Genomic evidence for West Antarctic Ice Sheet collapse during the Last Interglacial

The marine-based West Antarctic Ice Sheet (WAIS) is considered vulnerable to irreversible collapse under future climate trajectories, and its tipping point may lie within the mitigated warming scenarios of 1.5° to 2°C of the United Nations Paris Agreement. Knowledge of ice loss during similarly warm...

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Published in:Science
Main Authors: Lau, Sally C. Y., Wilson, Nerida G., Golledge, Nicholas R., Naish, Tim R., Watts, Phillip C., Silva, Catarina N. S., Cooke, Ira R., Allcock, A. Louise, Mark, Felix C., Linse, Katrin, Strugnell, Jan M.
Format: Article in Journal/Newspaper
Language:unknown
Published: American Association for the Advancement of Science 2023
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Online Access:https://researchonline.jcu.edu.au/82677/1/82677.pdf
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spelling ftjamescook:oai:researchonline.jcu.edu.au:82677 2024-06-02T07:58:28+00:00 Genomic evidence for West Antarctic Ice Sheet collapse during the Last Interglacial Lau, Sally C. Y. Wilson, Nerida G. Golledge, Nicholas R. Naish, Tim R. Watts, Phillip C. Silva, Catarina N. S. Cooke, Ira R. Allcock, A. Louise Mark, Felix C. Linse, Katrin Strugnell, Jan M. 2023 application/pdf https://researchonline.jcu.edu.au/82677/1/82677.pdf unknown American Association for the Advancement of Science https://doi.org/10.1126/science.ade0664 https://researchonline.jcu.edu.au/82677/ https://researchonline.jcu.edu.au/82677/1/82677.pdf Lau, Sally C. Y., Wilson, Nerida G., Golledge, Nicholas R., Naish, Tim R., Watts, Phillip C., Silva, Catarina N. S., Cooke, Ira R., Allcock, A. Louise, Mark, Felix C., Linse, Katrin, and Strugnell, Jan M. (2023) Genomic evidence for West Antarctic Ice Sheet collapse during the Last Interglacial. Science, 382. pp. 1384-1389. restricted Article PeerReviewed 2023 ftjamescook https://doi.org/10.1126/science.ade0664 2024-05-07T23:36:10Z The marine-based West Antarctic Ice Sheet (WAIS) is considered vulnerable to irreversible collapse under future climate trajectories, and its tipping point may lie within the mitigated warming scenarios of 1.5° to 2°C of the United Nations Paris Agreement. Knowledge of ice loss during similarly warm past climates could resolve this uncertainty, including the Last Interglacial when global sea levels were 5 to 10 meters higher than today and global average temperatures were 0.5° to 1.5°C warmer than preindustrial levels. Using a panel of genome-wide, single-nucleotide polymorphisms of a circum-Antarctic octopus, we show persistent, historic signals of gene flow only possible with complete WAIS collapse. Our results provide the first empirical evidence that the tipping point of WAIS loss could be reached even under stringent climate mitigation scenarios. Article in Journal/Newspaper Antarc* Antarctic Antarctic Octopus Ice Sheet James Cook University, Australia: ResearchOnline@JCU Antarctic West Antarctic Ice Sheet Science 382 6677 1384 1389
institution Open Polar
collection James Cook University, Australia: ResearchOnline@JCU
op_collection_id ftjamescook
language unknown
description The marine-based West Antarctic Ice Sheet (WAIS) is considered vulnerable to irreversible collapse under future climate trajectories, and its tipping point may lie within the mitigated warming scenarios of 1.5° to 2°C of the United Nations Paris Agreement. Knowledge of ice loss during similarly warm past climates could resolve this uncertainty, including the Last Interglacial when global sea levels were 5 to 10 meters higher than today and global average temperatures were 0.5° to 1.5°C warmer than preindustrial levels. Using a panel of genome-wide, single-nucleotide polymorphisms of a circum-Antarctic octopus, we show persistent, historic signals of gene flow only possible with complete WAIS collapse. Our results provide the first empirical evidence that the tipping point of WAIS loss could be reached even under stringent climate mitigation scenarios.
format Article in Journal/Newspaper
author Lau, Sally C. Y.
Wilson, Nerida G.
Golledge, Nicholas R.
Naish, Tim R.
Watts, Phillip C.
Silva, Catarina N. S.
Cooke, Ira R.
Allcock, A. Louise
Mark, Felix C.
Linse, Katrin
Strugnell, Jan M.
spellingShingle Lau, Sally C. Y.
Wilson, Nerida G.
Golledge, Nicholas R.
Naish, Tim R.
Watts, Phillip C.
Silva, Catarina N. S.
Cooke, Ira R.
Allcock, A. Louise
Mark, Felix C.
Linse, Katrin
Strugnell, Jan M.
Genomic evidence for West Antarctic Ice Sheet collapse during the Last Interglacial
author_facet Lau, Sally C. Y.
Wilson, Nerida G.
Golledge, Nicholas R.
Naish, Tim R.
Watts, Phillip C.
Silva, Catarina N. S.
Cooke, Ira R.
Allcock, A. Louise
Mark, Felix C.
Linse, Katrin
Strugnell, Jan M.
author_sort Lau, Sally C. Y.
title Genomic evidence for West Antarctic Ice Sheet collapse during the Last Interglacial
title_short Genomic evidence for West Antarctic Ice Sheet collapse during the Last Interglacial
title_full Genomic evidence for West Antarctic Ice Sheet collapse during the Last Interglacial
title_fullStr Genomic evidence for West Antarctic Ice Sheet collapse during the Last Interglacial
title_full_unstemmed Genomic evidence for West Antarctic Ice Sheet collapse during the Last Interglacial
title_sort genomic evidence for west antarctic ice sheet collapse during the last interglacial
publisher American Association for the Advancement of Science
publishDate 2023
url https://researchonline.jcu.edu.au/82677/1/82677.pdf
geographic Antarctic
West Antarctic Ice Sheet
geographic_facet Antarctic
West Antarctic Ice Sheet
genre Antarc*
Antarctic
Antarctic Octopus
Ice Sheet
genre_facet Antarc*
Antarctic
Antarctic Octopus
Ice Sheet
op_relation https://doi.org/10.1126/science.ade0664
https://researchonline.jcu.edu.au/82677/
https://researchonline.jcu.edu.au/82677/1/82677.pdf
Lau, Sally C. Y., Wilson, Nerida G., Golledge, Nicholas R., Naish, Tim R., Watts, Phillip C., Silva, Catarina N. S., Cooke, Ira R., Allcock, A. Louise, Mark, Felix C., Linse, Katrin, and Strugnell, Jan M. (2023) Genomic evidence for West Antarctic Ice Sheet collapse during the Last Interglacial. Science, 382. pp. 1384-1389.
op_rights restricted
op_doi https://doi.org/10.1126/science.ade0664
container_title Science
container_volume 382
container_issue 6677
container_start_page 1384
op_container_end_page 1389
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