Influence of assimilated eddies on the large-scale circulation in a model of the northwest Atlantic Ocean
In this letter, we apply a novel technique (the “semidiagnostic method”) to assimilate the eddy field from a model with constrained large-scale circulation into a model version with an unconstrained large-scale circulation. Assimilation of the eddies (i) drives an anomalous circulation corresponding...
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Online Access: | https://ueaeprints.uea.ac.uk/id/eprint/43790/ https://doi.org/10.1029/2005GL025139 |
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ftuniveastangl:oai:ueaeprints.uea.ac.uk:43790 2023-05-15T17:22:01+02:00 Influence of assimilated eddies on the large-scale circulation in a model of the northwest Atlantic Ocean Greatbatch, Richard J. Zhai, Xiaoming 2006-01-01 https://ueaeprints.uea.ac.uk/id/eprint/43790/ https://doi.org/10.1029/2005GL025139 unknown Greatbatch, Richard J. and Zhai, Xiaoming (2006) Influence of assimilated eddies on the large-scale circulation in a model of the northwest Atlantic Ocean. Geophysical Research Letters, 33 (2). ISSN 0094-8276 doi:10.1029/2005GL025139 Article PeerReviewed 2006 ftuniveastangl https://doi.org/10.1029/2005GL025139 2023-01-30T21:35:57Z In this letter, we apply a novel technique (the “semidiagnostic method”) to assimilate the eddy field from a model with constrained large-scale circulation into a model version with an unconstrained large-scale circulation. Assimilation of the eddies (i) drives an anomalous circulation corresponding to the northern recirculation gyre of the Gulf Stream, but of insufficient strength to appear in the mean field and (ii) leads to a much enhanced circulation in the northwest corner, east of Newfoundland. We argue that the blocking of f/H contours from the east by the mid-Atlantic Ridge is a major influence on the dynamics of the northwest corner, and that the dynamics of the eddy-driven northern recirculation and the northwest corner are fundamentally similar. Article in Journal/Newspaper Newfoundland Northwest Atlantic University of East Anglia: UEA Digital Repository Mid-Atlantic Ridge Geophysical Research Letters 33 2 |
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Open Polar |
collection |
University of East Anglia: UEA Digital Repository |
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ftuniveastangl |
language |
unknown |
description |
In this letter, we apply a novel technique (the “semidiagnostic method”) to assimilate the eddy field from a model with constrained large-scale circulation into a model version with an unconstrained large-scale circulation. Assimilation of the eddies (i) drives an anomalous circulation corresponding to the northern recirculation gyre of the Gulf Stream, but of insufficient strength to appear in the mean field and (ii) leads to a much enhanced circulation in the northwest corner, east of Newfoundland. We argue that the blocking of f/H contours from the east by the mid-Atlantic Ridge is a major influence on the dynamics of the northwest corner, and that the dynamics of the eddy-driven northern recirculation and the northwest corner are fundamentally similar. |
format |
Article in Journal/Newspaper |
author |
Greatbatch, Richard J. Zhai, Xiaoming |
spellingShingle |
Greatbatch, Richard J. Zhai, Xiaoming Influence of assimilated eddies on the large-scale circulation in a model of the northwest Atlantic Ocean |
author_facet |
Greatbatch, Richard J. Zhai, Xiaoming |
author_sort |
Greatbatch, Richard J. |
title |
Influence of assimilated eddies on the large-scale circulation in a model of the northwest Atlantic Ocean |
title_short |
Influence of assimilated eddies on the large-scale circulation in a model of the northwest Atlantic Ocean |
title_full |
Influence of assimilated eddies on the large-scale circulation in a model of the northwest Atlantic Ocean |
title_fullStr |
Influence of assimilated eddies on the large-scale circulation in a model of the northwest Atlantic Ocean |
title_full_unstemmed |
Influence of assimilated eddies on the large-scale circulation in a model of the northwest Atlantic Ocean |
title_sort |
influence of assimilated eddies on the large-scale circulation in a model of the northwest atlantic ocean |
publishDate |
2006 |
url |
https://ueaeprints.uea.ac.uk/id/eprint/43790/ https://doi.org/10.1029/2005GL025139 |
geographic |
Mid-Atlantic Ridge |
geographic_facet |
Mid-Atlantic Ridge |
genre |
Newfoundland Northwest Atlantic |
genre_facet |
Newfoundland Northwest Atlantic |
op_relation |
Greatbatch, Richard J. and Zhai, Xiaoming (2006) Influence of assimilated eddies on the large-scale circulation in a model of the northwest Atlantic Ocean. Geophysical Research Letters, 33 (2). ISSN 0094-8276 doi:10.1029/2005GL025139 |
op_doi |
https://doi.org/10.1029/2005GL025139 |
container_title |
Geophysical Research Letters |
container_volume |
33 |
container_issue |
2 |
_version_ |
1766108241872289792 |