIES ; ELEMENTAL CARBON ; ICE CORE ; DUST
刊名: ATMOSPHERE
发表日期: 2017
DOI: 10.3390/atmos8040063
卷: 8, 期:4, 页:63
收录类别: SCI
合作性质: 国内
文章类型: Article
类目[WOS]: Meteorology & Atmospheric Sciences ; Meteorology & Atmospheric Sciences
研究领域[WOS]: Meteorology & Atmospheric Sciences
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.
语种: 英语
WOS记录号: WOS:000404058300001
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.itpcas.ac.cn/handle/131C11/8263
Appears in Collections:图书馆_期刊论文

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作者单位: 1.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:
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.
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