Is the coefficient of eddy potential vorticity diffusion positive?: Part 1: barotropic zonal channel
The question of whether the coefficient of diffusivity of potential vorticity by mesoscale eddies is positive is studied for a zonally reentrant barotropic channel using the quasi-geostrophic approach. The topography is limited to the first mode in the meridional direction but is unlimited in the zo...
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ftsouthampton:oai:eprints.soton.ac.uk:422290 2023-07-30T03:57:35+02:00 Is the coefficient of eddy potential vorticity diffusion positive?: Part 1: barotropic zonal channel Ivchenko, V.O. Zalesny, V.B. Sinha, B. 2018-07 text https://eprints.soton.ac.uk/422290/ https://eprints.soton.ac.uk/422290/1/text_ACCEPTED_JPO_8_May_and_change_citation_after_eq_6.pdf en English eng https://eprints.soton.ac.uk/422290/1/text_ACCEPTED_JPO_8_May_and_change_citation_after_eq_6.pdf Ivchenko, V.O., Zalesny, V.B. and Sinha, B. (2018) Is the coefficient of eddy potential vorticity diffusion positive?: Part 1: barotropic zonal channel. Journal of Physical Oceanography, 1589-1607. (doi:10.1175/JPO-D-17-0229.1 <http://dx.doi.org/10.1175/JPO-D-17-0229.1>). accepted_manuscript Article PeerReviewed 2018 ftsouthampton 2023-07-09T22:23:42Z The question of whether the coefficient of diffusivity of potential vorticity by mesoscale eddies is positive is studied for a zonally reentrant barotropic channel using the quasi-geostrophic approach. The topography is limited to the first mode in the meridional direction but is unlimited in the zonal direction. We derive an analytic solution for the stationary (time-independent) solution. New terms associated with parameterized eddy fluxes of potential vorticity appear both in the equations for the mean zonal momentum balance, and the kinetic energy balance. These terms are linked with the topographic form stress exerted by parameterized eddies. It is demonstrated that in regimes with zonal flow (analogous to the Antarctic Circumpolar Current), the coefficient of eddy potential vorticity diffusivity must be positive. Article in Journal/Newspaper Antarc* Antarctic University of Southampton: e-Prints Soton Antarctic The Antarctic |
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Open Polar |
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University of Southampton: e-Prints Soton |
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ftsouthampton |
language |
English |
description |
The question of whether the coefficient of diffusivity of potential vorticity by mesoscale eddies is positive is studied for a zonally reentrant barotropic channel using the quasi-geostrophic approach. The topography is limited to the first mode in the meridional direction but is unlimited in the zonal direction. We derive an analytic solution for the stationary (time-independent) solution. New terms associated with parameterized eddy fluxes of potential vorticity appear both in the equations for the mean zonal momentum balance, and the kinetic energy balance. These terms are linked with the topographic form stress exerted by parameterized eddies. It is demonstrated that in regimes with zonal flow (analogous to the Antarctic Circumpolar Current), the coefficient of eddy potential vorticity diffusivity must be positive. |
format |
Article in Journal/Newspaper |
author |
Ivchenko, V.O. Zalesny, V.B. Sinha, B. |
spellingShingle |
Ivchenko, V.O. Zalesny, V.B. Sinha, B. Is the coefficient of eddy potential vorticity diffusion positive?: Part 1: barotropic zonal channel |
author_facet |
Ivchenko, V.O. Zalesny, V.B. Sinha, B. |
author_sort |
Ivchenko, V.O. |
title |
Is the coefficient of eddy potential vorticity diffusion positive?: Part 1: barotropic zonal channel |
title_short |
Is the coefficient of eddy potential vorticity diffusion positive?: Part 1: barotropic zonal channel |
title_full |
Is the coefficient of eddy potential vorticity diffusion positive?: Part 1: barotropic zonal channel |
title_fullStr |
Is the coefficient of eddy potential vorticity diffusion positive?: Part 1: barotropic zonal channel |
title_full_unstemmed |
Is the coefficient of eddy potential vorticity diffusion positive?: Part 1: barotropic zonal channel |
title_sort |
is the coefficient of eddy potential vorticity diffusion positive?: part 1: barotropic zonal channel |
publishDate |
2018 |
url |
https://eprints.soton.ac.uk/422290/ https://eprints.soton.ac.uk/422290/1/text_ACCEPTED_JPO_8_May_and_change_citation_after_eq_6.pdf |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
https://eprints.soton.ac.uk/422290/1/text_ACCEPTED_JPO_8_May_and_change_citation_after_eq_6.pdf Ivchenko, V.O., Zalesny, V.B. and Sinha, B. (2018) Is the coefficient of eddy potential vorticity diffusion positive?: Part 1: barotropic zonal channel. Journal of Physical Oceanography, 1589-1607. (doi:10.1175/JPO-D-17-0229.1 <http://dx.doi.org/10.1175/JPO-D-17-0229.1>). |
op_rights |
accepted_manuscript |
_version_ |
1772818203404140544 |