The role of bottom pressure torques on the interior pathways of North Atlantic Deep Water
Four versions of the same global climate model, one with horizontal resolution of 1.88 3 3.68 and three with 0.28 3 0.48, are employed to evaluate the role of ocean bottom topography and viscosity on the spatial structure of the deep circulation. This study is motivated by several recent observation...
Published in: | Journal of Physical Oceanography |
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American Meteorological Society
2012
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Online Access: | http://hdl.handle.net/1959.4/unsworks_41979 https://doi.org/10.1175/2011JPO4584.1 |
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ftunswworks:oai:unsworks.library.unsw.edu.au:1959.4/unsworks_41979 2024-05-12T08:06:38+00:00 The role of bottom pressure torques on the interior pathways of North Atlantic Deep Water Spence, P Saenko, OA Sijp, WP England, MH Spence, Paul 2012 http://hdl.handle.net/1959.4/unsworks_41979 https://doi.org/10.1175/2011JPO4584.1 unknown American Meteorological Society http://purl.org/au-research/grants/arc/FL100100214 http://hdl.handle.net/1959.4/unsworks_41979 https://doi.org/10.1175/2011JPO4584.1 metadata only access http://purl.org/coar/access_right/c_14cb CC-BY-NC-ND https://creativecommons.org/licenses/by-nc-nd/4.0/ urn:ISSN:0022-3670 urn:ISSN:1520-0485 Journal of Physical Oceanography, 42, 1, 110-125 anzsrc-for: 040503 Physical Oceanography anzsrc-for: 0405 Oceanography anzsrc-for: 0911 Maritime Engineering journal article http://purl.org/coar/resource_type/c_6501 2012 ftunswworks https://doi.org/10.1175/2011JPO4584.1 2024-04-17T15:26:38Z Four versions of the same global climate model, one with horizontal resolution of 1.88 3 3.68 and three with 0.28 3 0.48, are employed to evaluate the role of ocean bottom topography and viscosity on the spatial structure of the deep circulation. This study is motivated by several recent observational studies that find that subsurface floats injected near the western boundary of the Labrador Sea most often do not continuously follow the deep western boundary current (DWBC), in contrast to the traditional view that the deep water formed in the North Atlantic predominantly follows the DWBC. It is found that, with imposed large viscosity values, the model reproduces the traditional view. However, as viscosity is reduced and the model bathymetry resolution increased, much of the North Atlantic Deep Water (NADW) separates from the western boundary and enters the low-latitude Atlantic via interior pathways distinct from the DWBC. It is shown that bottom pressure torques play an important role in maintaining these interior NADW outflows. Article in Journal/Newspaper Labrador Sea NADW North Atlantic Deep Water North Atlantic UNSW Sydney (The University of New South Wales): UNSWorks Journal of Physical Oceanography 42 1 110 125 |
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Open Polar |
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UNSW Sydney (The University of New South Wales): UNSWorks |
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topic |
anzsrc-for: 040503 Physical Oceanography anzsrc-for: 0405 Oceanography anzsrc-for: 0911 Maritime Engineering |
spellingShingle |
anzsrc-for: 040503 Physical Oceanography anzsrc-for: 0405 Oceanography anzsrc-for: 0911 Maritime Engineering Spence, P Saenko, OA Sijp, WP England, MH Spence, Paul The role of bottom pressure torques on the interior pathways of North Atlantic Deep Water |
topic_facet |
anzsrc-for: 040503 Physical Oceanography anzsrc-for: 0405 Oceanography anzsrc-for: 0911 Maritime Engineering |
description |
Four versions of the same global climate model, one with horizontal resolution of 1.88 3 3.68 and three with 0.28 3 0.48, are employed to evaluate the role of ocean bottom topography and viscosity on the spatial structure of the deep circulation. This study is motivated by several recent observational studies that find that subsurface floats injected near the western boundary of the Labrador Sea most often do not continuously follow the deep western boundary current (DWBC), in contrast to the traditional view that the deep water formed in the North Atlantic predominantly follows the DWBC. It is found that, with imposed large viscosity values, the model reproduces the traditional view. However, as viscosity is reduced and the model bathymetry resolution increased, much of the North Atlantic Deep Water (NADW) separates from the western boundary and enters the low-latitude Atlantic via interior pathways distinct from the DWBC. It is shown that bottom pressure torques play an important role in maintaining these interior NADW outflows. |
format |
Article in Journal/Newspaper |
author |
Spence, P Saenko, OA Sijp, WP England, MH Spence, Paul |
author_facet |
Spence, P Saenko, OA Sijp, WP England, MH Spence, Paul |
author_sort |
Spence, P |
title |
The role of bottom pressure torques on the interior pathways of North Atlantic Deep Water |
title_short |
The role of bottom pressure torques on the interior pathways of North Atlantic Deep Water |
title_full |
The role of bottom pressure torques on the interior pathways of North Atlantic Deep Water |
title_fullStr |
The role of bottom pressure torques on the interior pathways of North Atlantic Deep Water |
title_full_unstemmed |
The role of bottom pressure torques on the interior pathways of North Atlantic Deep Water |
title_sort |
role of bottom pressure torques on the interior pathways of north atlantic deep water |
publisher |
American Meteorological Society |
publishDate |
2012 |
url |
http://hdl.handle.net/1959.4/unsworks_41979 https://doi.org/10.1175/2011JPO4584.1 |
genre |
Labrador Sea NADW North Atlantic Deep Water North Atlantic |
genre_facet |
Labrador Sea NADW North Atlantic Deep Water North Atlantic |
op_source |
urn:ISSN:0022-3670 urn:ISSN:1520-0485 Journal of Physical Oceanography, 42, 1, 110-125 |
op_relation |
http://purl.org/au-research/grants/arc/FL100100214 http://hdl.handle.net/1959.4/unsworks_41979 https://doi.org/10.1175/2011JPO4584.1 |
op_rights |
metadata only access http://purl.org/coar/access_right/c_14cb CC-BY-NC-ND https://creativecommons.org/licenses/by-nc-nd/4.0/ |
op_doi |
https://doi.org/10.1175/2011JPO4584.1 |
container_title |
Journal of Physical Oceanography |
container_volume |
42 |
container_issue |
1 |
container_start_page |
110 |
op_container_end_page |
125 |
_version_ |
1798849135306080256 |