Circulation, heat, and freshwater transport at 36°N in the Atlantic
In May and June 2005, a transatlantic hydrographic section along 36°N was occupied. A velocity field is calculated using inverse methods. The derived 36°N circulation has an overturning transport (maximum in the overturning streamfunction) of 16.6 Sv (1 Sv ≡ 106 m3 s−1) at 1070 m. The heat transport...
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ftnerc:oai:nora.nerc.ac.uk:255991 2023-05-15T15:06:18+02:00 Circulation, heat, and freshwater transport at 36°N in the Atlantic McDonagh, E.L. McLeod, P. King, B.A. Bryden, H.L. Torres-Valdes, S. 2010-12 http://nora.nerc.ac.uk/id/eprint/255991/ https://doi.org/10.1175/2010JPO4176.1 unknown McDonagh, E.L.; McLeod, P.; King, B.A. orcid:0000-0003-1338-3234 Bryden, H.L.; Torres-Valdes, S. 2010 Circulation, heat, and freshwater transport at 36°N in the Atlantic. Journal of Physical Oceanography, 40. 2661-2678. https://doi.org/10.1175/2010JPO4176.1 <https://doi.org/10.1175/2010JPO4176.1> Publication - Article PeerReviewed 2010 ftnerc https://doi.org/10.1175/2010JPO4176.1 2023-02-04T19:35:41Z In May and June 2005, a transatlantic hydrographic section along 36°N was occupied. A velocity field is calculated using inverse methods. The derived 36°N circulation has an overturning transport (maximum in the overturning streamfunction) of 16.6 Sv (1 Sv ≡ 106 m3 s−1) at 1070 m. The heat transport across the section, 1.14 ± 0.12 PW, is partitioned into overturning and horizontal heat transports of 0.75 and 0.39 PW, respectively. The horizontal heat flux is set by variability at the gyre rather than by mesoscale. The freshwater flux across the section is 1.55 ± 0.18 Sv southward based on a 0.8-Sv flow from the Pacific through the Bering Strait at a salinity of 32.5 psu. The oceanic divergence of freshwater implies a net input of freshwater to the ocean of 0.75 Sv over the North Atlantic and Arctic between 36°N and the Bering Strait. Most (85%) of the recently ventilated upper North Atlantic Deep Water (water originating in the Labrador Sea) transport across the section occurs in the deep western boundary current rather than being associated with an interior pathway to the west of the mid-Atlantic ridge. Article in Journal/Newspaper Arctic Bering Strait Labrador Sea North Atlantic Deep Water North Atlantic Natural Environment Research Council: NERC Open Research Archive Arctic Bering Strait Mid-Atlantic Ridge Pacific Journal of Physical Oceanography 40 12 2661 2678 |
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Open Polar |
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Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
unknown |
description |
In May and June 2005, a transatlantic hydrographic section along 36°N was occupied. A velocity field is calculated using inverse methods. The derived 36°N circulation has an overturning transport (maximum in the overturning streamfunction) of 16.6 Sv (1 Sv ≡ 106 m3 s−1) at 1070 m. The heat transport across the section, 1.14 ± 0.12 PW, is partitioned into overturning and horizontal heat transports of 0.75 and 0.39 PW, respectively. The horizontal heat flux is set by variability at the gyre rather than by mesoscale. The freshwater flux across the section is 1.55 ± 0.18 Sv southward based on a 0.8-Sv flow from the Pacific through the Bering Strait at a salinity of 32.5 psu. The oceanic divergence of freshwater implies a net input of freshwater to the ocean of 0.75 Sv over the North Atlantic and Arctic between 36°N and the Bering Strait. Most (85%) of the recently ventilated upper North Atlantic Deep Water (water originating in the Labrador Sea) transport across the section occurs in the deep western boundary current rather than being associated with an interior pathway to the west of the mid-Atlantic ridge. |
format |
Article in Journal/Newspaper |
author |
McDonagh, E.L. McLeod, P. King, B.A. Bryden, H.L. Torres-Valdes, S. |
spellingShingle |
McDonagh, E.L. McLeod, P. King, B.A. Bryden, H.L. Torres-Valdes, S. Circulation, heat, and freshwater transport at 36°N in the Atlantic |
author_facet |
McDonagh, E.L. McLeod, P. King, B.A. Bryden, H.L. Torres-Valdes, S. |
author_sort |
McDonagh, E.L. |
title |
Circulation, heat, and freshwater transport at 36°N in the Atlantic |
title_short |
Circulation, heat, and freshwater transport at 36°N in the Atlantic |
title_full |
Circulation, heat, and freshwater transport at 36°N in the Atlantic |
title_fullStr |
Circulation, heat, and freshwater transport at 36°N in the Atlantic |
title_full_unstemmed |
Circulation, heat, and freshwater transport at 36°N in the Atlantic |
title_sort |
circulation, heat, and freshwater transport at 36°n in the atlantic |
publishDate |
2010 |
url |
http://nora.nerc.ac.uk/id/eprint/255991/ https://doi.org/10.1175/2010JPO4176.1 |
geographic |
Arctic Bering Strait Mid-Atlantic Ridge Pacific |
geographic_facet |
Arctic Bering Strait Mid-Atlantic Ridge Pacific |
genre |
Arctic Bering Strait Labrador Sea North Atlantic Deep Water North Atlantic |
genre_facet |
Arctic Bering Strait Labrador Sea North Atlantic Deep Water North Atlantic |
op_relation |
McDonagh, E.L.; McLeod, P.; King, B.A. orcid:0000-0003-1338-3234 Bryden, H.L.; Torres-Valdes, S. 2010 Circulation, heat, and freshwater transport at 36°N in the Atlantic. Journal of Physical Oceanography, 40. 2661-2678. https://doi.org/10.1175/2010JPO4176.1 <https://doi.org/10.1175/2010JPO4176.1> |
op_doi |
https://doi.org/10.1175/2010JPO4176.1 |
container_title |
Journal of Physical Oceanography |
container_volume |
40 |
container_issue |
12 |
container_start_page |
2661 |
op_container_end_page |
2678 |
_version_ |
1766337939427557376 |