Heavy footprints of upper-ocean eddies on weakened Arctic sea ice in marginal ice zones
Arctic sea ice extent continues to decline at an unprecedented rate that is commonly underestimated by climate projection models. This disagreement may imply biases in the representation of processes that bring heat to the sea ice in these models. Here we reveal interactions between ocean-ice heat f...
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ftpubmed:oai:pubmedcentral.nih.gov:9021234 2023-05-15T14:51:38+02:00 Heavy footprints of upper-ocean eddies on weakened Arctic sea ice in marginal ice zones Manucharyan, Georgy E. Thompson, Andrew F. 2022-04-20 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9021234/ http://www.ncbi.nlm.nih.gov/pubmed/35444177 https://doi.org/10.1038/s41467-022-29663-0 en eng Nature Publishing Group UK http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9021234/ http://www.ncbi.nlm.nih.gov/pubmed/35444177 http://dx.doi.org/10.1038/s41467-022-29663-0 © 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/s41467-022-29663-0 2022-05-01T00:33:51Z Arctic sea ice extent continues to decline at an unprecedented rate that is commonly underestimated by climate projection models. This disagreement may imply biases in the representation of processes that bring heat to the sea ice in these models. Here we reveal interactions between ocean-ice heat fluxes, sea ice cover, and upper-ocean eddies that constitute a positive feedback missing in climate models. Using an eddy-resolving global ocean model, we demonstrate that ocean-ice heat fluxes are predominantly induced by localized and intermittent ocean eddies, filaments, and internal waves that episodically advect warm subsurface waters into the mixed layer where they are in direct contact with sea ice. The energetics of near-surface eddies interacting with sea ice are modulated by frictional dissipation in ice-ocean boundary layers, being dominant under consolidated winter ice but substantially reduced under low-concentrated weak sea ice in marginal ice zones. Our results indicate that Arctic sea ice loss will reduce upper-ocean dissipation, which will produce more energetic eddies and amplified ocean-ice heat exchange. We thus emphasize the need for sea ice-aware parameterizations of eddy-induced ice-ocean heat fluxes in climate models. Text Arctic Sea ice PubMed Central (PMC) Arctic Nature Communications 13 1 |
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Article Manucharyan, Georgy E. Thompson, Andrew F. Heavy footprints of upper-ocean eddies on weakened Arctic sea ice in marginal ice zones |
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Article |
description |
Arctic sea ice extent continues to decline at an unprecedented rate that is commonly underestimated by climate projection models. This disagreement may imply biases in the representation of processes that bring heat to the sea ice in these models. Here we reveal interactions between ocean-ice heat fluxes, sea ice cover, and upper-ocean eddies that constitute a positive feedback missing in climate models. Using an eddy-resolving global ocean model, we demonstrate that ocean-ice heat fluxes are predominantly induced by localized and intermittent ocean eddies, filaments, and internal waves that episodically advect warm subsurface waters into the mixed layer where they are in direct contact with sea ice. The energetics of near-surface eddies interacting with sea ice are modulated by frictional dissipation in ice-ocean boundary layers, being dominant under consolidated winter ice but substantially reduced under low-concentrated weak sea ice in marginal ice zones. Our results indicate that Arctic sea ice loss will reduce upper-ocean dissipation, which will produce more energetic eddies and amplified ocean-ice heat exchange. We thus emphasize the need for sea ice-aware parameterizations of eddy-induced ice-ocean heat fluxes in climate models. |
format |
Text |
author |
Manucharyan, Georgy E. Thompson, Andrew F. |
author_facet |
Manucharyan, Georgy E. Thompson, Andrew F. |
author_sort |
Manucharyan, Georgy E. |
title |
Heavy footprints of upper-ocean eddies on weakened Arctic sea ice in marginal ice zones |
title_short |
Heavy footprints of upper-ocean eddies on weakened Arctic sea ice in marginal ice zones |
title_full |
Heavy footprints of upper-ocean eddies on weakened Arctic sea ice in marginal ice zones |
title_fullStr |
Heavy footprints of upper-ocean eddies on weakened Arctic sea ice in marginal ice zones |
title_full_unstemmed |
Heavy footprints of upper-ocean eddies on weakened Arctic sea ice in marginal ice zones |
title_sort |
heavy footprints of upper-ocean eddies on weakened arctic sea ice in marginal ice zones |
publisher |
Nature Publishing Group UK |
publishDate |
2022 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9021234/ http://www.ncbi.nlm.nih.gov/pubmed/35444177 https://doi.org/10.1038/s41467-022-29663-0 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Sea ice |
genre_facet |
Arctic Sea ice |
op_source |
Nat Commun |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9021234/ http://www.ncbi.nlm.nih.gov/pubmed/35444177 http://dx.doi.org/10.1038/s41467-022-29663-0 |
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/) . |
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CC-BY |
op_doi |
https://doi.org/10.1038/s41467-022-29663-0 |
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Nature Communications |
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13 |
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1 |
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