Discovery of an unrecognized pathway carrying overflow waters toward the Faroe Bank Channel
The dense overflow waters of the Nordic Seas are an integral link and important diagnostic for the stability of the Atlantic Meridional Overturning Circulation (AMOC). The pathways feeding the overflow remain, however, poorly resolved. Here we use multiple observational platforms and an eddy-resolvi...
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ftpubmed:oai:pubmedcentral.nih.gov:7382466 2023-05-15T17:24:19+02:00 Discovery of an unrecognized pathway carrying overflow waters toward the Faroe Bank Channel Chafik, Léon Hátún, Hjálmar Kjellsson, Joakim Larsen, Karin Margretha H. Rossby, Thomas Berx, Barbara 2020-07-24 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7382466/ http://www.ncbi.nlm.nih.gov/pubmed/32709916 https://doi.org/10.1038/s41467-020-17426-8 en eng Nature Publishing Group UK http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7382466/ http://www.ncbi.nlm.nih.gov/pubmed/32709916 http://dx.doi.org/10.1038/s41467-020-17426-8 © The Author(s) 2020 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 Nat Commun Article Text 2020 ftpubmed https://doi.org/10.1038/s41467-020-17426-8 2020-08-02T00:30:29Z The dense overflow waters of the Nordic Seas are an integral link and important diagnostic for the stability of the Atlantic Meridional Overturning Circulation (AMOC). The pathways feeding the overflow remain, however, poorly resolved. Here we use multiple observational platforms and an eddy-resolving ocean model to identify an unrecognized deep flow toward the Faroe Bank Channel. We demonstrate that anticyclonic wind forcing in the Nordic Seas via its regulation of the basin circulation plays a key role in activating an unrecognized overflow path from the Norwegian slope – at which times the overflow is anomalously strong. We further establish that, regardless of upstream pathways, the overflows are mostly carried by a deep jet banked against the eastern slope of the Faroe-Shetland Channel, contrary to previous thinking. This deep flow is thus the primary conduit of overflow water feeding the lower branch of the AMOC via the Faroe Bank Channel. Text Nordic Seas PubMed Central (PMC) Faroe Bank ENVELOPE(-8.667,-8.667,60.917,60.917) Nature Communications 11 1 |
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Article Chafik, Léon Hátún, Hjálmar Kjellsson, Joakim Larsen, Karin Margretha H. Rossby, Thomas Berx, Barbara Discovery of an unrecognized pathway carrying overflow waters toward the Faroe Bank Channel |
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Article |
description |
The dense overflow waters of the Nordic Seas are an integral link and important diagnostic for the stability of the Atlantic Meridional Overturning Circulation (AMOC). The pathways feeding the overflow remain, however, poorly resolved. Here we use multiple observational platforms and an eddy-resolving ocean model to identify an unrecognized deep flow toward the Faroe Bank Channel. We demonstrate that anticyclonic wind forcing in the Nordic Seas via its regulation of the basin circulation plays a key role in activating an unrecognized overflow path from the Norwegian slope – at which times the overflow is anomalously strong. We further establish that, regardless of upstream pathways, the overflows are mostly carried by a deep jet banked against the eastern slope of the Faroe-Shetland Channel, contrary to previous thinking. This deep flow is thus the primary conduit of overflow water feeding the lower branch of the AMOC via the Faroe Bank Channel. |
format |
Text |
author |
Chafik, Léon Hátún, Hjálmar Kjellsson, Joakim Larsen, Karin Margretha H. Rossby, Thomas Berx, Barbara |
author_facet |
Chafik, Léon Hátún, Hjálmar Kjellsson, Joakim Larsen, Karin Margretha H. Rossby, Thomas Berx, Barbara |
author_sort |
Chafik, Léon |
title |
Discovery of an unrecognized pathway carrying overflow waters toward the Faroe Bank Channel |
title_short |
Discovery of an unrecognized pathway carrying overflow waters toward the Faroe Bank Channel |
title_full |
Discovery of an unrecognized pathway carrying overflow waters toward the Faroe Bank Channel |
title_fullStr |
Discovery of an unrecognized pathway carrying overflow waters toward the Faroe Bank Channel |
title_full_unstemmed |
Discovery of an unrecognized pathway carrying overflow waters toward the Faroe Bank Channel |
title_sort |
discovery of an unrecognized pathway carrying overflow waters toward the faroe bank channel |
publisher |
Nature Publishing Group UK |
publishDate |
2020 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7382466/ http://www.ncbi.nlm.nih.gov/pubmed/32709916 https://doi.org/10.1038/s41467-020-17426-8 |
long_lat |
ENVELOPE(-8.667,-8.667,60.917,60.917) |
geographic |
Faroe Bank |
geographic_facet |
Faroe Bank |
genre |
Nordic Seas |
genre_facet |
Nordic Seas |
op_source |
Nat Commun |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7382466/ http://www.ncbi.nlm.nih.gov/pubmed/32709916 http://dx.doi.org/10.1038/s41467-020-17426-8 |
op_rights |
© The Author(s) 2020 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/s41467-020-17426-8 |
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Nature Communications |
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11 |
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1 |
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1766115279896576000 |