Early Last Interglacial ocean warming drove substantial ice mass loss from Antarctica
The future response of the Antarctic ice sheets to rising temperatures remains highly uncertain. A valuable analogue for assessing the sensitivity of Antarctica to warming is the Last Interglacial (129-116 kyr), when global sea level peaked 6 to 9 meters above present. Here we report a blue-ice reco...
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ftdatacite:10.17605/osf.io/3z69p 2023-05-15T13:36:44+02:00 Early Last Interglacial ocean warming drove substantial ice mass loss from Antarctica Turney, Chris Fogwill, Christopher Golledge, Nicholas McKay, Nicholas van Sebille, Erik Jones, Richard Etheridge, David Rubino, Mauro Thornton, David Davies, Siwan Bronk Ramsey, Christopher Thomas, Zoë Bird, Michael Munksgaard, Niels Kohno, Mika Woodward, John Winter, Kate Weyrich, Laura Rootes, Camilla Millman, Helen Albert, Paul Rivera, Andres van Ommen, Tas Curran, Mark Moy, Andrew Rahmstorf, Stefan Kawamura, Kenji Hillenbrand, Claus-Dieter Weber, Michael Manning, Christina Young, Jennifer Cooper, Alan 2019 https://dx.doi.org/10.17605/osf.io/3z69p https://osf.io/3z69p/ unknown Open Science Framework Project Text article-journal ScholarlyArticle 2019 ftdatacite https://doi.org/10.17605/osf.io/3z69p 2021-11-05T12:55:41Z The future response of the Antarctic ice sheets to rising temperatures remains highly uncertain. A valuable analogue for assessing the sensitivity of Antarctica to warming is the Last Interglacial (129-116 kyr), when global sea level peaked 6 to 9 meters above present. Here we report a blue-ice record of ice-sheet and environmental change from the periphery of the marine-based West Antarctic Ice Sheet (WAIS). Constrained by a widespread volcanic horizon and supported by ancient microbial DNA analyses, we provide the first direct evidence for Last Interglacial WAIS collapse, driven by ocean warming and associated with destabilization of sub-glacial hydrates. Ice-sheet modelling supports this interpretation and suggests a 2˚C warming of the Southern Ocean over a millennia could trigger a ~3.2 meter rise in global sea levels. Our data indicate Antarctica is highly vulnerable to projected increases in ocean temperatures and may drive ice-climate feedbacks that further amplify warming. Text Antarc* Antarctic Antarctica Ice Sheet Southern Ocean DataCite Metadata Store (German National Library of Science and Technology) Antarctic Southern Ocean The Antarctic West Antarctic Ice Sheet |
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DataCite Metadata Store (German National Library of Science and Technology) |
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The future response of the Antarctic ice sheets to rising temperatures remains highly uncertain. A valuable analogue for assessing the sensitivity of Antarctica to warming is the Last Interglacial (129-116 kyr), when global sea level peaked 6 to 9 meters above present. Here we report a blue-ice record of ice-sheet and environmental change from the periphery of the marine-based West Antarctic Ice Sheet (WAIS). Constrained by a widespread volcanic horizon and supported by ancient microbial DNA analyses, we provide the first direct evidence for Last Interglacial WAIS collapse, driven by ocean warming and associated with destabilization of sub-glacial hydrates. Ice-sheet modelling supports this interpretation and suggests a 2˚C warming of the Southern Ocean over a millennia could trigger a ~3.2 meter rise in global sea levels. Our data indicate Antarctica is highly vulnerable to projected increases in ocean temperatures and may drive ice-climate feedbacks that further amplify warming. |
format |
Text |
author |
Turney, Chris Fogwill, Christopher Golledge, Nicholas McKay, Nicholas van Sebille, Erik Jones, Richard Etheridge, David Rubino, Mauro Thornton, David Davies, Siwan Bronk Ramsey, Christopher Thomas, Zoë Bird, Michael Munksgaard, Niels Kohno, Mika Woodward, John Winter, Kate Weyrich, Laura Rootes, Camilla Millman, Helen Albert, Paul Rivera, Andres van Ommen, Tas Curran, Mark Moy, Andrew Rahmstorf, Stefan Kawamura, Kenji Hillenbrand, Claus-Dieter Weber, Michael Manning, Christina Young, Jennifer Cooper, Alan |
spellingShingle |
Turney, Chris Fogwill, Christopher Golledge, Nicholas McKay, Nicholas van Sebille, Erik Jones, Richard Etheridge, David Rubino, Mauro Thornton, David Davies, Siwan Bronk Ramsey, Christopher Thomas, Zoë Bird, Michael Munksgaard, Niels Kohno, Mika Woodward, John Winter, Kate Weyrich, Laura Rootes, Camilla Millman, Helen Albert, Paul Rivera, Andres van Ommen, Tas Curran, Mark Moy, Andrew Rahmstorf, Stefan Kawamura, Kenji Hillenbrand, Claus-Dieter Weber, Michael Manning, Christina Young, Jennifer Cooper, Alan Early Last Interglacial ocean warming drove substantial ice mass loss from Antarctica |
author_facet |
Turney, Chris Fogwill, Christopher Golledge, Nicholas McKay, Nicholas van Sebille, Erik Jones, Richard Etheridge, David Rubino, Mauro Thornton, David Davies, Siwan Bronk Ramsey, Christopher Thomas, Zoë Bird, Michael Munksgaard, Niels Kohno, Mika Woodward, John Winter, Kate Weyrich, Laura Rootes, Camilla Millman, Helen Albert, Paul Rivera, Andres van Ommen, Tas Curran, Mark Moy, Andrew Rahmstorf, Stefan Kawamura, Kenji Hillenbrand, Claus-Dieter Weber, Michael Manning, Christina Young, Jennifer Cooper, Alan |
author_sort |
Turney, Chris |
title |
Early Last Interglacial ocean warming drove substantial ice mass loss from Antarctica |
title_short |
Early Last Interglacial ocean warming drove substantial ice mass loss from Antarctica |
title_full |
Early Last Interglacial ocean warming drove substantial ice mass loss from Antarctica |
title_fullStr |
Early Last Interglacial ocean warming drove substantial ice mass loss from Antarctica |
title_full_unstemmed |
Early Last Interglacial ocean warming drove substantial ice mass loss from Antarctica |
title_sort |
early last interglacial ocean warming drove substantial ice mass loss from antarctica |
publisher |
Open Science Framework |
publishDate |
2019 |
url |
https://dx.doi.org/10.17605/osf.io/3z69p https://osf.io/3z69p/ |
geographic |
Antarctic Southern Ocean The Antarctic West Antarctic Ice Sheet |
geographic_facet |
Antarctic Southern Ocean The Antarctic West Antarctic Ice Sheet |
genre |
Antarc* Antarctic Antarctica Ice Sheet Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctica Ice Sheet Southern Ocean |
op_doi |
https://doi.org/10.17605/osf.io/3z69p |
_version_ |
1766083333830213632 |