A Diagnosis of Anisotropic Eddy Diffusion From a High‐Resolution Global Ocean Model
Abstract Oceanic mesoscale eddies are known to diffuse and stir tracers, and the development of skillful eddy closures is aided considerably by the accurate diagnosis of these processes from eddy‐resolving model statistics. In this work a multiple‐tracers inversion method is applied to a global meso...
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2020-02-01
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Series: | Journal of Advances in Modeling Earth Systems |
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Online Access: | https://doi.org/10.1029/2019MS001904 |
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doaj-5b00f1c011b7459c83990a157810f6af2020-11-25T03:09:21ZengAmerican Geophysical Union (AGU)Journal of Advances in Modeling Earth Systems1942-24662020-02-01122n/an/a10.1029/2019MS001904A Diagnosis of Anisotropic Eddy Diffusion From a High‐Resolution Global Ocean ModelScott D. Bachman0Baylor Fox‐Kemper1Frank O. Bryan2National Center for Atmospheric Research Boulder CO USADepartment of Earth, Environmental, and Planetary Sciences Brown University Providence RI USANational Center for Atmospheric Research Boulder CO USAAbstract Oceanic mesoscale eddies are known to diffuse and stir tracers, and the development of skillful eddy closures is aided considerably by the accurate diagnosis of these processes from eddy‐resolving model statistics. In this work a multiple‐tracers inversion method is applied to a global mesoscale eddy‐resolving simulation, with the intent to solve for the eddy transport tensor that describes the eddy diffusion (symmetric part) and stirring (antisymmetric part). Special emphasis is placed on diagnosing the anisotropy of the horizontal transport, which is described by the eigenvalues and eigenvectors of the 2×2 horizontal symmetric subtensor. Global diagnoses of these quantities, along with an examination of their vertical structures, are used to recommend an algorithm for extending the Gent and McWilliams and Redi parameterizations to include anisotropic effects.https://doi.org/10.1029/2019MS001904mesoscale eddiesGent‐McWilliamseddy diffusionanisotropicsymmetric tensor |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Scott D. Bachman Baylor Fox‐Kemper Frank O. Bryan |
spellingShingle |
Scott D. Bachman Baylor Fox‐Kemper Frank O. Bryan A Diagnosis of Anisotropic Eddy Diffusion From a High‐Resolution Global Ocean Model Journal of Advances in Modeling Earth Systems mesoscale eddies Gent‐McWilliams eddy diffusion anisotropic symmetric tensor |
author_facet |
Scott D. Bachman Baylor Fox‐Kemper Frank O. Bryan |
author_sort |
Scott D. Bachman |
title |
A Diagnosis of Anisotropic Eddy Diffusion From a High‐Resolution Global Ocean Model |
title_short |
A Diagnosis of Anisotropic Eddy Diffusion From a High‐Resolution Global Ocean Model |
title_full |
A Diagnosis of Anisotropic Eddy Diffusion From a High‐Resolution Global Ocean Model |
title_fullStr |
A Diagnosis of Anisotropic Eddy Diffusion From a High‐Resolution Global Ocean Model |
title_full_unstemmed |
A Diagnosis of Anisotropic Eddy Diffusion From a High‐Resolution Global Ocean Model |
title_sort |
diagnosis of anisotropic eddy diffusion from a high‐resolution global ocean model |
publisher |
American Geophysical Union (AGU) |
series |
Journal of Advances in Modeling Earth Systems |
issn |
1942-2466 |
publishDate |
2020-02-01 |
description |
Abstract Oceanic mesoscale eddies are known to diffuse and stir tracers, and the development of skillful eddy closures is aided considerably by the accurate diagnosis of these processes from eddy‐resolving model statistics. In this work a multiple‐tracers inversion method is applied to a global mesoscale eddy‐resolving simulation, with the intent to solve for the eddy transport tensor that describes the eddy diffusion (symmetric part) and stirring (antisymmetric part). Special emphasis is placed on diagnosing the anisotropy of the horizontal transport, which is described by the eigenvalues and eigenvectors of the 2×2 horizontal symmetric subtensor. Global diagnoses of these quantities, along with an examination of their vertical structures, are used to recommend an algorithm for extending the Gent and McWilliams and Redi parameterizations to include anisotropic effects. |
topic |
mesoscale eddies Gent‐McWilliams eddy diffusion anisotropic symmetric tensor |
url |
https://doi.org/10.1029/2019MS001904 |
work_keys_str_mv |
AT scottdbachman adiagnosisofanisotropiceddydiffusionfromahighresolutionglobaloceanmodel AT baylorfoxkemper adiagnosisofanisotropiceddydiffusionfromahighresolutionglobaloceanmodel AT frankobryan adiagnosisofanisotropiceddydiffusionfromahighresolutionglobaloceanmodel AT scottdbachman diagnosisofanisotropiceddydiffusionfromahighresolutionglobaloceanmodel AT baylorfoxkemper diagnosisofanisotropiceddydiffusionfromahighresolutionglobaloceanmodel AT frankobryan diagnosisofanisotropiceddydiffusionfromahighresolutionglobaloceanmodel |
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1724663202350891008 |