Lagrangian perspectives of deep water export from the subpolar North Atlantic
Direct observations at the Grand Banks have raised a quandary concerning the pathways of the lower branch of the meridional overturning circulation: In contrast to moored current meters that depict an intense, narrow Deep Western Boundary Current (DWBC), observations using different float types fail...
Published in: | Geophysical Research Letters |
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Language: | English |
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AGU (American Geophysical Union)
2006
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Online Access: | https://oceanrep.geomar.de/id/eprint/6345/ https://oceanrep.geomar.de/id/eprint/6345/1/Getzlaff_et_al-2006-Geophysical_Research_Letters.pdf https://doi.org/10.1029/2006GL026470 |
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ftoceanrep:oai:oceanrep.geomar.de:6345 2023-05-15T17:32:27+02:00 Lagrangian perspectives of deep water export from the subpolar North Atlantic Getzlaff, Klaus Böning, Claus W. Dengg, Joachim 2006 text https://oceanrep.geomar.de/id/eprint/6345/ https://oceanrep.geomar.de/id/eprint/6345/1/Getzlaff_et_al-2006-Geophysical_Research_Letters.pdf https://doi.org/10.1029/2006GL026470 en eng AGU (American Geophysical Union) https://oceanrep.geomar.de/id/eprint/6345/1/Getzlaff_et_al-2006-Geophysical_Research_Letters.pdf Getzlaff, K. , Böning, C. W. and Dengg, J. (2006) Lagrangian perspectives of deep water export from the subpolar North Atlantic. Open Access Geophysical Research Letters, 33 (L21S08). DOI 10.1029/2006GL026470 <https://doi.org/10.1029/2006GL026470>. doi:10.1029/2006GL026470 info:eu-repo/semantics/openAccess Article PeerReviewed 2006 ftoceanrep https://doi.org/10.1029/2006GL026470 2023-04-07T14:52:48Z Direct observations at the Grand Banks have raised a quandary concerning the pathways of the lower branch of the meridional overturning circulation: In contrast to moored current meters that depict an intense, narrow Deep Western Boundary Current (DWBC), observations using different float types failed to show this continuous export path. Here, this issue is addressed by a Lagrangian analysis of synthetic particles in an eddy-resolving circulation model. Due to intense eddy activity around the Grand Banks, about 40% of the deep water in the DWBC is diverted into the interior, spreading southward along the western flank of the Mid-Atlantic Ridge or with the eddying flow field in the basin interior. Imposing constraints on the vertical displacements of particles similar to those experienced by observational floats further reduces their adherence to the DWBC, particularly near the southern tip of the Grand Banks. Article in Journal/Newspaper North Atlantic OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Mid-Atlantic Ridge Quandary ENVELOPE(-61.580,-61.580,-64.864,-64.864) Geophysical Research Letters 33 21 |
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Open Polar |
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OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
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ftoceanrep |
language |
English |
description |
Direct observations at the Grand Banks have raised a quandary concerning the pathways of the lower branch of the meridional overturning circulation: In contrast to moored current meters that depict an intense, narrow Deep Western Boundary Current (DWBC), observations using different float types failed to show this continuous export path. Here, this issue is addressed by a Lagrangian analysis of synthetic particles in an eddy-resolving circulation model. Due to intense eddy activity around the Grand Banks, about 40% of the deep water in the DWBC is diverted into the interior, spreading southward along the western flank of the Mid-Atlantic Ridge or with the eddying flow field in the basin interior. Imposing constraints on the vertical displacements of particles similar to those experienced by observational floats further reduces their adherence to the DWBC, particularly near the southern tip of the Grand Banks. |
format |
Article in Journal/Newspaper |
author |
Getzlaff, Klaus Böning, Claus W. Dengg, Joachim |
spellingShingle |
Getzlaff, Klaus Böning, Claus W. Dengg, Joachim Lagrangian perspectives of deep water export from the subpolar North Atlantic |
author_facet |
Getzlaff, Klaus Böning, Claus W. Dengg, Joachim |
author_sort |
Getzlaff, Klaus |
title |
Lagrangian perspectives of deep water export from the subpolar North Atlantic |
title_short |
Lagrangian perspectives of deep water export from the subpolar North Atlantic |
title_full |
Lagrangian perspectives of deep water export from the subpolar North Atlantic |
title_fullStr |
Lagrangian perspectives of deep water export from the subpolar North Atlantic |
title_full_unstemmed |
Lagrangian perspectives of deep water export from the subpolar North Atlantic |
title_sort |
lagrangian perspectives of deep water export from the subpolar north atlantic |
publisher |
AGU (American Geophysical Union) |
publishDate |
2006 |
url |
https://oceanrep.geomar.de/id/eprint/6345/ https://oceanrep.geomar.de/id/eprint/6345/1/Getzlaff_et_al-2006-Geophysical_Research_Letters.pdf https://doi.org/10.1029/2006GL026470 |
long_lat |
ENVELOPE(-61.580,-61.580,-64.864,-64.864) |
geographic |
Mid-Atlantic Ridge Quandary |
geographic_facet |
Mid-Atlantic Ridge Quandary |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
https://oceanrep.geomar.de/id/eprint/6345/1/Getzlaff_et_al-2006-Geophysical_Research_Letters.pdf Getzlaff, K. , Böning, C. W. and Dengg, J. (2006) Lagrangian perspectives of deep water export from the subpolar North Atlantic. Open Access Geophysical Research Letters, 33 (L21S08). DOI 10.1029/2006GL026470 <https://doi.org/10.1029/2006GL026470>. doi:10.1029/2006GL026470 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1029/2006GL026470 |
container_title |
Geophysical Research Letters |
container_volume |
33 |
container_issue |
21 |
_version_ |
1766130589038018560 |