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dc.contributor.authorFogwill, C.en
dc.contributor.authorTurney, C.en
dc.contributor.authorGolledge, N.en
dc.contributor.authorEtheridge, D.en
dc.contributor.authorRubino, M.en
dc.contributor.authorThornton, D.en
dc.contributor.authorBaker, A.en
dc.contributor.authorWoodward, J.en
dc.contributor.authorWinter, K.en
dc.contributor.authorVan Ommen, T.en
dc.contributor.authorMoy, A.en
dc.contributor.authorCurran, M.en
dc.contributor.authorDavies, S.en
dc.contributor.authorWeber, M.en
dc.contributor.authorBird, M.en
dc.contributor.authorMunksgaard, N.en
dc.contributor.authorMenviel, L.en
dc.contributor.authorRootes, C.en
dc.contributor.authorEllis, B.en
dc.contributor.authorMillman, H.en
dc.contributor.authoret al.en
dc.identifier.citationScientific Reports, 2017; 7(1):39979-1-39979-10en
dc.description.abstractReconstructing the dynamic response of the Antarctic ice sheets to warming during the Last Glacial Termination (LGT; 18,000-11,650 yrs ago) allows us to disentangle ice-climate feedbacks that are key to improving future projections. Whilst the sequence of events during this period is reasonably well-known, relatively poor chronological control has precluded precise alignment of ice, atmospheric and marine records, making it difficult to assess relationships between Antarctic ice-sheet (AIS) dynamics, climate change and sea level. Here we present results from a highly-resolved 'horizontal ice core' from the Weddell Sea Embayment, which records millennial-scale AIS dynamics across this extensive region. Counterintuitively, we find AIS mass-loss across the full duration of the Antarctic Cold Reversal (ACR; 14,600-12,700 yrs ago), with stabilisation during the subsequent millennia of atmospheric warming. Earth-system and ice-sheet modelling suggests these contrasting trends were likely Antarctic-wide, sustained by feedbacks amplified by the delivery of Circumpolar Deep Water onto the continental shelf. Given the anti-phase relationship between inter-hemispheric climate trends across the LGT our findings demonstrate that Southern Ocean-AIS feedbacks were controlled by global atmospheric teleconnections. With increasing stratification of the Southern Ocean and intensification of mid-latitude westerly winds today, such teleconnections could amplify AIS mass loss and accelerate global sea-level rise.en
dc.description.statementofresponsibilityC.J. Fogwill ... & A. Cooperen
dc.publisherNature Publishing Groupen
dc.rights© The Author(s) 2017en
dc.titleAntarctic ice sheet discharge driven by atmosphere-ocean feedbacks at the Last Glacial Terminationen
dc.typeJournal articleen
pubs.library.collectionAustralian Centre for Ancient DNA publicationsen
dc.identifier.orcidCooper, A. [0000-0002-7738-7851]en
Appears in Collections:Australian Centre for Ancient DNA publications

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