Accelerating changes in ice mass within Greenland, and the ice sheet's sensitivity to atmospheric forcing

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dc.contributor.authorBevis, M.en
dc.contributor.authorHarig, C.en
dc.contributor.authorKhan, S. A.en
dc.contributor.authorBrown, A.en
dc.contributor.authorSimons, F. J.en
dc.contributor.authorWillis, Michael J.en
dc.contributor.authorFettweis, X.en
dc.contributor.authorVan Den Broeke, M. R.en
dc.contributor.authorMadsen, F. B.en
dc.contributor.authorKendrick, E.en
dc.contributor.authorCaccamise, D. J.en
dc.contributor.authorVan Dam, T.en
dc.contributor.authorKnudsen, P.en
dc.contributor.authorNylen, T.en
dc.date.accessioned2024-02-21T18:00:26Zen
dc.date.available2024-02-21T18:00:26Zen
dc.date.issued2019-01-22en
dc.description.abstractFrom early 2003 to mid-2013, the total mass of ice in Greenland declined at a progressively increasing rate. In mid-2013, an abrupt reversal occurred, and very little net ice loss occurred in the next 12-18 months. Gravity Recovery and Climate Experiment (GRACE) and global positioning system (GPS) observations reveal that the spatial patterns of the sustained acceleration and the abrupt deceleration in mass loss are similar. The strongest accelerations tracked the phase of the North Atlantic Oscillation (NAO). The negative phase of the NAO enhances summertime warming and insolation while reducing snowfall, especially in west Greenland, driving surface mass balance (SMB) more negative, as illustrated using the regional climate model MAR. The spatial pattern of accelerating mass changes reflects the geography of NAO-driven shifts in atmospheric forcing and the ice sheet's sensitivity to that forcing. We infer that southwest Greenland will become a major future contributor to sea level rise.en
dc.description.versionPublished versionen
dc.format.extentPages 1934-1939en
dc.format.mimetypeapplication/pdfen
dc.identifier.doihttps://doi.org/10.1073/pnas.1806562116en
dc.identifier.eissn1091-6490en
dc.identifier.issn0027-8424en
dc.identifier.issue6en
dc.identifier.other1806562116 (PII)en
dc.identifier.pmid30670639en
dc.identifier.urihttps://hdl.handle.net/10919/118089en
dc.identifier.volume116en
dc.language.isoenen
dc.publisherProceedings of the National Academy of Sciencesen
dc.relation.urihttps://www.ncbi.nlm.nih.gov/pubmed/30670639en
dc.rightsCreative Commons Attribution-NonCommercial-NoDerivatives 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/en
dc.subjectGNETen
dc.subjectGRACEen
dc.subjectNAOen
dc.subjectSMBen
dc.subjectmass accelerationen
dc.titleAccelerating changes in ice mass within Greenland, and the ice sheet's sensitivity to atmospheric forcingen
dc.title.serialProceedings of the National Academy of Sciences of the United States of Americaen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten
dc.type.otherJournal Articleen
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