Sea level rise from West Antarctic mass loss significantly modified by large snowfall anomalies
Mass loss from the West Antarctic Ice Sheet is dominated by glaciers draining into the Amundsen Sea Embayment (ASE), yet the impact of anomalous precipitation on the mass balance of the ASE is poorly known. Here we present a 25-year (1996–2021) record of ASE input-output mass balance and evaluate ho...
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ftpubmed:oai:pubmedcentral.nih.gov:10023770 2023-05-15T13:24:05+02:00 Sea level rise from West Antarctic mass loss significantly modified by large snowfall anomalies Davison, Benjamin J. Hogg, Anna E. Rigby, Richard Veldhuijsen, Sanne van Wessem, Jan Melchior van den Broeke, Michiel R. Holland, Paul R. Selley, Heather L. Dutrieux, Pierre 2023-03-17 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10023770/ http://www.ncbi.nlm.nih.gov/pubmed/36932070 https://doi.org/10.1038/s41467-023-36990-3 en eng Nature Publishing Group UK http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10023770/ http://www.ncbi.nlm.nih.gov/pubmed/36932070 http://dx.doi.org/10.1038/s41467-023-36990-3 © The Author(s) 2023 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/) . Nat Commun Article Text 2023 ftpubmed https://doi.org/10.1038/s41467-023-36990-3 2023-03-26T01:52:04Z Mass loss from the West Antarctic Ice Sheet is dominated by glaciers draining into the Amundsen Sea Embayment (ASE), yet the impact of anomalous precipitation on the mass balance of the ASE is poorly known. Here we present a 25-year (1996–2021) record of ASE input-output mass balance and evaluate how two periods of anomalous precipitation affected its sea level contribution. Since 1996, the ASE has lost 3331 ± 424 Gt ice, contributing 9.2 ± 1.2 mm to global sea level. Overall, surface mass balance anomalies contributed little (7.7%) to total mass loss; however, two anomalous precipitation events had larger, albeit short-lived, impacts on rates of mass change. During 2009–2013, persistently low snowfall led to an additional 51 ± 4 Gt yr(−1) mass loss in those years (contributing positively to the total loss of 195 ± 4 Gt yr(−1)). Contrastingly, extreme precipitation in the winters of 2019 and 2020 decreased mass loss by 60 ± 16 Gt yr(−1) during those years (contributing negatively to the total loss of 107 ± 15 Gt yr(−1)). These results emphasise the important impact of extreme snowfall variability on the short-term sea level contribution from West Antarctica. Text Amundsen Sea Antarc* Antarctic Antarctica Ice Sheet West Antarctica PubMed Central (PMC) Amundsen Sea Antarctic West Antarctic Ice Sheet West Antarctica Nature Communications 14 1 |
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Article Davison, Benjamin J. Hogg, Anna E. Rigby, Richard Veldhuijsen, Sanne van Wessem, Jan Melchior van den Broeke, Michiel R. Holland, Paul R. Selley, Heather L. Dutrieux, Pierre Sea level rise from West Antarctic mass loss significantly modified by large snowfall anomalies |
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Article |
description |
Mass loss from the West Antarctic Ice Sheet is dominated by glaciers draining into the Amundsen Sea Embayment (ASE), yet the impact of anomalous precipitation on the mass balance of the ASE is poorly known. Here we present a 25-year (1996–2021) record of ASE input-output mass balance and evaluate how two periods of anomalous precipitation affected its sea level contribution. Since 1996, the ASE has lost 3331 ± 424 Gt ice, contributing 9.2 ± 1.2 mm to global sea level. Overall, surface mass balance anomalies contributed little (7.7%) to total mass loss; however, two anomalous precipitation events had larger, albeit short-lived, impacts on rates of mass change. During 2009–2013, persistently low snowfall led to an additional 51 ± 4 Gt yr(−1) mass loss in those years (contributing positively to the total loss of 195 ± 4 Gt yr(−1)). Contrastingly, extreme precipitation in the winters of 2019 and 2020 decreased mass loss by 60 ± 16 Gt yr(−1) during those years (contributing negatively to the total loss of 107 ± 15 Gt yr(−1)). These results emphasise the important impact of extreme snowfall variability on the short-term sea level contribution from West Antarctica. |
format |
Text |
author |
Davison, Benjamin J. Hogg, Anna E. Rigby, Richard Veldhuijsen, Sanne van Wessem, Jan Melchior van den Broeke, Michiel R. Holland, Paul R. Selley, Heather L. Dutrieux, Pierre |
author_facet |
Davison, Benjamin J. Hogg, Anna E. Rigby, Richard Veldhuijsen, Sanne van Wessem, Jan Melchior van den Broeke, Michiel R. Holland, Paul R. Selley, Heather L. Dutrieux, Pierre |
author_sort |
Davison, Benjamin J. |
title |
Sea level rise from West Antarctic mass loss significantly modified by large snowfall anomalies |
title_short |
Sea level rise from West Antarctic mass loss significantly modified by large snowfall anomalies |
title_full |
Sea level rise from West Antarctic mass loss significantly modified by large snowfall anomalies |
title_fullStr |
Sea level rise from West Antarctic mass loss significantly modified by large snowfall anomalies |
title_full_unstemmed |
Sea level rise from West Antarctic mass loss significantly modified by large snowfall anomalies |
title_sort |
sea level rise from west antarctic mass loss significantly modified by large snowfall anomalies |
publisher |
Nature Publishing Group UK |
publishDate |
2023 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10023770/ http://www.ncbi.nlm.nih.gov/pubmed/36932070 https://doi.org/10.1038/s41467-023-36990-3 |
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 West Antarctica |
genre_facet |
Amundsen Sea Antarc* Antarctic Antarctica Ice Sheet West Antarctica |
op_source |
Nat Commun |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10023770/ http://www.ncbi.nlm.nih.gov/pubmed/36932070 http://dx.doi.org/10.1038/s41467-023-36990-3 |
op_rights |
© The Author(s) 2023 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_doi |
https://doi.org/10.1038/s41467-023-36990-3 |
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Nature Communications |
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14 |
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1 |
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1766377356640911360 |