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dc.contributor.authorBush, John W. M.
dc.date.accessioned2010-03-11T21:34:59Z
dc.date.available2010-03-11T21:34:59Z
dc.date.issued2009-04
dc.date.submitted2008-10
dc.identifier.issn0894-8755
dc.identifier.urihttp://hdl.handle.net/1721.1/52530
dc.description.abstractA cold event at around 8200 calendar years BP and the release, at around that time, of a huge freshwater outburst from ice-dammed glacial Lake Agassiz have lent support to the idea that the flood triggered the cold event. Some suggest that the freshwater addition caused a weakening of the North Atlantic meridional overturning circulation (MOC) thereby reducing the ocean transport of heat to high northern latitudes. Although several modeling efforts lend strength to this claim, the paleoceanographic record is equivocal. The authors’ aim is to use a coupled ocean–atmosphere model to examine the possibility that the two events are causally linked but that MOC reduction was not the main agent of change. It is found that the outburst flood and associated redirection of postflood meltwater drainage to the Labrador Sea, via Hudson Strait, can freshen the North Atlantic, leading to reduced salinity and sea surface temperature, and thus to increased sea ice production at high latitudes. The results point to the possibility that the preflood outflow to the St. Lawrence was extremely turbid and sufficiently dense to become hyperpycnal, whereas the postflood outflow through Hudson Strait had a lower load of suspended sediment and was buoyant.en
dc.language.isoen_US
dc.publisherAmerican Meteorological Societyen
dc.relation.isversionofhttp://dx.doi.org/10.1175/2008JCLI2439.1en
dc.rightsArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.en
dc.sourceAmerican Meteorological Societyen
dc.subjectCanadian Institute for Advanced Researchen
dc.subjectNatural Sciences and Engineering Research Council of Canadaen
dc.subjectCanadian Foundation for Climate and Atmospheric Sciences (CFCAS)en
dc.titleFreshwater Discharge, Sediment Transport, and Modeled Climate Impacts of the Final Drainage of Glacial Lake Agassizen
dc.typeArticleen
dc.identifier.citationClarke, Garry K. C., Andrew B. G. Bush, and John W. M. Bush. “Freshwater Discharge, Sediment Transport, and Modeled Climate Impacts of the Final Drainage of Glacial Lake Agassiz.” Journal of Climate 22.8 (2009): 2161-2180. © 2009 American Meteorological Societyen
dc.contributor.departmentMassachusetts Institute of Technology. Department of Mathematicsen_US
dc.contributor.approverBush, John W. M.
dc.contributor.mitauthorBush, John W. M.
dc.relation.journalJournal of Climateen
dc.eprint.versionFinal published versionen
dc.type.urihttp://purl.org/eprint/type/JournalArticleen
eprint.statushttp://purl.org/eprint/status/PeerRevieweden
dspace.orderedauthorsClarke, Garry K. C.; Bush, Andrew B. G.; Bush, John W. M.en
dc.identifier.orcidhttps://orcid.org/0000-0002-7936-7256
mit.licensePUBLISHER_POLICYen


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