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Important fossil so...
Important fossil source contribution to brown carbon in Beijing during winter
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Yan, Caiqing (author)
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Zheng, Mei (author)
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- Bosch, Carme (author)
- Stockholms universitet,Institutionen för miljövetenskap och analytisk kemi
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- Andersson, August (author)
- Stockholms universitet,Institutionen för miljövetenskap och analytisk kemi
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Desyaterik, Yury (author)
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Sullivan, Amy P. (author)
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Collett, Jeffrey L. (author)
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Zhao, Bin (author)
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Wang, Shuxiao (author)
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He, Kebin (author)
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- Gustafsson, Örjan (author)
- Stockholms universitet,Institutionen för miljövetenskap och analytisk kemi
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(creator_code:org_t)
- 2017-03-07
- 2017
- English.
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In: Scientific Reports. - : Springer Science and Business Media LLC. - 2045-2322. ; 7
- Related links:
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https://doi.org/10.1...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
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- Organic aerosol (OA) constitutes a substantial fraction of fine particles and affects both human health and climate. It is becoming clear that OA absorbs light substantially (hence termed Brown Carbon, BrC), adding uncertainties to global aerosol radiative forcing estimations. The few current radiative-transfer and chemical-transport models that include BrC primarily consider sources from biogenic and biomass combustion. However, radiocarbon fingerprinting here clearly indicates that light-absorbing organic carbon in winter Beijing, the capital of China, is mainly due to fossil sources, which contribute the largest part to organic carbon (OC, 67 +/- 3%) and its sub-constituents (water-soluble OC, WSOC: 54 +/- 4%, and water-insoluble OC, WIOC: 73 +/- 3%). The dual-isotope (Delta C-14/delta C-13) signatures, organic molecular tracers and Beijing-tailored emission inventory identify that this fossil source is primarily from coal combustion activities in winter, especially from the residential sector. Source testing on Chinese residential coal combustion provides direct evidence that intensive coal combustion could contribute to increased light-absorptivity of ambient BrC in Beijing winter. Coal combustion is an important source to BrC in regions such as northern China, especially during the winter season. Future modeling of OA radiative forcing should consider the importance of both biomass and fossil sources.
Subject headings
- NATURVETENSKAP -- Geovetenskap och miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Yan, Caiqing
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Zheng, Mei
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Bosch, Carme
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Andersson, Augus ...
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Desyaterik, Yury
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Sullivan, Amy P.
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show more...
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Collett, Jeffrey ...
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Zhao, Bin
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Wang, Shuxiao
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He, Kebin
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Gustafsson, Örja ...
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Earth and Relate ...
- Articles in the publication
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Scientific Repor ...
- By the university
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Stockholm University