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Diffusion-rotational parameterization of eddy fluxes of potential vorticity: Barotropic flow in the zonal channel

Diffusion-rotational parameterization of eddy fluxes of potential vorticity: Barotropic flow in the zonal channel
Diffusion-rotational parameterization of eddy fluxes of potential vorticity: Barotropic flow in the zonal channel
The problem of parameterizing the eddy flux of a potential vorticity is discussed. The traditional diffusion parameterization is complemented by the inclusion of the rotational component. The new scheme is analyzed using a quasi-geostrophic model of the dynamics of the barotropic flow in a zonal channel with a nonflat bottom. An analytical solution of the problem is found and the influence of topography on the flow disturbances is discussed. An equation for the eddy potential enstrophy is used, which makes it possible to relate the diffusion and rotational coefficients.
0001-4338
1-16
Ivchenko, V. O.
3988bc16-175d-4249-bc0e-0b096cc7b3a6
Zalesny, V. B.
f498beb9-4ac3-410e-b563-0deeeb1f8e9e
Ivchenko, V. O.
3988bc16-175d-4249-bc0e-0b096cc7b3a6
Zalesny, V. B.
f498beb9-4ac3-410e-b563-0deeeb1f8e9e

Ivchenko, V. O. and Zalesny, V. B. (2019) Diffusion-rotational parameterization of eddy fluxes of potential vorticity: Barotropic flow in the zonal channel. Izvestiya, Atmospheric and Oceanic Physics, 55 (1), 1-16. (doi:10.1134/S0001433819010055).

Record type: Article

Abstract

The problem of parameterizing the eddy flux of a potential vorticity is discussed. The traditional diffusion parameterization is complemented by the inclusion of the rotational component. The new scheme is analyzed using a quasi-geostrophic model of the dynamics of the barotropic flow in a zonal channel with a nonflat bottom. An analytical solution of the problem is found and the influence of topography on the flow disturbances is discussed. An equation for the eddy potential enstrophy is used, which makes it possible to relate the diffusion and rotational coefficients.

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Accepted/In Press date: 28 November 2018
e-pub ahead of print date: 19 April 2019

Identifiers

Local EPrints ID: 431767
URI: https://eprints.soton.ac.uk/id/eprint/431767
ISSN: 0001-4338
PURE UUID: bf15f307-bd98-45f3-a704-d38c3c929ff6

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Date deposited: 14 Jun 2019 16:30
Last modified: 14 Jun 2019 16:30

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Contributors

Author: V. O. Ivchenko
Author: V. B. Zalesny

University divisions

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