The North Atlantic inflow to the Arctic Ocean: high-resolution model study
North Atlantic Water (NAW) plays a central role in the ocean climate of the Nordic Seas and Arctic Ocean. Whereas the pathways of the NAW in the Nordic Seas are mostly known, those into the Arctic Ocean are yet to be fully understood. To elucidate these routes the results of a high-resolution global...
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ftsouthampton:oai:eprints.soton.ac.uk:69763 2023-07-30T03:59:48+02:00 The North Atlantic inflow to the Arctic Ocean: high-resolution model study Aksenov, Yevgeny Bacon, Sheldon Coward, Andrew C. Nurser, A.J. George 2010-01 https://eprints.soton.ac.uk/69763/ unknown Aksenov, Yevgeny, Bacon, Sheldon, Coward, Andrew C. and Nurser, A.J. George (2010) The North Atlantic inflow to the Arctic Ocean: high-resolution model study. Journal of Marine Systems, 79 (1-2), 1-22. (doi:10.1016/j.jmarsys.2009.05.003 <http://dx.doi.org/10.1016/j.jmarsys.2009.05.003>). Article PeerReviewed 2010 ftsouthampton https://doi.org/10.1016/j.jmarsys.2009.05.003 2023-07-09T21:06:54Z North Atlantic Water (NAW) plays a central role in the ocean climate of the Nordic Seas and Arctic Ocean. Whereas the pathways of the NAW in the Nordic Seas are mostly known, those into the Arctic Ocean are yet to be fully understood. To elucidate these routes the results of a high-resolution global coupled ice–ocean model are used. We demonstrate that in 1989–2004 the NAW inflow was equally divided between the Fram Strait and Barents Sea. We find that salt influx within the branches is comparable but that most of the heat entered the Arctic Ocean through Fram Strait. The model shows complex NAW circulation patterns in the Barents Sea. Two mode waters in the Barents Sea branch are identified: a halocline water produced by surface cooling at shallow convective sites in the northern Barents Sea, and bottom water formed from NAW in the southeastern Barents Sea via full-depth convection and mixing. These two modes continue into the Nansen Basin along two separate routes: one through the northern Barents Sea shelf, and the other through the southeastern Barents Sea with halocline mode water dominating the outflow. Overall, less than half of the NAW coming into the Nordic Seas reaches the Arctic Ocean relatively unmodified, and the rest of it will have been modified in the Barents and Kara Seas with a large fraction re-circulating into the North Atlantic. Article in Journal/Newspaper Arctic Arctic Arctic Ocean Barents Sea Fram Strait Nansen Nansen Basin Nordic Seas North Atlantic University of Southampton: e-Prints Soton Arctic Arctic Ocean Barents Sea Journal of Marine Systems 79 1-2 1 22 |
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Open Polar |
collection |
University of Southampton: e-Prints Soton |
op_collection_id |
ftsouthampton |
language |
unknown |
description |
North Atlantic Water (NAW) plays a central role in the ocean climate of the Nordic Seas and Arctic Ocean. Whereas the pathways of the NAW in the Nordic Seas are mostly known, those into the Arctic Ocean are yet to be fully understood. To elucidate these routes the results of a high-resolution global coupled ice–ocean model are used. We demonstrate that in 1989–2004 the NAW inflow was equally divided between the Fram Strait and Barents Sea. We find that salt influx within the branches is comparable but that most of the heat entered the Arctic Ocean through Fram Strait. The model shows complex NAW circulation patterns in the Barents Sea. Two mode waters in the Barents Sea branch are identified: a halocline water produced by surface cooling at shallow convective sites in the northern Barents Sea, and bottom water formed from NAW in the southeastern Barents Sea via full-depth convection and mixing. These two modes continue into the Nansen Basin along two separate routes: one through the northern Barents Sea shelf, and the other through the southeastern Barents Sea with halocline mode water dominating the outflow. Overall, less than half of the NAW coming into the Nordic Seas reaches the Arctic Ocean relatively unmodified, and the rest of it will have been modified in the Barents and Kara Seas with a large fraction re-circulating into the North Atlantic. |
format |
Article in Journal/Newspaper |
author |
Aksenov, Yevgeny Bacon, Sheldon Coward, Andrew C. Nurser, A.J. George |
spellingShingle |
Aksenov, Yevgeny Bacon, Sheldon Coward, Andrew C. Nurser, A.J. George The North Atlantic inflow to the Arctic Ocean: high-resolution model study |
author_facet |
Aksenov, Yevgeny Bacon, Sheldon Coward, Andrew C. Nurser, A.J. George |
author_sort |
Aksenov, Yevgeny |
title |
The North Atlantic inflow to the Arctic Ocean: high-resolution model study |
title_short |
The North Atlantic inflow to the Arctic Ocean: high-resolution model study |
title_full |
The North Atlantic inflow to the Arctic Ocean: high-resolution model study |
title_fullStr |
The North Atlantic inflow to the Arctic Ocean: high-resolution model study |
title_full_unstemmed |
The North Atlantic inflow to the Arctic Ocean: high-resolution model study |
title_sort |
north atlantic inflow to the arctic ocean: high-resolution model study |
publishDate |
2010 |
url |
https://eprints.soton.ac.uk/69763/ |
geographic |
Arctic Arctic Ocean Barents Sea |
geographic_facet |
Arctic Arctic Ocean Barents Sea |
genre |
Arctic Arctic Arctic Ocean Barents Sea Fram Strait Nansen Nansen Basin Nordic Seas North Atlantic |
genre_facet |
Arctic Arctic Arctic Ocean Barents Sea Fram Strait Nansen Nansen Basin Nordic Seas North Atlantic |
op_relation |
Aksenov, Yevgeny, Bacon, Sheldon, Coward, Andrew C. and Nurser, A.J. George (2010) The North Atlantic inflow to the Arctic Ocean: high-resolution model study. Journal of Marine Systems, 79 (1-2), 1-22. (doi:10.1016/j.jmarsys.2009.05.003 <http://dx.doi.org/10.1016/j.jmarsys.2009.05.003>). |
op_doi |
https://doi.org/10.1016/j.jmarsys.2009.05.003 |
container_title |
Journal of Marine Systems |
container_volume |
79 |
container_issue |
1-2 |
container_start_page |
1 |
op_container_end_page |
22 |
_version_ |
1772810573640105984 |