Asynchronous Antarctic and Greenland ice-volume contributions to the last interglacial sea-level highstand

The last interglacial (LIG; ~130 to ~118 thousand years ago, ka) was the last time global sea level rose well above the present level. Greenland Ice Sheet (GrIS) contributions were insufficient to explain the highstand, so that substantial Antarctic Ice Sheet (AIS) reduction is implied. However, the...

Full description

Bibliographic Details
Published in:Nature Communications
Main Authors: Rohling, Eelco, Hibbert, Fiona, Grant, Katharine, Galaasen, Eirik V., Irvalı, Nil, Kleiven, Helga F., Marino, Gianluca, Ninnemann, Ulysses, Roberts, Andrew P., Rosenthal, Y, Schulz, H, Williams, Felicity, Yu, Jimin
Format: Article in Journal/Newspaper
Language:English
Published: Macmillan Publishers Ltd
Subjects:
Online Access:http://hdl.handle.net/1885/206419
https://doi.org/10.1038/s41467-019-12874-3
https://openresearch-repository.anu.edu.au/bitstream/1885/206419/3/01_Rohling_Asynchronous_Antarctic_and_2019.pdf.jpg
id ftanucanberra:oai:openresearch-repository.anu.edu.au:1885/206419
record_format openpolar
spelling ftanucanberra:oai:openresearch-repository.anu.edu.au:1885/206419 2024-01-14T10:02:27+01:00 Asynchronous Antarctic and Greenland ice-volume contributions to the last interglacial sea-level highstand Rohling, Eelco Hibbert, Fiona Grant, Katharine Galaasen, Eirik V. Irvalı, Nil Kleiven, Helga F. Marino, Gianluca Ninnemann, Ulysses Roberts, Andrew P. Rosenthal, Y Schulz, H Williams, Felicity Yu, Jimin application/pdf http://hdl.handle.net/1885/206419 https://doi.org/10.1038/s41467-019-12874-3 https://openresearch-repository.anu.edu.au/bitstream/1885/206419/3/01_Rohling_Asynchronous_Antarctic_and_2019.pdf.jpg en_AU eng Macmillan Publishers Ltd http://purl.org/au-research/grants/arc/FL120100050 2041-1723 http://hdl.handle.net/1885/206419 doi:10.1038/s41467-019-12874-3 https://openresearch-repository.anu.edu.au/bitstream/1885/206419/3/01_Rohling_Asynchronous_Antarctic_and_2019.pdf.jpg © The Author(s) 2019 http://creativecommons.org/ licenses/by/4.0/ Creative Commons Attribution License Nature Communications Journal article ftanucanberra https://doi.org/10.1038/s41467-019-12874-3 2023-12-15T09:34:14Z The last interglacial (LIG; ~130 to ~118 thousand years ago, ka) was the last time global sea level rose well above the present level. Greenland Ice Sheet (GrIS) contributions were insufficient to explain the highstand, so that substantial Antarctic Ice Sheet (AIS) reduction is implied. However, the nature and drivers of GrIS and AIS reductions remain enigmatic, even though they may be critical for understanding future sea-level rise. Here we complement existing records with new data, and reveal that the LIG contained an AIS-derived highstand from ~129.5 to ~125 ka, a lowstand centred on 125–124 ka, and joint AIS + GrIS contributions from ~123.5 to ~118 ka. Moreover, a dual substructure within the first highstand suggests temporal variability in the AIS contributions. Implied rates of sea-level rise are high (up to several meters per century; m c−1 ), and lend credibility to high rates inferred by ice modelling under certain ice-shelf instability parameterisations. This research contributes to Australian Research Council Laureate Fellowship FL120100050 (to E.J.R.). UiB contribution (to E.V.G., N.I., K.K. and U.N.) supported by RCN project THRESHOLDS (25496). G.M. acknowledges generous support from the University of Vigo Article in Journal/Newspaper Antarc* Antarctic Greenland Ice Sheet Ice Shelf Australian National University: ANU Digital Collections Antarctic Greenland Nature Communications 10 1
institution Open Polar
collection Australian National University: ANU Digital Collections
op_collection_id ftanucanberra
language English
description The last interglacial (LIG; ~130 to ~118 thousand years ago, ka) was the last time global sea level rose well above the present level. Greenland Ice Sheet (GrIS) contributions were insufficient to explain the highstand, so that substantial Antarctic Ice Sheet (AIS) reduction is implied. However, the nature and drivers of GrIS and AIS reductions remain enigmatic, even though they may be critical for understanding future sea-level rise. Here we complement existing records with new data, and reveal that the LIG contained an AIS-derived highstand from ~129.5 to ~125 ka, a lowstand centred on 125–124 ka, and joint AIS + GrIS contributions from ~123.5 to ~118 ka. Moreover, a dual substructure within the first highstand suggests temporal variability in the AIS contributions. Implied rates of sea-level rise are high (up to several meters per century; m c−1 ), and lend credibility to high rates inferred by ice modelling under certain ice-shelf instability parameterisations. This research contributes to Australian Research Council Laureate Fellowship FL120100050 (to E.J.R.). UiB contribution (to E.V.G., N.I., K.K. and U.N.) supported by RCN project THRESHOLDS (25496). G.M. acknowledges generous support from the University of Vigo
format Article in Journal/Newspaper
author Rohling, Eelco
Hibbert, Fiona
Grant, Katharine
Galaasen, Eirik V.
Irvalı, Nil
Kleiven, Helga F.
Marino, Gianluca
Ninnemann, Ulysses
Roberts, Andrew P.
Rosenthal, Y
Schulz, H
Williams, Felicity
Yu, Jimin
spellingShingle Rohling, Eelco
Hibbert, Fiona
Grant, Katharine
Galaasen, Eirik V.
Irvalı, Nil
Kleiven, Helga F.
Marino, Gianluca
Ninnemann, Ulysses
Roberts, Andrew P.
Rosenthal, Y
Schulz, H
Williams, Felicity
Yu, Jimin
Asynchronous Antarctic and Greenland ice-volume contributions to the last interglacial sea-level highstand
author_facet Rohling, Eelco
Hibbert, Fiona
Grant, Katharine
Galaasen, Eirik V.
Irvalı, Nil
Kleiven, Helga F.
Marino, Gianluca
Ninnemann, Ulysses
Roberts, Andrew P.
Rosenthal, Y
Schulz, H
Williams, Felicity
Yu, Jimin
author_sort Rohling, Eelco
title Asynchronous Antarctic and Greenland ice-volume contributions to the last interglacial sea-level highstand
title_short Asynchronous Antarctic and Greenland ice-volume contributions to the last interglacial sea-level highstand
title_full Asynchronous Antarctic and Greenland ice-volume contributions to the last interglacial sea-level highstand
title_fullStr Asynchronous Antarctic and Greenland ice-volume contributions to the last interglacial sea-level highstand
title_full_unstemmed Asynchronous Antarctic and Greenland ice-volume contributions to the last interglacial sea-level highstand
title_sort asynchronous antarctic and greenland ice-volume contributions to the last interglacial sea-level highstand
publisher Macmillan Publishers Ltd
url http://hdl.handle.net/1885/206419
https://doi.org/10.1038/s41467-019-12874-3
https://openresearch-repository.anu.edu.au/bitstream/1885/206419/3/01_Rohling_Asynchronous_Antarctic_and_2019.pdf.jpg
geographic Antarctic
Greenland
geographic_facet Antarctic
Greenland
genre Antarc*
Antarctic
Greenland
Ice Sheet
Ice Shelf
genre_facet Antarc*
Antarctic
Greenland
Ice Sheet
Ice Shelf
op_source Nature Communications
op_relation http://purl.org/au-research/grants/arc/FL120100050
2041-1723
http://hdl.handle.net/1885/206419
doi:10.1038/s41467-019-12874-3
https://openresearch-repository.anu.edu.au/bitstream/1885/206419/3/01_Rohling_Asynchronous_Antarctic_and_2019.pdf.jpg
op_rights © The Author(s) 2019
http://creativecommons.org/ licenses/by/4.0/
Creative Commons Attribution License
op_doi https://doi.org/10.1038/s41467-019-12874-3
container_title Nature Communications
container_volume 10
container_issue 1
_version_ 1788057474931097600