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A continuous pathway for fresh water along the East Greenland shelf
Export from the Arctic and meltwater from the Greenland Ice Sheet together form a southward-flowing coastal current along the East Greenland shelf. This current transports enough fresh water to substantially alter the large-scale circulation of the North Atlantic, yet the coastal current’s origin an...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Association for the Advancement of Science
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7577721/ https://www.ncbi.nlm.nih.gov/pubmed/33087349 http://dx.doi.org/10.1126/sciadv.abc4254 |
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author | Foukal, Nicholas P. Gelderloos, Renske Pickart, Robert S. |
author_facet | Foukal, Nicholas P. Gelderloos, Renske Pickart, Robert S. |
author_sort | Foukal, Nicholas P. |
collection | PubMed |
description | Export from the Arctic and meltwater from the Greenland Ice Sheet together form a southward-flowing coastal current along the East Greenland shelf. This current transports enough fresh water to substantially alter the large-scale circulation of the North Atlantic, yet the coastal current’s origin and fate are poorly known due to our lack of knowledge concerning its north-south connectivity. Here, we demonstrate how the current negotiates the complex topography of Denmark Strait using in situ data and output from an ocean circulation model. We determine that the coastal current north of the strait supplies half of the transport to the coastal current south of the strait, while the other half is sourced from offshore via the shelfbreak jet, with little input from the Greenland Ice Sheet. These results indicate that there is a continuous pathway for Arctic-sourced fresh water along the entire East Greenland shelf from Fram Strait to Cape Farewell. |
format | Online Article Text |
id | pubmed-7577721 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | American Association for the Advancement of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-75777212020-11-02 A continuous pathway for fresh water along the East Greenland shelf Foukal, Nicholas P. Gelderloos, Renske Pickart, Robert S. Sci Adv Research Articles Export from the Arctic and meltwater from the Greenland Ice Sheet together form a southward-flowing coastal current along the East Greenland shelf. This current transports enough fresh water to substantially alter the large-scale circulation of the North Atlantic, yet the coastal current’s origin and fate are poorly known due to our lack of knowledge concerning its north-south connectivity. Here, we demonstrate how the current negotiates the complex topography of Denmark Strait using in situ data and output from an ocean circulation model. We determine that the coastal current north of the strait supplies half of the transport to the coastal current south of the strait, while the other half is sourced from offshore via the shelfbreak jet, with little input from the Greenland Ice Sheet. These results indicate that there is a continuous pathway for Arctic-sourced fresh water along the entire East Greenland shelf from Fram Strait to Cape Farewell. American Association for the Advancement of Science 2020-10-21 /pmc/articles/PMC7577721/ /pubmed/33087349 http://dx.doi.org/10.1126/sciadv.abc4254 Text en Copyright © 2020 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC). https://creativecommons.org/licenses/by-nc/4.0/ https://creativecommons.org/licenses/by-nc/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license (https://creativecommons.org/licenses/by-nc/4.0/) , which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited. |
spellingShingle | Research Articles Foukal, Nicholas P. Gelderloos, Renske Pickart, Robert S. A continuous pathway for fresh water along the East Greenland shelf |
title | A continuous pathway for fresh water along the East Greenland shelf |
title_full | A continuous pathway for fresh water along the East Greenland shelf |
title_fullStr | A continuous pathway for fresh water along the East Greenland shelf |
title_full_unstemmed | A continuous pathway for fresh water along the East Greenland shelf |
title_short | A continuous pathway for fresh water along the East Greenland shelf |
title_sort | continuous pathway for fresh water along the east greenland shelf |
topic | Research Articles |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7577721/ https://www.ncbi.nlm.nih.gov/pubmed/33087349 http://dx.doi.org/10.1126/sciadv.abc4254 |
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