Spiraling pathways of global deep waters to the surface of the Southern Ocean
Upwelling of global deep waters to the sea surface in the Southern Ocean closes the global overturning circulation and is fundamentally important for oceanic uptake of carbon and heat, nutrient resupply for sustaining oceanic biological production, and the melt rate of ice shelves. However, the exac...
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ftpubmed:oai:pubmedcentral.nih.gov:5541074 2023-05-15T13:44:08+02:00 Spiraling pathways of global deep waters to the surface of the Southern Ocean Tamsitt, Veronica Drake, Henri F. Morrison, Adele K. Talley, Lynne D. Dufour, Carolina O. Gray, Alison R. Griffies, Stephen M. Mazloff, Matthew R. Sarmiento, Jorge L. Wang, Jinbo Weijer, Wilbert 2017-08-02 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5541074/ http://www.ncbi.nlm.nih.gov/pubmed/28769035 https://doi.org/10.1038/s41467-017-00197-0 en eng Nature Publishing Group UK http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5541074/ http://www.ncbi.nlm.nih.gov/pubmed/28769035 http://dx.doi.org/10.1038/s41467-017-00197-0 © The Author(s) 2017 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 2017 ftpubmed https://doi.org/10.1038/s41467-017-00197-0 2017-08-13T00:15:11Z Upwelling of global deep waters to the sea surface in the Southern Ocean closes the global overturning circulation and is fundamentally important for oceanic uptake of carbon and heat, nutrient resupply for sustaining oceanic biological production, and the melt rate of ice shelves. However, the exact pathways and role of topography in Southern Ocean upwelling remain largely unknown. Here we show detailed upwelling pathways in three dimensions, using hydrographic observations and particle tracking in high-resolution models. The analysis reveals that the northern-sourced deep waters enter the Antarctic Circumpolar Current via southward flow along the boundaries of the three ocean basins, before spiraling southeastward and upward through the Antarctic Circumpolar Current. Upwelling is greatly enhanced at five major topographic features, associated with vigorous mesoscale eddy activity. Deep water reaches the upper ocean predominantly south of the Antarctic Circumpolar Current, with a spatially nonuniform distribution. The timescale for half of the deep water to upwell from 30° S to the mixed layer is ~60–90 years. Text Antarc* Antarctic Ice Shelves Southern Ocean PubMed Central (PMC) Antarctic Southern Ocean The Antarctic Nature Communications 8 1 |
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Article Tamsitt, Veronica Drake, Henri F. Morrison, Adele K. Talley, Lynne D. Dufour, Carolina O. Gray, Alison R. Griffies, Stephen M. Mazloff, Matthew R. Sarmiento, Jorge L. Wang, Jinbo Weijer, Wilbert Spiraling pathways of global deep waters to the surface of the Southern Ocean |
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Upwelling of global deep waters to the sea surface in the Southern Ocean closes the global overturning circulation and is fundamentally important for oceanic uptake of carbon and heat, nutrient resupply for sustaining oceanic biological production, and the melt rate of ice shelves. However, the exact pathways and role of topography in Southern Ocean upwelling remain largely unknown. Here we show detailed upwelling pathways in three dimensions, using hydrographic observations and particle tracking in high-resolution models. The analysis reveals that the northern-sourced deep waters enter the Antarctic Circumpolar Current via southward flow along the boundaries of the three ocean basins, before spiraling southeastward and upward through the Antarctic Circumpolar Current. Upwelling is greatly enhanced at five major topographic features, associated with vigorous mesoscale eddy activity. Deep water reaches the upper ocean predominantly south of the Antarctic Circumpolar Current, with a spatially nonuniform distribution. The timescale for half of the deep water to upwell from 30° S to the mixed layer is ~60–90 years. |
format |
Text |
author |
Tamsitt, Veronica Drake, Henri F. Morrison, Adele K. Talley, Lynne D. Dufour, Carolina O. Gray, Alison R. Griffies, Stephen M. Mazloff, Matthew R. Sarmiento, Jorge L. Wang, Jinbo Weijer, Wilbert |
author_facet |
Tamsitt, Veronica Drake, Henri F. Morrison, Adele K. Talley, Lynne D. Dufour, Carolina O. Gray, Alison R. Griffies, Stephen M. Mazloff, Matthew R. Sarmiento, Jorge L. Wang, Jinbo Weijer, Wilbert |
author_sort |
Tamsitt, Veronica |
title |
Spiraling pathways of global deep waters to the surface of the Southern Ocean |
title_short |
Spiraling pathways of global deep waters to the surface of the Southern Ocean |
title_full |
Spiraling pathways of global deep waters to the surface of the Southern Ocean |
title_fullStr |
Spiraling pathways of global deep waters to the surface of the Southern Ocean |
title_full_unstemmed |
Spiraling pathways of global deep waters to the surface of the Southern Ocean |
title_sort |
spiraling pathways of global deep waters to the surface of the southern ocean |
publisher |
Nature Publishing Group UK |
publishDate |
2017 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5541074/ http://www.ncbi.nlm.nih.gov/pubmed/28769035 https://doi.org/10.1038/s41467-017-00197-0 |
geographic |
Antarctic Southern Ocean The Antarctic |
geographic_facet |
Antarctic Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Ice Shelves Southern Ocean |
genre_facet |
Antarc* Antarctic Ice Shelves Southern Ocean |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5541074/ http://www.ncbi.nlm.nih.gov/pubmed/28769035 http://dx.doi.org/10.1038/s41467-017-00197-0 |
op_rights |
© The Author(s) 2017 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/s41467-017-00197-0 |
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Nature Communications |
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8 |
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1 |
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