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dc.contributor.authorGraversen, Rune Grand
dc.contributor.authorHeiskanen, Tuomas Ilkka Henrikki
dc.contributor.authorBintanja, Richard
dc.contributor.authorGoelzer, Heiko
dc.date.accessioned2024-08-19T09:54:01Z
dc.date.available2024-08-19T09:54:01Z
dc.date.issued2024-05-25
dc.description.abstractRecent Greenland ice-sheet melt constitutes a considerable contribution to global sea-level rise. Observations indicate an approximate zero mass balance of the ice sheet until the late 1990s, after which a strong increase in melting occurred. This cannot be attributed linearly to gradually-increasing global warming. Instead the abrupt shift has been linked to atmospheric circulation changes, although causality is not fully understood. Here we show that changes of atmospheric waves over Greenland have significantly contributed to the shift into a strong melting state. This is evident after having applied a newly-developed methodology effectively decomposing atmospheric flow patterns into parts associated with waves of different scales such as Rossby waves and smaller perturbations. The onset of a westerly-flow reduction, consistent with anthropogenic Arctic warming, affected transports by atmospheric waves and led to a decrease in precipitation and an increase in surface warming, contributing to ice-sheet mass loss, in particular over the southwestern regions. As such, the Greenland ice-sheet melt is an example of a climate response non-linearly coupled to global warming.en_US
dc.identifier.citationGraversen, Heiskanen, Bintanja, Goelzer. Abrupt increase in Greenland melt enhanced by atmospheric wave changes. Climate Dynamics. 2024:1-13en_US
dc.identifier.cristinIDFRIDAID 2274321
dc.identifier.doi10.1007/s00382-024-07271-6
dc.identifier.issn0930-7575
dc.identifier.issn1432-0894
dc.identifier.urihttps://hdl.handle.net/10037/34290
dc.language.isoengen_US
dc.publisherSpringer Natureen_US
dc.relation.journalClimate Dynamics
dc.relation.projectIDSigma2: NN9348ken_US
dc.relation.projectIDNorges forskningsråd: 280727en_US
dc.relation.projectIDNorges forskningsråd: 324639en_US
dc.relation.projectIDMeteorologisk institutt: 181090en_US
dc.relation.projectIDSigma2: NS9063ken_US
dc.relation.projectIDinfo:eu-repo/grantAgreement/EC/H2020/869304/EU/PROjecTing sEa-level rise : from iCe sheets to local implicaTions/PROTECT/en_US
dc.rights.accessRightsopenAccessen_US
dc.rights.holderCopyright 2024 The Author(s)en_US
dc.rights.urihttps://creativecommons.org/licenses/by/4.0en_US
dc.rightsAttribution 4.0 International (CC BY 4.0)en_US
dc.titleAbrupt increase in Greenland melt enhanced by atmospheric wave changesen_US
dc.type.versionpublishedVersionen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US


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Attribution 4.0 International (CC BY 4.0)
Except where otherwise noted, this item's license is described as Attribution 4.0 International (CC BY 4.0)