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Redrawing the Iceland−Scotland Overflow Water pathways in the North Atlantic
Iceland-Scotland Overflow Water (ISOW) is a primary deep water mass exported from the Norwegian Sea into the North Atlantic as part of the global Meridional Overturning Circulation. ISOW has historically been depicted as flowing counter-clockwise in a deep boundary current around the subpolar North...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7170894/ https://www.ncbi.nlm.nih.gov/pubmed/32313002 http://dx.doi.org/10.1038/s41467-020-15513-4 |
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author | Zou, Sijia Bower, Amy Furey, Heather Susan Lozier, M. Xu, Xiaobiao |
author_facet | Zou, Sijia Bower, Amy Furey, Heather Susan Lozier, M. Xu, Xiaobiao |
author_sort | Zou, Sijia |
collection | PubMed |
description | Iceland-Scotland Overflow Water (ISOW) is a primary deep water mass exported from the Norwegian Sea into the North Atlantic as part of the global Meridional Overturning Circulation. ISOW has historically been depicted as flowing counter-clockwise in a deep boundary current around the subpolar North Atlantic, but this single-boundary-following pathway is being challenged by new Lagrangian observations and model simulations. We show here that ISOW leaves the boundary and spreads into the interior towards the central Labrador and Irminger basins after flowing through the Charlie-Gibbs Fracture Zone. We also describe a newly observed southward pathway of ISOW along the western flank of the Mid-Atlantic Ridge. The partitioning of these pathways is shown to be influenced by deep-reaching eddies and meanders of the North Atlantic Current. Our results, in tandem with previous studies, call for a revision in the historical depiction of ISOW pathways throughout the North Atlantic. |
format | Online Article Text |
id | pubmed-7170894 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-71708942020-04-23 Redrawing the Iceland−Scotland Overflow Water pathways in the North Atlantic Zou, Sijia Bower, Amy Furey, Heather Susan Lozier, M. Xu, Xiaobiao Nat Commun Article Iceland-Scotland Overflow Water (ISOW) is a primary deep water mass exported from the Norwegian Sea into the North Atlantic as part of the global Meridional Overturning Circulation. ISOW has historically been depicted as flowing counter-clockwise in a deep boundary current around the subpolar North Atlantic, but this single-boundary-following pathway is being challenged by new Lagrangian observations and model simulations. We show here that ISOW leaves the boundary and spreads into the interior towards the central Labrador and Irminger basins after flowing through the Charlie-Gibbs Fracture Zone. We also describe a newly observed southward pathway of ISOW along the western flank of the Mid-Atlantic Ridge. The partitioning of these pathways is shown to be influenced by deep-reaching eddies and meanders of the North Atlantic Current. Our results, in tandem with previous studies, call for a revision in the historical depiction of ISOW pathways throughout the North Atlantic. Nature Publishing Group UK 2020-04-20 /pmc/articles/PMC7170894/ /pubmed/32313002 http://dx.doi.org/10.1038/s41467-020-15513-4 Text en © 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/. |
spellingShingle | Article Zou, Sijia Bower, Amy Furey, Heather Susan Lozier, M. Xu, Xiaobiao Redrawing the Iceland−Scotland Overflow Water pathways in the North Atlantic |
title | Redrawing the Iceland−Scotland Overflow Water pathways in the North Atlantic |
title_full | Redrawing the Iceland−Scotland Overflow Water pathways in the North Atlantic |
title_fullStr | Redrawing the Iceland−Scotland Overflow Water pathways in the North Atlantic |
title_full_unstemmed | Redrawing the Iceland−Scotland Overflow Water pathways in the North Atlantic |
title_short | Redrawing the Iceland−Scotland Overflow Water pathways in the North Atlantic |
title_sort | redrawing the iceland−scotland overflow water pathways in the north atlantic |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7170894/ https://www.ncbi.nlm.nih.gov/pubmed/32313002 http://dx.doi.org/10.1038/s41467-020-15513-4 |
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