Ice mass loss sensitivity to the Antarctic ice sheet basal thermal state
Sea-level rise projections rely on accurate predictions of ice mass loss from Antarctica. Climate change promotes greater mass loss by destabilizing ice shelves and accelerating the discharge of upstream grounded ice. Mass loss is further exacerbated by mechanisms such as the Marine Ice Sheet Instab...
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ftpubmed:oai:pubmedcentral.nih.gov:9474861 2023-05-15T14:05:18+02:00 Ice mass loss sensitivity to the Antarctic ice sheet basal thermal state Dawson, Eliza J. Schroeder, Dustin M. Chu, Winnie Mantelli, Elisa Seroussi, Hélène 2022-09-14 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9474861/ https://doi.org/10.1038/s41467-022-32632-2 en eng Nature Publishing Group UK http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9474861/ http://dx.doi.org/10.1038/s41467-022-32632-2 © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . CC-BY Nat Commun Article Text 2022 ftpubmed https://doi.org/10.1038/s41467-022-32632-2 2022-09-18T00:55:48Z Sea-level rise projections rely on accurate predictions of ice mass loss from Antarctica. Climate change promotes greater mass loss by destabilizing ice shelves and accelerating the discharge of upstream grounded ice. Mass loss is further exacerbated by mechanisms such as the Marine Ice Sheet Instability and the Marine Ice Cliff Instability. However, the effect of basal thermal state changes of grounded ice remains largely unexplored. Here, we use numerical ice sheet modeling to investigate how warmer basal temperatures could affect the Antarctic ice sheet mass balance. We find increased mass loss in response to idealized basal thawing experiments run over 100 years. Most notably, frozen-bed patches could be tenuously sustaining the current ice configuration in parts of George V, Adélie, Enderby, and Kemp Land regions of East Antarctica. With less than 5 degrees of basal warming, these frozen patches may begin to thaw, producing new loci of mass loss. Text Antarc* Antarctic Antarctica East Antarctica Ice Sheet Ice Shelves Kemp Land PubMed Central (PMC) Antarctic East Antarctica Kemp Land ENVELOPE(57.500,57.500,-67.500,-67.500) The Antarctic Nature Communications 13 1 |
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Article Dawson, Eliza J. Schroeder, Dustin M. Chu, Winnie Mantelli, Elisa Seroussi, Hélène Ice mass loss sensitivity to the Antarctic ice sheet basal thermal state |
topic_facet |
Article |
description |
Sea-level rise projections rely on accurate predictions of ice mass loss from Antarctica. Climate change promotes greater mass loss by destabilizing ice shelves and accelerating the discharge of upstream grounded ice. Mass loss is further exacerbated by mechanisms such as the Marine Ice Sheet Instability and the Marine Ice Cliff Instability. However, the effect of basal thermal state changes of grounded ice remains largely unexplored. Here, we use numerical ice sheet modeling to investigate how warmer basal temperatures could affect the Antarctic ice sheet mass balance. We find increased mass loss in response to idealized basal thawing experiments run over 100 years. Most notably, frozen-bed patches could be tenuously sustaining the current ice configuration in parts of George V, Adélie, Enderby, and Kemp Land regions of East Antarctica. With less than 5 degrees of basal warming, these frozen patches may begin to thaw, producing new loci of mass loss. |
format |
Text |
author |
Dawson, Eliza J. Schroeder, Dustin M. Chu, Winnie Mantelli, Elisa Seroussi, Hélène |
author_facet |
Dawson, Eliza J. Schroeder, Dustin M. Chu, Winnie Mantelli, Elisa Seroussi, Hélène |
author_sort |
Dawson, Eliza J. |
title |
Ice mass loss sensitivity to the Antarctic ice sheet basal thermal state |
title_short |
Ice mass loss sensitivity to the Antarctic ice sheet basal thermal state |
title_full |
Ice mass loss sensitivity to the Antarctic ice sheet basal thermal state |
title_fullStr |
Ice mass loss sensitivity to the Antarctic ice sheet basal thermal state |
title_full_unstemmed |
Ice mass loss sensitivity to the Antarctic ice sheet basal thermal state |
title_sort |
ice mass loss sensitivity to the antarctic ice sheet basal thermal state |
publisher |
Nature Publishing Group UK |
publishDate |
2022 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9474861/ https://doi.org/10.1038/s41467-022-32632-2 |
long_lat |
ENVELOPE(57.500,57.500,-67.500,-67.500) |
geographic |
Antarctic East Antarctica Kemp Land The Antarctic |
geographic_facet |
Antarctic East Antarctica Kemp Land The Antarctic |
genre |
Antarc* Antarctic Antarctica East Antarctica Ice Sheet Ice Shelves Kemp Land |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica Ice Sheet Ice Shelves Kemp Land |
op_source |
Nat Commun |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9474861/ http://dx.doi.org/10.1038/s41467-022-32632-2 |
op_rights |
© The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1038/s41467-022-32632-2 |
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Nature Communications |
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13 |
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1 |
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1766277106929500160 |