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dc.contributor.authorWang, Qiaoqiao
dc.contributor.authorJacob, Daniel James
dc.contributor.authorFisher, Jenny Allison
dc.contributor.authorMao, Jialin
dc.contributor.authorLeibensperger, E
dc.contributor.authorCarouge, C. C.
dc.contributor.authorLe Sager, P
dc.contributor.authorKondo, Y.
dc.contributor.authorJimenez, J. L.
dc.contributor.authorCubison, M. J.
dc.contributor.authorDoherty, S. J.
dc.date.accessioned2014-08-08T13:57:16Z
dc.date.issued2011
dc.identifier.citationWang, Q., D. J. Jacob, J. A. Fisher, J. Mao, E. M. Leibensperger, C. C. Carouge, P. Le Sager, et al. 2011. Sources of Carbonaceous Aerosols and Deposited Black Carbon in the Arctic in Winter-Spring: Implications for Radiative Forcing. Atmospheric Chemistry and Physics 11(23): 12453–12473.en_US
dc.identifier.issn1680-7324en_US
dc.identifier.issn1680-7316en_US
dc.identifier.urihttp://nrs.harvard.edu/urn-3:HUL.InstRepos:12701523
dc.description.abstractWe use a global chemical transport model (GEOS-Chem CTM) to interpret observations of black carbon (BC) and organic aerosol (OA) from the NASA ARCTAS aircraft campaign over the North American Arctic in April 2008, as well as longer-term records in surface air and in snow (2007–2009). BC emission inventories for North America, Europe, and Asia in the model are tested by comparison with surface air observations over these source regions. Russian open fires were the dominant source of OA in the Arctic troposphere during ARCTAS but we find that BC was of prevailingly anthropogenic (fossil fuel and biofuel) origin, particularly in surface air. This source attribution is confirmed by correlation of BC and OA with acetonitrile and sulfate in the model and in the observations. Asian emissions are the main anthropogenic source of BC in the free troposphere but European, Russian and North American sources are also important in surface air. Russian anthropogenic emissions appear to dominate the source of BC in Arctic surface air in winter. Model simulations for 2007–2009 (to account for interannual variability of fires) show much higher BC snow content in the Eurasian than the North American Arctic, consistent with the limited observations. We find that anthropogenic sources contribute 90% of BC deposited to Arctic snow in January-March and 60% in April–May 2007–2009. The mean decrease in Arctic snow albedo from BC deposition is estimated to be 0.6% in spring, resulting in a regional surface radiative forcing consistent with previous estimates.en_US
dc.description.sponsorshipEarth and Planetary Sciencesen_US
dc.description.sponsorshipEngineering and Applied Sciencesen_US
dc.language.isoen_USen_US
dc.publisherEuropean Geosciences Unionen_US
dc.relation.isversionofdoi:10.5194/acp-11-12453-2011en_US
dash.licenseLAA
dc.titleSources of carbonaceous aerosols and deposited black carbon in the Arctic in winter-spring: implications for radiative forcingen_US
dc.typeJournal Articleen_US
dc.description.versionVersion of Recorden_US
dc.relation.journalAtmospheric Chemistry and Physicsen_US
dash.depositing.authorJacob, Daniel James
dc.date.available2014-08-08T13:57:16Z
dc.identifier.doi10.5194/acp-11-12453-2011*
dash.authorsorderedfalse
dash.contributor.affiliatedFisher, Jenny
dash.contributor.affiliatedWang, Qiaoqiao
dash.contributor.affiliatedLeibensperger, Eric Michael
dash.contributor.affiliatedLe Sager, P
dash.contributor.affiliatedMao, Jialin
dash.contributor.affiliatedJacob, Daniel


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