Simulated twentieth-century ocean warming in the Amundsen Sea, West Antarctica
Rapid ice loss is occurring in the Amundsen Sea sector of the West Antarctic Ice Sheet. This ice loss is assumed to be a long-term response to oceanographic forcing, but ocean conditions in the Amundsen Sea are unknown prior to 1994. Here we present a modeling study of Amundsen Sea conditions from 1...
Published in: | Geophysical Research Letters |
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American Geophysical Union
2022
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Online Access: | http://nora.nerc.ac.uk/id/eprint/530453/ https://nora.nerc.ac.uk/id/eprint/530453/1/Geophysical%20Research%20Letters%20-%202022%20-%20Naughten%20-%20Simulated%20Twentieth%E2%80%90Century%20Ocean%20Warming%20in%20the%20Amundsen%20Sea%20West.pdf https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2021GL094566 |
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ftnerc:oai:nora.nerc.ac.uk:530453 2023-05-15T13:23:24+02:00 Simulated twentieth-century ocean warming in the Amundsen Sea, West Antarctica Naughten, Kaitlin A. Holland, Paul R. Dutrieux, Pierre Kimura, Satoshi Bett, David T. Jenkins, Adrian 2022-03-16 text http://nora.nerc.ac.uk/id/eprint/530453/ https://nora.nerc.ac.uk/id/eprint/530453/1/Geophysical%20Research%20Letters%20-%202022%20-%20Naughten%20-%20Simulated%20Twentieth%E2%80%90Century%20Ocean%20Warming%20in%20the%20Amundsen%20Sea%20West.pdf https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2021GL094566 en eng American Geophysical Union https://nora.nerc.ac.uk/id/eprint/530453/1/Geophysical%20Research%20Letters%20-%202022%20-%20Naughten%20-%20Simulated%20Twentieth%E2%80%90Century%20Ocean%20Warming%20in%20the%20Amundsen%20Sea%20West.pdf Naughten, Kaitlin A. orcid:0000-0001-9475-9162 Holland, Paul R. orcid:0000-0001-8370-289X Dutrieux, Pierre orcid:0000-0002-8066-934X Kimura, Satoshi; Bett, David T. orcid:0000-0003-3118-9902 Jenkins, Adrian. 2022 Simulated twentieth-century ocean warming in the Amundsen Sea, West Antarctica. Geophysical Research Letters, 49 (5), e2021GL094566. 10, pp. https://doi.org/10.1029/2021GL094566 <https://doi.org/10.1029/2021GL094566> cc_by_4 CC-BY Publication - Article PeerReviewed 2022 ftnerc https://doi.org/10.1029/2021GL094566 2023-02-04T19:52:12Z Rapid ice loss is occurring in the Amundsen Sea sector of the West Antarctic Ice Sheet. This ice loss is assumed to be a long-term response to oceanographic forcing, but ocean conditions in the Amundsen Sea are unknown prior to 1994. Here we present a modeling study of Amundsen Sea conditions from 1920 to 2013, using an ensemble of ice-ocean simulations forced by climate model experiments. We find that during the early twentieth century, the Amundsen Sea likely experienced more sustained cool periods than at present. Warm periods become more dominant over the simulations (mean trend 0.33°C/century) causing an increase in ice shelf melting. The warming is likely driven by an eastward wind trend over the continental shelf break that is partly anthropogenically forced. Our simulations suggest that the Amundsen Sea responded to historical greenhouse gas forcing, and that future changes in emissions are also likely to affect the region. Article in Journal/Newspaper Amundsen Sea Antarc* Antarctic Antarctica Ice Sheet Ice Shelf West Antarctica Natural Environment Research Council: NERC Open Research Archive Amundsen Sea Antarctic West Antarctic Ice Sheet West Antarctica Geophysical Research Letters 49 5 |
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Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
description |
Rapid ice loss is occurring in the Amundsen Sea sector of the West Antarctic Ice Sheet. This ice loss is assumed to be a long-term response to oceanographic forcing, but ocean conditions in the Amundsen Sea are unknown prior to 1994. Here we present a modeling study of Amundsen Sea conditions from 1920 to 2013, using an ensemble of ice-ocean simulations forced by climate model experiments. We find that during the early twentieth century, the Amundsen Sea likely experienced more sustained cool periods than at present. Warm periods become more dominant over the simulations (mean trend 0.33°C/century) causing an increase in ice shelf melting. The warming is likely driven by an eastward wind trend over the continental shelf break that is partly anthropogenically forced. Our simulations suggest that the Amundsen Sea responded to historical greenhouse gas forcing, and that future changes in emissions are also likely to affect the region. |
format |
Article in Journal/Newspaper |
author |
Naughten, Kaitlin A. Holland, Paul R. Dutrieux, Pierre Kimura, Satoshi Bett, David T. Jenkins, Adrian |
spellingShingle |
Naughten, Kaitlin A. Holland, Paul R. Dutrieux, Pierre Kimura, Satoshi Bett, David T. Jenkins, Adrian Simulated twentieth-century ocean warming in the Amundsen Sea, West Antarctica |
author_facet |
Naughten, Kaitlin A. Holland, Paul R. Dutrieux, Pierre Kimura, Satoshi Bett, David T. Jenkins, Adrian |
author_sort |
Naughten, Kaitlin A. |
title |
Simulated twentieth-century ocean warming in the Amundsen Sea, West Antarctica |
title_short |
Simulated twentieth-century ocean warming in the Amundsen Sea, West Antarctica |
title_full |
Simulated twentieth-century ocean warming in the Amundsen Sea, West Antarctica |
title_fullStr |
Simulated twentieth-century ocean warming in the Amundsen Sea, West Antarctica |
title_full_unstemmed |
Simulated twentieth-century ocean warming in the Amundsen Sea, West Antarctica |
title_sort |
simulated twentieth-century ocean warming in the amundsen sea, west antarctica |
publisher |
American Geophysical Union |
publishDate |
2022 |
url |
http://nora.nerc.ac.uk/id/eprint/530453/ https://nora.nerc.ac.uk/id/eprint/530453/1/Geophysical%20Research%20Letters%20-%202022%20-%20Naughten%20-%20Simulated%20Twentieth%E2%80%90Century%20Ocean%20Warming%20in%20the%20Amundsen%20Sea%20West.pdf https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2021GL094566 |
geographic |
Amundsen Sea Antarctic West Antarctic Ice Sheet West Antarctica |
geographic_facet |
Amundsen Sea Antarctic West Antarctic Ice Sheet West Antarctica |
genre |
Amundsen Sea Antarc* Antarctic Antarctica Ice Sheet Ice Shelf West Antarctica |
genre_facet |
Amundsen Sea Antarc* Antarctic Antarctica Ice Sheet Ice Shelf West Antarctica |
op_relation |
https://nora.nerc.ac.uk/id/eprint/530453/1/Geophysical%20Research%20Letters%20-%202022%20-%20Naughten%20-%20Simulated%20Twentieth%E2%80%90Century%20Ocean%20Warming%20in%20the%20Amundsen%20Sea%20West.pdf Naughten, Kaitlin A. orcid:0000-0001-9475-9162 Holland, Paul R. orcid:0000-0001-8370-289X Dutrieux, Pierre orcid:0000-0002-8066-934X Kimura, Satoshi; Bett, David T. orcid:0000-0003-3118-9902 Jenkins, Adrian. 2022 Simulated twentieth-century ocean warming in the Amundsen Sea, West Antarctica. Geophysical Research Letters, 49 (5), e2021GL094566. 10, pp. https://doi.org/10.1029/2021GL094566 <https://doi.org/10.1029/2021GL094566> |
op_rights |
cc_by_4 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1029/2021GL094566 |
container_title |
Geophysical Research Letters |
container_volume |
49 |
container_issue |
5 |
_version_ |
1766371989474246656 |