Rapid coupling between ice volume and polar temperature over the past 150,000 years
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...
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ftsouthampton:oai:eprints.soton.ac.uk:345297 2023-08-27T04:05:08+02:00 Rapid coupling between ice volume and polar temperature over the past 150,000 years Grant, K.M. Rohling, E.J. Bar-Matthews, M. Ayalon, A. Medina-Elizalde, M. Ramsey, C. Bronk Satow, C. Roberts, A.P. 2012-11-29 https://eprints.soton.ac.uk/345297/ unknown Grant, K.M., Rohling, E.J., Bar-Matthews, M., Ayalon, A., Medina-Elizalde, M., Ramsey, C. Bronk, Satow, C. and Roberts, A.P. (2012) Rapid coupling between ice volume and polar temperature over the past 150,000 years. Nature, 491, 744-747. (doi:10.1038/nature11593 <http://dx.doi.org/10.1038/nature11593>). Article PeerReviewed 2012 ftsouthampton https://doi.org/10.1038/nature11593 2023-08-03T22:20:07Z 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 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. Article in Journal/Newspaper Antarc* Antarctic Greenland ice core University of Southampton: e-Prints Soton Antarctic Greenland Nature 491 7426 744 747 |
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Open Polar |
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University of Southampton: e-Prints Soton |
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ftsouthampton |
language |
unknown |
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 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. |
format |
Article in Journal/Newspaper |
author |
Grant, K.M. Rohling, E.J. Bar-Matthews, M. Ayalon, A. Medina-Elizalde, M. Ramsey, C. Bronk Satow, C. Roberts, A.P. |
spellingShingle |
Grant, K.M. Rohling, E.J. Bar-Matthews, M. Ayalon, A. Medina-Elizalde, M. Ramsey, C. Bronk Satow, C. Roberts, A.P. Rapid coupling between ice volume and polar temperature over the past 150,000 years |
author_facet |
Grant, K.M. Rohling, E.J. Bar-Matthews, M. Ayalon, A. Medina-Elizalde, M. Ramsey, C. Bronk Satow, C. Roberts, A.P. |
author_sort |
Grant, K.M. |
title |
Rapid coupling between ice volume and polar temperature over the past 150,000 years |
title_short |
Rapid coupling between ice volume and polar temperature over the past 150,000 years |
title_full |
Rapid coupling between ice volume and polar temperature over the past 150,000 years |
title_fullStr |
Rapid coupling between ice volume and polar temperature over the past 150,000 years |
title_full_unstemmed |
Rapid coupling between ice volume and polar temperature over the past 150,000 years |
title_sort |
rapid coupling between ice volume and polar temperature over the past 150,000 years |
publishDate |
2012 |
url |
https://eprints.soton.ac.uk/345297/ |
geographic |
Antarctic Greenland |
geographic_facet |
Antarctic Greenland |
genre |
Antarc* Antarctic Greenland ice core |
genre_facet |
Antarc* Antarctic Greenland ice core |
op_relation |
Grant, K.M., Rohling, E.J., Bar-Matthews, M., Ayalon, A., Medina-Elizalde, M., Ramsey, C. Bronk, Satow, C. and Roberts, A.P. (2012) Rapid coupling between ice volume and polar temperature over the past 150,000 years. Nature, 491, 744-747. (doi:10.1038/nature11593 <http://dx.doi.org/10.1038/nature11593>). |
op_doi |
https://doi.org/10.1038/nature11593 |
container_title |
Nature |
container_volume |
491 |
container_issue |
7426 |
container_start_page |
744 |
op_container_end_page |
747 |
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1775356277437759488 |