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Rapid coupling between ice volume and polar temperature over the past 150,000 years

Grant, Katharine; Rohling, Eelco; Bar-Matthews, M; Ayalon, A; Medina-Elizalde, M; Bronk Ramsey, C.; Satow, C; Roberts, Andrew

Description

Current global warming necessitates a detailed understanding of the relationships between climate and global ice volume. Highly resolved and continuous sea-level records are essential for quantifying ice-volume changes. However, an unbiased study of the timing of past ice-volume changes, relative to polar climate change, has so far been impossible because available sea-level records either were dated by using orbital tuning or ice-core timescales, or were discontinuous in time. Here we present...[Show more]

dc.contributor.authorGrant, Katharine
dc.contributor.authorRohling, Eelco
dc.contributor.authorBar-Matthews, M
dc.contributor.authorAyalon, A
dc.contributor.authorMedina-Elizalde, M
dc.contributor.authorBronk Ramsey, C.
dc.contributor.authorSatow, C
dc.contributor.authorRoberts, Andrew
dc.date.accessioned2016-06-14T23:21:03Z
dc.identifier.issn0028-0836
dc.identifier.urihttp://hdl.handle.net/1885/103691
dc.description.abstractCurrent global warming necessitates a detailed understanding of the relationships between climate and global ice volume. Highly resolved and continuous sea-level records are essential for quantifying ice-volume changes. However, an unbiased study of the timing of past ice-volume changes, relative to polar climate change, has so far been impossible because available sea-level records either were dated by using orbital tuning or ice-core timescales, or were discontinuous in time. Here we present an independent dating of a continuous, high-resolution sea-level record1, 2 in millennial-scale detail throughout the past 150,000 years. We find that the timing of ice-volume fluctuations agrees well with that of variations in Antarctic climate and especially Greenland climate. Amplitudes of ice-volume fluctuations more closely match Antarctic (rather than Greenland) climate changes. Polar climate and ice-volume changes, and their rates of change, are found to covary within centennial response times. Finally, rates of sea-level rise reached at least 1.2 m per century during all major episodes of ice-volume reduction.
dc.publisherMacmillan Publishers Ltd
dc.sourceNature
dc.titleRapid coupling between ice volume and polar temperature over the past 150,000 years
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume491
dc.date.issued2012
local.identifier.absfor040605 - Palaeoclimatology
local.identifier.absfor040606 - Quaternary Environments
local.identifier.absfor040305 - Marine Geoscience
local.identifier.ariespublicationu4027924xPUB513
local.type.statusPublished Version
local.contributor.affiliationGrant, Katharine, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationRohling, Eelco, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationBar-Matthews, M, Geological Survey of Israel
local.contributor.affiliationAyalon, A, Geological Survey of Israel
local.contributor.affiliationMedina-Elizalde, M, University of Southampton
local.contributor.affiliationBronk Ramsey, C., University of Oxford
local.contributor.affiliationSatow, C, Royal Holloway University of London
local.contributor.affiliationRoberts, Andrew, College of Physical and Mathematical Sciences, ANU
local.description.embargo2037-12-31
local.bibliographicCitation.issue7426
local.bibliographicCitation.startpage744
local.bibliographicCitation.lastpage747
local.identifier.doi10.1038/nature11593
local.identifier.absseo960304 - Climate Variability (excl. Social Impacts)
dc.date.updated2016-06-14T08:57:40Z
local.identifier.scopusID2-s2.0-84870296287
CollectionsANU Research Publications

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