Ocean convection linked to the recent ice edge retreat along east Greenland
Warm subtropical-origin Atlantic water flows northward across the Greenland-Scotland Ridge into the Nordic Seas, where it relinquishes heat to the atmosphere and gradually transforms into dense Atlantic-origin water. Returning southward along east Greenland, this water mass is situated beneath a lay...
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ftpubmed:oai:pubmedcentral.nih.gov:5876363 2023-05-15T16:03:36+02:00 Ocean convection linked to the recent ice edge retreat along east Greenland Våge, Kjetil Papritz, Lukas Håvik, Lisbeth Spall, Michael A. Moore, G. W. K. 2018-03-29 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5876363/ http://www.ncbi.nlm.nih.gov/pubmed/29599505 https://doi.org/10.1038/s41467-018-03468-6 en eng Nature Publishing Group UK http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5876363/ http://www.ncbi.nlm.nih.gov/pubmed/29599505 http://dx.doi.org/10.1038/s41467-018-03468-6 © The Author(s) 2018 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/. CC-BY Article Text 2018 ftpubmed https://doi.org/10.1038/s41467-018-03468-6 2018-04-08T00:42:53Z Warm subtropical-origin Atlantic water flows northward across the Greenland-Scotland Ridge into the Nordic Seas, where it relinquishes heat to the atmosphere and gradually transforms into dense Atlantic-origin water. Returning southward along east Greenland, this water mass is situated beneath a layer of cold, fresh surface water and sea ice. Here we show, using measurements from autonomous ocean gliders, that the Atlantic-origin water was re-ventilated while transiting the western Iceland Sea during winter. This re-ventilation is a recent phenomenon made possible by the retreat of the ice edge toward Greenland. The fresh surface layer that characterises this region in summer is diverted onto the Greenland shelf by enhanced onshore Ekman transport induced by stronger northerly winds in fall and winter. Severe heat loss from the ocean offshore of the ice edge subsequently triggers convection, which further transforms the Atlantic-origin water. This re-ventilation is a counterintuitive occurrence in a warming climate, and highlights the difficulties inherent in predicting the behaviour of the complex coupled climate system. Text East Greenland Greenland Greenland-Scotland Ridge Iceland Nordic Seas Sea ice PubMed Central (PMC) Greenland Nature Communications 9 1 |
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Article Våge, Kjetil Papritz, Lukas Håvik, Lisbeth Spall, Michael A. Moore, G. W. K. Ocean convection linked to the recent ice edge retreat along east Greenland |
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description |
Warm subtropical-origin Atlantic water flows northward across the Greenland-Scotland Ridge into the Nordic Seas, where it relinquishes heat to the atmosphere and gradually transforms into dense Atlantic-origin water. Returning southward along east Greenland, this water mass is situated beneath a layer of cold, fresh surface water and sea ice. Here we show, using measurements from autonomous ocean gliders, that the Atlantic-origin water was re-ventilated while transiting the western Iceland Sea during winter. This re-ventilation is a recent phenomenon made possible by the retreat of the ice edge toward Greenland. The fresh surface layer that characterises this region in summer is diverted onto the Greenland shelf by enhanced onshore Ekman transport induced by stronger northerly winds in fall and winter. Severe heat loss from the ocean offshore of the ice edge subsequently triggers convection, which further transforms the Atlantic-origin water. This re-ventilation is a counterintuitive occurrence in a warming climate, and highlights the difficulties inherent in predicting the behaviour of the complex coupled climate system. |
format |
Text |
author |
Våge, Kjetil Papritz, Lukas Håvik, Lisbeth Spall, Michael A. Moore, G. W. K. |
author_facet |
Våge, Kjetil Papritz, Lukas Håvik, Lisbeth Spall, Michael A. Moore, G. W. K. |
author_sort |
Våge, Kjetil |
title |
Ocean convection linked to the recent ice edge retreat along east Greenland |
title_short |
Ocean convection linked to the recent ice edge retreat along east Greenland |
title_full |
Ocean convection linked to the recent ice edge retreat along east Greenland |
title_fullStr |
Ocean convection linked to the recent ice edge retreat along east Greenland |
title_full_unstemmed |
Ocean convection linked to the recent ice edge retreat along east Greenland |
title_sort |
ocean convection linked to the recent ice edge retreat along east greenland |
publisher |
Nature Publishing Group UK |
publishDate |
2018 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5876363/ http://www.ncbi.nlm.nih.gov/pubmed/29599505 https://doi.org/10.1038/s41467-018-03468-6 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
East Greenland Greenland Greenland-Scotland Ridge Iceland Nordic Seas Sea ice |
genre_facet |
East Greenland Greenland Greenland-Scotland Ridge Iceland Nordic Seas Sea ice |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5876363/ http://www.ncbi.nlm.nih.gov/pubmed/29599505 http://dx.doi.org/10.1038/s41467-018-03468-6 |
op_rights |
© The Author(s) 2018 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/. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1038/s41467-018-03468-6 |
container_title |
Nature Communications |
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9 |
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1 |
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1766399291617705984 |