Modes of North Atlantic Western boundary current variability at 36° N
The surface-intensified, poleward-flowing Gulf Stream (GS) encounters the equatorward-flowing Deep Western Boundary Current (DWBC) at 36° N off Cape Hatteras. In this study, daily output from a data-assimilative, high-resolution (800 m), regional ocean reanalysis was examined to quantify variability...
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ftpubmed:oai:pubmedcentral.nih.gov:10618170 2023-12-03T10:26:54+01:00 Modes of North Atlantic Western boundary current variability at 36° N Mao, Shun He, Ruoying Andres, Magdalena 2023-10-31 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10618170/ http://www.ncbi.nlm.nih.gov/pubmed/37907598 https://doi.org/10.1038/s41598-023-45889-4 en eng Nature Publishing Group UK http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10618170/ http://www.ncbi.nlm.nih.gov/pubmed/37907598 http://dx.doi.org/10.1038/s41598-023-45889-4 © The Author(s) 2023 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 licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence 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 licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . Sci Rep Article Text 2023 ftpubmed https://doi.org/10.1038/s41598-023-45889-4 2023-11-05T02:10:50Z The surface-intensified, poleward-flowing Gulf Stream (GS) encounters the equatorward-flowing Deep Western Boundary Current (DWBC) at 36° N off Cape Hatteras. In this study, daily output from a data-assimilative, high-resolution (800 m), regional ocean reanalysis was examined to quantify variability in the velocity structure of the GS and DWBC during 2017–2018. The validity of this reanalysis was confirmed with independent observations of ocean velocity and density that demonstrate a high level of realism in the model’s representation of the regional circulation. The model’s daily velocity time series across a transect off Cape Hatteras was examined using rotated Empirical Orthogonal Function analysis, and analysis suggests three leading modes that characterize the variability of the western boundary currents throughout the water column. The first mode, related to meandering of the GS current, accounts for 55.3% of the variance, followed by a “wind-forced mode”, which accounts for 12.5% of the variance. The third mode, influenced by the DWBC and upper-ocean eddies, accounts for 7.1% of the variance. Text North Atlantic PubMed Central (PMC) Scientific Reports 13 1 |
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Article Mao, Shun He, Ruoying Andres, Magdalena Modes of North Atlantic Western boundary current variability at 36° N |
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Article |
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The surface-intensified, poleward-flowing Gulf Stream (GS) encounters the equatorward-flowing Deep Western Boundary Current (DWBC) at 36° N off Cape Hatteras. In this study, daily output from a data-assimilative, high-resolution (800 m), regional ocean reanalysis was examined to quantify variability in the velocity structure of the GS and DWBC during 2017–2018. The validity of this reanalysis was confirmed with independent observations of ocean velocity and density that demonstrate a high level of realism in the model’s representation of the regional circulation. The model’s daily velocity time series across a transect off Cape Hatteras was examined using rotated Empirical Orthogonal Function analysis, and analysis suggests three leading modes that characterize the variability of the western boundary currents throughout the water column. The first mode, related to meandering of the GS current, accounts for 55.3% of the variance, followed by a “wind-forced mode”, which accounts for 12.5% of the variance. The third mode, influenced by the DWBC and upper-ocean eddies, accounts for 7.1% of the variance. |
format |
Text |
author |
Mao, Shun He, Ruoying Andres, Magdalena |
author_facet |
Mao, Shun He, Ruoying Andres, Magdalena |
author_sort |
Mao, Shun |
title |
Modes of North Atlantic Western boundary current variability at 36° N |
title_short |
Modes of North Atlantic Western boundary current variability at 36° N |
title_full |
Modes of North Atlantic Western boundary current variability at 36° N |
title_fullStr |
Modes of North Atlantic Western boundary current variability at 36° N |
title_full_unstemmed |
Modes of North Atlantic Western boundary current variability at 36° N |
title_sort |
modes of north atlantic western boundary current variability at 36° n |
publisher |
Nature Publishing Group UK |
publishDate |
2023 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10618170/ http://www.ncbi.nlm.nih.gov/pubmed/37907598 https://doi.org/10.1038/s41598-023-45889-4 |
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North Atlantic |
genre_facet |
North Atlantic |
op_source |
Sci Rep |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10618170/ http://www.ncbi.nlm.nih.gov/pubmed/37907598 http://dx.doi.org/10.1038/s41598-023-45889-4 |
op_rights |
© The Author(s) 2023 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 licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence 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 licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
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https://doi.org/10.1038/s41598-023-45889-4 |
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Scientific Reports |
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13 |
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