Cancellation of the Deacon Cell by Vertical Eddy Fluxes
The Overturning Circulation of the Southern Ocean has been investigated using a state of the art, eddy resolving ocean-sea ice model. The overturning circulation at constant depth and latitude reveals a 'Deacon Cell', a wind-driven meridional cell which acts to flux light surface waters No...
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ftunivnantes:oai:HAL:hal-00592075v1 2023-05-15T13:58:17+02:00 Cancellation of the Deacon Cell by Vertical Eddy Fluxes Zika, Jan D. Laboratoire des Écoulements Géophysiques et Industriels Grenoble (LEGI) Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS) 2011-04-13 https://hal.science/hal-00592075 https://hal.science/hal-00592075/document https://hal.science/hal-00592075/file/Zika_Deacon_Cancel_GRL_subm_2col_y11m04d13.pdf en eng HAL CCSD hal-00592075 https://hal.science/hal-00592075 https://hal.science/hal-00592075/document https://hal.science/hal-00592075/file/Zika_Deacon_Cancel_GRL_subm_2col_y11m04d13.pdf info:eu-repo/semantics/OpenAccess https://hal.science/hal-00592075 2011 [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography info:eu-repo/semantics/preprint Preprints, Working Papers, . 2011 ftunivnantes 2023-03-01T00:28:40Z The Overturning Circulation of the Southern Ocean has been investigated using a state of the art, eddy resolving ocean-sea ice model. The overturning circulation at constant depth and latitude reveals a 'Deacon Cell', a wind-driven meridional cell which acts to flux light surface waters Northward and downward and dense deep waters Southward and upward. The overturning has been further analysed in density-latitude space. Northward transport of light water and Southward transport of dense water by the Deacon Cell are compensated by the standing meanders of the Antarctic Circumpolar Current and other stationary features. The overturning has been finally analysed in depth-density space. Here, the Deacon Cell is compensated by transient eddy fluxes. We thus propose a new paradigm to conceptualize the Southern Ocean Overturning Circulation: the ACC's standing meanders transport light water Southward and dense water Northward with little vertical excursion; transient eddies then act on the resulting zonal gradients of isopycnals, transporting light water upward and dense water downward. Although transient eddies have previously been shown to play a minor role in meridional exchanges in the Southern Ocean, here they are found to play a crucial role in vertical exchanges. Report Antarc* Antarctic Sea ice Southern Ocean Université de Nantes: HAL-UNIV-NANTES Antarctic Deacon ENVELOPE(-59.987,-59.987,-73.248,-73.248) Southern Ocean The Antarctic |
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Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
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[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography Zika, Jan D. Cancellation of the Deacon Cell by Vertical Eddy Fluxes |
topic_facet |
[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
description |
The Overturning Circulation of the Southern Ocean has been investigated using a state of the art, eddy resolving ocean-sea ice model. The overturning circulation at constant depth and latitude reveals a 'Deacon Cell', a wind-driven meridional cell which acts to flux light surface waters Northward and downward and dense deep waters Southward and upward. The overturning has been further analysed in density-latitude space. Northward transport of light water and Southward transport of dense water by the Deacon Cell are compensated by the standing meanders of the Antarctic Circumpolar Current and other stationary features. The overturning has been finally analysed in depth-density space. Here, the Deacon Cell is compensated by transient eddy fluxes. We thus propose a new paradigm to conceptualize the Southern Ocean Overturning Circulation: the ACC's standing meanders transport light water Southward and dense water Northward with little vertical excursion; transient eddies then act on the resulting zonal gradients of isopycnals, transporting light water upward and dense water downward. Although transient eddies have previously been shown to play a minor role in meridional exchanges in the Southern Ocean, here they are found to play a crucial role in vertical exchanges. |
author2 |
Laboratoire des Écoulements Géophysiques et Industriels Grenoble (LEGI) Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS) |
format |
Report |
author |
Zika, Jan D. |
author_facet |
Zika, Jan D. |
author_sort |
Zika, Jan D. |
title |
Cancellation of the Deacon Cell by Vertical Eddy Fluxes |
title_short |
Cancellation of the Deacon Cell by Vertical Eddy Fluxes |
title_full |
Cancellation of the Deacon Cell by Vertical Eddy Fluxes |
title_fullStr |
Cancellation of the Deacon Cell by Vertical Eddy Fluxes |
title_full_unstemmed |
Cancellation of the Deacon Cell by Vertical Eddy Fluxes |
title_sort |
cancellation of the deacon cell by vertical eddy fluxes |
publisher |
HAL CCSD |
publishDate |
2011 |
url |
https://hal.science/hal-00592075 https://hal.science/hal-00592075/document https://hal.science/hal-00592075/file/Zika_Deacon_Cancel_GRL_subm_2col_y11m04d13.pdf |
long_lat |
ENVELOPE(-59.987,-59.987,-73.248,-73.248) |
geographic |
Antarctic Deacon Southern Ocean The Antarctic |
geographic_facet |
Antarctic Deacon Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Sea ice Southern Ocean |
genre_facet |
Antarc* Antarctic Sea ice Southern Ocean |
op_source |
https://hal.science/hal-00592075 2011 |
op_relation |
hal-00592075 https://hal.science/hal-00592075 https://hal.science/hal-00592075/document https://hal.science/hal-00592075/file/Zika_Deacon_Cancel_GRL_subm_2col_y11m04d13.pdf |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1766266527595626496 |