Controlling spurious diapycnal mixing in eddy-resolving height-coordinate ocean models – Insights from virtual deliberate tracer release experiments
A perceived limitation of z-coordinate models associated with spurious diapycnal mixing in eddying, frontal flow, can be readily addressed through appropriate attention to the tracer advection schemes employed. It is demonstrated that tracer advection schemes developed by Prather and collaborators f...
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ftdatacite:10.7916/d88w3d7q 2023-05-15T13:59:39+02:00 Controlling spurious diapycnal mixing in eddy-resolving height-coordinate ocean models – Insights from virtual deliberate tracer release experiments Hill, Chris Ferreira, David Campin, Jean-Michel Marshall, John Abernathey, Ryan Patrick Barrier, Nicolas 2012 https://dx.doi.org/10.7916/d88w3d7q https://academiccommons.columbia.edu/doi/10.7916/D88W3D7Q unknown Columbia University https://dx.doi.org/10.1016/j.ocemod.2011.12.001 Ocean circulation Eddies Oceanic mixing--Mathematical models Oceanography Text Articles article-journal ScholarlyArticle 2012 ftdatacite https://doi.org/10.7916/d88w3d7q https://doi.org/10.1016/j.ocemod.2011.12.001 2021-11-05T12:55:41Z A perceived limitation of z-coordinate models associated with spurious diapycnal mixing in eddying, frontal flow, can be readily addressed through appropriate attention to the tracer advection schemes employed. It is demonstrated that tracer advection schemes developed by Prather and collaborators for application in the stratosphere, greatly improve the fidelity of eddying flows, reducing levels of spurious diapycnal mixing to below those directly measured in field experiments, ∼1 × 10⁻⁵ m² s⁻¹. This approach yields a model in which geostrophic eddies are quasi-adiabatic in the ocean interior, so that the residual-mean overturning circulation aligns almost perfectly with density contours. A reentrant channel configuration of the MIT General Circulation Model, that approximates the Antarctic Circumpolar Current, is used to examine these issues. Virtual analogs of ocean deliberate tracer release field experiments reinforce our conclusion, producing passive tracer solutions that parallel field experiments remarkably well. Text Antarc* Antarctic DataCite Metadata Store (German National Library of Science and Technology) Antarctic The Antarctic |
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DataCite Metadata Store (German National Library of Science and Technology) |
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topic |
Ocean circulation Eddies Oceanic mixing--Mathematical models Oceanography |
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Ocean circulation Eddies Oceanic mixing--Mathematical models Oceanography Hill, Chris Ferreira, David Campin, Jean-Michel Marshall, John Abernathey, Ryan Patrick Barrier, Nicolas Controlling spurious diapycnal mixing in eddy-resolving height-coordinate ocean models – Insights from virtual deliberate tracer release experiments |
topic_facet |
Ocean circulation Eddies Oceanic mixing--Mathematical models Oceanography |
description |
A perceived limitation of z-coordinate models associated with spurious diapycnal mixing in eddying, frontal flow, can be readily addressed through appropriate attention to the tracer advection schemes employed. It is demonstrated that tracer advection schemes developed by Prather and collaborators for application in the stratosphere, greatly improve the fidelity of eddying flows, reducing levels of spurious diapycnal mixing to below those directly measured in field experiments, ∼1 × 10⁻⁵ m² s⁻¹. This approach yields a model in which geostrophic eddies are quasi-adiabatic in the ocean interior, so that the residual-mean overturning circulation aligns almost perfectly with density contours. A reentrant channel configuration of the MIT General Circulation Model, that approximates the Antarctic Circumpolar Current, is used to examine these issues. Virtual analogs of ocean deliberate tracer release field experiments reinforce our conclusion, producing passive tracer solutions that parallel field experiments remarkably well. |
format |
Text |
author |
Hill, Chris Ferreira, David Campin, Jean-Michel Marshall, John Abernathey, Ryan Patrick Barrier, Nicolas |
author_facet |
Hill, Chris Ferreira, David Campin, Jean-Michel Marshall, John Abernathey, Ryan Patrick Barrier, Nicolas |
author_sort |
Hill, Chris |
title |
Controlling spurious diapycnal mixing in eddy-resolving height-coordinate ocean models – Insights from virtual deliberate tracer release experiments |
title_short |
Controlling spurious diapycnal mixing in eddy-resolving height-coordinate ocean models – Insights from virtual deliberate tracer release experiments |
title_full |
Controlling spurious diapycnal mixing in eddy-resolving height-coordinate ocean models – Insights from virtual deliberate tracer release experiments |
title_fullStr |
Controlling spurious diapycnal mixing in eddy-resolving height-coordinate ocean models – Insights from virtual deliberate tracer release experiments |
title_full_unstemmed |
Controlling spurious diapycnal mixing in eddy-resolving height-coordinate ocean models – Insights from virtual deliberate tracer release experiments |
title_sort |
controlling spurious diapycnal mixing in eddy-resolving height-coordinate ocean models – insights from virtual deliberate tracer release experiments |
publisher |
Columbia University |
publishDate |
2012 |
url |
https://dx.doi.org/10.7916/d88w3d7q https://academiccommons.columbia.edu/doi/10.7916/D88W3D7Q |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
https://dx.doi.org/10.1016/j.ocemod.2011.12.001 |
op_doi |
https://doi.org/10.7916/d88w3d7q https://doi.org/10.1016/j.ocemod.2011.12.001 |
_version_ |
1766268323746545664 |