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dc.contributor.authorCowton, TR
dc.contributor.authorSole, AJ
dc.contributor.authorNienow, PW
dc.contributor.authorSlater, DA
dc.contributor.authorChristoffersen, Poul
dc.date.accessioned2018-09-20T12:04:39Z
dc.date.available2018-09-20T12:04:39Z
dc.date.issued2018-07-31
dc.identifier.issn0027-8424
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/280477
dc.description.abstractPredicting the retreat of tidewater outlet glaciers forms a major obstacle to forecasting the rate of mass loss from the Greenland Ice Sheet. This reflects the challenges of modeling the highly dynamic, topographically complex, and data-poor environment of the glacier-fjord systems that link the ice sheet to the ocean. To avoid these difficulties, we investigate the extent to which tidewater glacier retreat can be explained by simple variables: air temperature, meltwater runoff, ocean temperature, and two simple parameterizations of "ocean/atmosphere" forcing based on the combined influence of runoff and ocean temperature. Over a 20-y period at 10 large tidewater outlet glaciers along the east coast of Greenland, we find that ocean/atmosphere forcing can explain up to 76% of the variability in terminus position at individual glaciers and 54% of variation in terminus position across all 10 glaciers. Our findings indicate that (i) the retreat of east Greenland's tidewater glaciers is best explained as a product of both oceanic and atmospheric warming and (ii) despite the complexity of tidewater glacier behavior, over multiyear timescales a significant proportion of terminus position change can be explained as a simple function of this forcing. These findings thus demonstrate that simple parameterizations can play an important role in predicting the response of the ice sheet to future climate warming.
dc.format.mediumPrint-Electronic
dc.languageeng
dc.publisherProceedings of the National Academy of Sciences
dc.titleLinear response of east Greenland's tidewater glaciers to ocean/atmosphere warming.
dc.typeArticle
prism.endingPage7912
prism.issueIdentifier31
prism.publicationDate2018
prism.publicationNameProc Natl Acad Sci U S A
prism.startingPage7907
prism.volume115
dc.identifier.doi10.17863/CAM.27848
dcterms.dateAccepted2018-06-12
rioxxterms.versionofrecord10.1073/pnas.1801769115
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserved
rioxxterms.licenseref.startdate2018-07-16
dc.contributor.orcidCowton, TR [0000-0003-1668-7372]
dc.contributor.orcidChristoffersen, Poul [0000-0003-2643-8724]
dc.identifier.eissn1091-6490
rioxxterms.typeJournal Article/Review
pubs.funder-project-idNatural Environment Research Council (NE/K005871/1)
pubs.funder-project-idEuropean Commission Horizon 2020 (H2020) ERC (3276207)
cam.issuedOnline2018-07-16
rioxxterms.freetoread.startdate2019-01-16


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