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Ocean eddies strongly affect global mean sea-level projections
Current sea-level projections are based on climate models in which the effects of ocean eddies are parameterized. Here, we investigate the effect of ocean eddies on global mean sea-level rise (GMSLR) projections, using climate model simulations. Explicitly resolving ocean eddies leads to a more real...
Autores principales: | , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Association for the Advancement of Science
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8034847/ https://www.ncbi.nlm.nih.gov/pubmed/33837083 http://dx.doi.org/10.1126/sciadv.abf1674 |
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author | van Westen, René M. Dijkstra, Henk A. |
author_facet | van Westen, René M. Dijkstra, Henk A. |
author_sort | van Westen, René M. |
collection | PubMed |
description | Current sea-level projections are based on climate models in which the effects of ocean eddies are parameterized. Here, we investigate the effect of ocean eddies on global mean sea-level rise (GMSLR) projections, using climate model simulations. Explicitly resolving ocean eddies leads to a more realistic Southern Ocean temperature distribution and volume transport. These quantities control the rate of basal melt, which eventually results in Antarctic mass loss. In a model with resolved ocean eddies, the Southern Ocean temperature changes lead to a smaller Antarctic GMSLR contribution compared to the same model in which eddies are parameterized. As a result, the projected GMSLR is about 25% lower at the end of this century in the eddying model. Relatively small-scale ocean eddies can hence have profound large-scale effects and consequently affect GMSLR projections. |
format | Online Article Text |
id | pubmed-8034847 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | American Association for the Advancement of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-80348472021-04-21 Ocean eddies strongly affect global mean sea-level projections van Westen, René M. Dijkstra, Henk A. Sci Adv Research Articles Current sea-level projections are based on climate models in which the effects of ocean eddies are parameterized. Here, we investigate the effect of ocean eddies on global mean sea-level rise (GMSLR) projections, using climate model simulations. Explicitly resolving ocean eddies leads to a more realistic Southern Ocean temperature distribution and volume transport. These quantities control the rate of basal melt, which eventually results in Antarctic mass loss. In a model with resolved ocean eddies, the Southern Ocean temperature changes lead to a smaller Antarctic GMSLR contribution compared to the same model in which eddies are parameterized. As a result, the projected GMSLR is about 25% lower at the end of this century in the eddying model. Relatively small-scale ocean eddies can hence have profound large-scale effects and consequently affect GMSLR projections. American Association for the Advancement of Science 2021-04-09 /pmc/articles/PMC8034847/ /pubmed/33837083 http://dx.doi.org/10.1126/sciadv.abf1674 Text en Copyright © 2021 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC). https://creativecommons.org/licenses/by-nc/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license (https://creativecommons.org/licenses/by-nc/4.0/) , which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited. |
spellingShingle | Research Articles van Westen, René M. Dijkstra, Henk A. Ocean eddies strongly affect global mean sea-level projections |
title | Ocean eddies strongly affect global mean sea-level projections |
title_full | Ocean eddies strongly affect global mean sea-level projections |
title_fullStr | Ocean eddies strongly affect global mean sea-level projections |
title_full_unstemmed | Ocean eddies strongly affect global mean sea-level projections |
title_short | Ocean eddies strongly affect global mean sea-level projections |
title_sort | ocean eddies strongly affect global mean sea-level projections |
topic | Research Articles |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8034847/ https://www.ncbi.nlm.nih.gov/pubmed/33837083 http://dx.doi.org/10.1126/sciadv.abf1674 |
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