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Isotope constraints...
Isotope constraints of the strong influence of biomass burning to climate-forcing Black Carbon aerosols over Southeast Asia
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- Liu, Junwen (author)
- Stockholms universitet,Institutionen för miljövetenskap,Jinan University, China; Chinese Academy of Sciences, China
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- Andersson, August (author)
- Stockholms universitet,Institutionen för miljövetenskap
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Zhong, Guangcai (author)
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Geng, Xiaofei (author)
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Ding, Ping (author)
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Zhu, Sanyuan (author)
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Cheng, Zhineng (author)
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Pauzi Zakaria, Mohamad (author)
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Bong, Chui Wei (author)
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Li, Jun (author)
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Zheng, Junyu (author)
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Zhang, Gan (author)
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- Gustafsson, Örjan (author)
- Stockholms universitet,Institutionen för miljövetenskap
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(creator_code:org_t)
- Elsevier BV, 2020
- 2020
- English.
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In: Science of the Total Environment. - : Elsevier BV. - 0048-9697 .- 1879-1026. ; 744
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- Black Carbon (BC) deteriorates air quality and contributes to climate warming, yet its regionally- and seasonally-varying emission sources are poorly constrained. Here we employ natural abundance radiocarbon (C-14) measurements of BC intercepted at a northern Malaysia regional receptor site, Bachok, to quantify the relative biomass vs. fossil source contributions of atmospheric BC, in a first year-round study for SE Asia (December 2015-December 2016). The annual average C-14 signature suggests as large contributions from biomass burning as from fossil fuel combustion. This is similar to findings from analogous measurements at S Asian receptors sites (similar to 50% biomass burning), while E Asia sites are dominated by fossil emission (similar to 20% biomass burning). The C-14-based source fingerprinting of BC in the dry spring season in SE Asia signals an even more elevated biomass burning contribution (similar to 70% or even higher), presumably from forest, shrub and agricultural fires. This is consistent with this period showing also elevated ratio of organic carbon to BC (up from similar to 5 to 30) and estimates of BC emissions from satellite fire data. Hence, the present study emphasizes the importance of mitigating dry season vegetation fires in SE Asia.
Subject headings
- NATURVETENSKAP -- Geovetenskap och miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences (hsv//eng)
Keyword
- Black Carbon
- Radiocarbon
- Biomass burning
- SE Asia
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Liu, Junwen
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Andersson, Augus ...
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Zhong, Guangcai
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Geng, Xiaofei
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Ding, Ping
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Zhu, Sanyuan
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show more...
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Cheng, Zhineng
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Pauzi Zakaria, M ...
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Bong, Chui Wei
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Li, Jun
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Zheng, Junyu
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Zhang, Gan
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Gustafsson, Örja ...
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- 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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Science of the T ...
- By the university
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Stockholm University