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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Online Access: | https://centaur.reading.ac.uk/33168/ https://doi.org/10.1016/j.ocemod.2011.12.001 |
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ftunivreading:oai:centaur.reading.ac.uk:33168 2024-04-21T07:52:29+00:00 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 Barrier, Nicolas 2012 https://centaur.reading.ac.uk/33168/ https://doi.org/10.1016/j.ocemod.2011.12.001 unknown Elsevier Hill, C., Ferreira, D. <https://centaur.reading.ac.uk/view/creators/90005370.html> orcid:0000-0003-3243-9774 , Campin, J.-M., Marshall, J., Abernathey, R. and Barrier, N. (2012) Controlling spurious diapycnal mixing in eddy-resolving height-coordinate ocean models: insights from virtual deliberate tracer release experiments. Ocean modelling, 45-46. pp. 14-26. ISSN 1463-5003 doi: https://doi.org/10.1016/j.ocemod.2011.12.001 <https://doi.org/10.1016/j.ocemod.2011.12.001> Article PeerReviewed 2012 ftunivreading https://doi.org/10.1016/j.ocemod.2011.12.001 2024-03-27T17:59:43Z 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. Article in Journal/Newspaper Antarc* Antarctic CentAUR: Central Archive at the University of Reading Ocean Modelling 45-46 14 26 |
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Open Polar |
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CentAUR: Central Archive at the University of Reading |
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ftunivreading |
language |
unknown |
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 |
Article in Journal/Newspaper |
author |
Hill, Chris Ferreira, David Campin, Jean-Michel Marshall, John Abernathey, Ryan Barrier, Nicolas |
spellingShingle |
Hill, Chris Ferreira, David Campin, Jean-Michel Marshall, John Abernathey, Ryan Barrier, Nicolas Controlling spurious diapycnal mixing in eddy-resolving height-coordinate ocean models: insights from virtual deliberate tracer release experiments |
author_facet |
Hill, Chris Ferreira, David Campin, Jean-Michel Marshall, John Abernathey, Ryan 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 |
Elsevier |
publishDate |
2012 |
url |
https://centaur.reading.ac.uk/33168/ https://doi.org/10.1016/j.ocemod.2011.12.001 |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
Hill, C., Ferreira, D. <https://centaur.reading.ac.uk/view/creators/90005370.html> orcid:0000-0003-3243-9774 , Campin, J.-M., Marshall, J., Abernathey, R. and Barrier, N. (2012) Controlling spurious diapycnal mixing in eddy-resolving height-coordinate ocean models: insights from virtual deliberate tracer release experiments. Ocean modelling, 45-46. pp. 14-26. ISSN 1463-5003 doi: https://doi.org/10.1016/j.ocemod.2011.12.001 <https://doi.org/10.1016/j.ocemod.2011.12.001> |
op_doi |
https://doi.org/10.1016/j.ocemod.2011.12.001 |
container_title |
Ocean Modelling |
container_volume |
45-46 |
container_start_page |
14 |
op_container_end_page |
26 |
_version_ |
1796935714627125248 |