Annual mass budget of Antarctic ice shelves from 1997 to 2021
Antarctic ice shelves moderate the contribution of the Antarctic Ice Sheet to global sea level rise; however, ice shelf health remains poorly constrained. Here, we present the annual mass budget of all Antarctic ice shelves from 1997 to 2021. Out of 162 ice shelves, 71 lost mass, 29 gained mass, and...
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American Association for the Advancement of Science (AAAS)
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Online Access: | http://dx.doi.org/10.1126/sciadv.adi0186 https://www.science.org/doi/pdf/10.1126/sciadv.adi0186 |
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craaas:10.1126/sciadv.adi0186 2024-06-09T07:40:28+00:00 Annual mass budget of Antarctic ice shelves from 1997 to 2021 Davison, Benjamin J. Hogg, Anna E. Gourmelen, Noel Jakob, Livia Wuite, Jan Nagler, Thomas Greene, Chad A. Andreasen, Julia Engdahl, Marcus E. 2023 http://dx.doi.org/10.1126/sciadv.adi0186 https://www.science.org/doi/pdf/10.1126/sciadv.adi0186 en eng American Association for the Advancement of Science (AAAS) Science Advances volume 9, issue 41 ISSN 2375-2548 journal-article 2023 craaas https://doi.org/10.1126/sciadv.adi0186 2024-05-16T12:54:10Z Antarctic ice shelves moderate the contribution of the Antarctic Ice Sheet to global sea level rise; however, ice shelf health remains poorly constrained. Here, we present the annual mass budget of all Antarctic ice shelves from 1997 to 2021. Out of 162 ice shelves, 71 lost mass, 29 gained mass, and 62 did not change mass significantly. Of the shelves that lost mass, 68 had statistically significant negative mass trends, 48 lost more than 30% of their initial mass, and basal melting was the dominant contributor to that mass loss at a majority (68%). At many ice shelves, mass losses due to basal melting or iceberg calving were significantly positively correlated with grounding line discharge anomalies; however, the strength and form of this relationship varied substantially between ice shelves. Our results illustrate the utility of partitioning high-resolution ice shelf mass balance observations into its components to quantify the contributors to ice shelf mass change and the response of grounded ice. Article in Journal/Newspaper Antarc* Antarctic Ice Sheet Ice Shelf Ice Shelves Iceberg* AAAS Resource Center (American Association for the Advancement of Science) Antarctic The Antarctic Science Advances 9 41 |
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Open Polar |
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AAAS Resource Center (American Association for the Advancement of Science) |
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craaas |
language |
English |
description |
Antarctic ice shelves moderate the contribution of the Antarctic Ice Sheet to global sea level rise; however, ice shelf health remains poorly constrained. Here, we present the annual mass budget of all Antarctic ice shelves from 1997 to 2021. Out of 162 ice shelves, 71 lost mass, 29 gained mass, and 62 did not change mass significantly. Of the shelves that lost mass, 68 had statistically significant negative mass trends, 48 lost more than 30% of their initial mass, and basal melting was the dominant contributor to that mass loss at a majority (68%). At many ice shelves, mass losses due to basal melting or iceberg calving were significantly positively correlated with grounding line discharge anomalies; however, the strength and form of this relationship varied substantially between ice shelves. Our results illustrate the utility of partitioning high-resolution ice shelf mass balance observations into its components to quantify the contributors to ice shelf mass change and the response of grounded ice. |
format |
Article in Journal/Newspaper |
author |
Davison, Benjamin J. Hogg, Anna E. Gourmelen, Noel Jakob, Livia Wuite, Jan Nagler, Thomas Greene, Chad A. Andreasen, Julia Engdahl, Marcus E. |
spellingShingle |
Davison, Benjamin J. Hogg, Anna E. Gourmelen, Noel Jakob, Livia Wuite, Jan Nagler, Thomas Greene, Chad A. Andreasen, Julia Engdahl, Marcus E. Annual mass budget of Antarctic ice shelves from 1997 to 2021 |
author_facet |
Davison, Benjamin J. Hogg, Anna E. Gourmelen, Noel Jakob, Livia Wuite, Jan Nagler, Thomas Greene, Chad A. Andreasen, Julia Engdahl, Marcus E. |
author_sort |
Davison, Benjamin J. |
title |
Annual mass budget of Antarctic ice shelves from 1997 to 2021 |
title_short |
Annual mass budget of Antarctic ice shelves from 1997 to 2021 |
title_full |
Annual mass budget of Antarctic ice shelves from 1997 to 2021 |
title_fullStr |
Annual mass budget of Antarctic ice shelves from 1997 to 2021 |
title_full_unstemmed |
Annual mass budget of Antarctic ice shelves from 1997 to 2021 |
title_sort |
annual mass budget of antarctic ice shelves from 1997 to 2021 |
publisher |
American Association for the Advancement of Science (AAAS) |
publishDate |
2023 |
url |
http://dx.doi.org/10.1126/sciadv.adi0186 https://www.science.org/doi/pdf/10.1126/sciadv.adi0186 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic Ice Sheet Ice Shelf Ice Shelves Iceberg* |
genre_facet |
Antarc* Antarctic Ice Sheet Ice Shelf Ice Shelves Iceberg* |
op_source |
Science Advances volume 9, issue 41 ISSN 2375-2548 |
op_doi |
https://doi.org/10.1126/sciadv.adi0186 |
container_title |
Science Advances |
container_volume |
9 |
container_issue |
41 |
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1801383865074319360 |