Please use this identifier to cite or link to this item: https://doi.org/10.1073/pnas.1806003115
DC FieldValue
dc.titleSmoke radiocarbon measurements from Indonesian fires provide evidence for burning of millennia-aged peat
dc.contributor.authorWiggins, EB
dc.contributor.authorCzimczik, CI
dc.contributor.authorSantos, GM
dc.contributor.authorChen, Y
dc.contributor.authorXu, X
dc.contributor.authorHolden, SR
dc.contributor.authorRanderson, JT
dc.contributor.authorHarvey, CF
dc.contributor.authorKai, FM
dc.contributor.authorYu, LE
dc.date.accessioned2019-06-07T02:13:26Z
dc.date.available2019-06-07T02:13:26Z
dc.date.issued2018-12-04
dc.identifier.citationWiggins, EB, Czimczik, CI, Santos, GM, Chen, Y, Xu, X, Holden, SR, Randerson, JT, Harvey, CF, Kai, FM, Yu, LE (2018-12-04). Smoke radiocarbon measurements from Indonesian fires provide evidence for burning of millennia-aged peat. Proceedings of the National Academy of Sciences of the United States of America 115 (49) : 12419-12424. ScholarBank@NUS Repository. https://doi.org/10.1073/pnas.1806003115
dc.identifier.issn0027-8424
dc.identifier.issn1091-6490
dc.identifier.urihttps://scholarbank.nus.edu.sg/handle/10635/155414
dc.description.abstract© 2018 National Academy of Sciences. All Rights Reserved. In response to a strong El Niño, fires in Indonesia during September and October 2015 released a large amount of carbon dioxide and created a massive regional smoke cloud that severely degraded air quality in many urban centers across Southeast Asia. Although several lines of evidence indicate that peat burning was a dominant contributor to emissions in the region, El Niño-induced drought is also known to increase deforestation fires and agricultural waste burning in plantations. As a result, uncertainties remain with respect to partitioning emissions among different ecosystem and fire types. Here we measured the radiocarbon content (14C) of carbonaceous aerosol samples collected in Singapore from September 2014 through October 2015, with the aim of identifying the age and origin of fire-emitted fine particulate matter (particulate matter with an aerodynamic diameter less than or equal to 2.5 μm). The Δ14C of fire-emitted aerosol was −76 ± 51, corresponding to a carbon pool of combusted organic matter with a mean turnover time of 800 ± 420 y. Our observations indicated that smoke plumes reaching Singapore originated primarily from peat burning (∼85%), and not from deforestation fires or waste burning. Atmospheric transport modeling confirmed that fires in Sumatra and Borneo were dominant contributors to elevated PM2.5 in Singapore during the fire season. The mean age of the carbonaceous aerosol, which predates the Industrial Revolution, highlights the importance of improving peatland fire management during future El Niño events for meeting climate mitigation and air quality commitments.
dc.publisherProceedings of the National Academy of Sciences
dc.sourceElements
dc.subjectglobal carbon cycle
dc.subjecthuman health
dc.subjectisotope
dc.subjectland cover change
dc.subjecttropical peatlands
dc.typeArticle
dc.date.updated2019-06-04T13:46:30Z
dc.contributor.departmentDEPT OF CIVIL & ENVIRONMENTAL ENGG
dc.description.doi10.1073/pnas.1806003115
dc.description.sourcetitleProceedings of the National Academy of Sciences of the United States of America
dc.description.volume115
dc.description.issue49
dc.description.page12419-12424
dc.published.statePublished
Appears in Collections:Staff Publications
Elements

Show simple item record
Files in This Item:
File Description SizeFormatAccess SettingsVersion 
Smoke radiocarbon measurements from Indonesian fires provide evidence for burning of millennia-aged peat.pdfPublished version1.16 MBAdobe PDF

OPEN

PublishedView/Download

SCOPUSTM   
Citations

6
checked on Nov 19, 2019

Page view(s)

44
checked on Nov 14, 2019

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.