1286 JOURNAL OF PHYSICAL OCEANOGRAPHY VOLUME 27 Why Potential Vorticity Is Not Conserved along Mean Streamlines in a Numerical Southern
Potential vorticity (PV) is used as an indicator of the forcing processes and dissipation at work in the Southern Ocean. Output from the Semtner–Chervin model run with quarter-degree resolution is considered on isopycnal surfaces along Montgomery streamfunctions. Numerical results are compared with...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.412.230 2023-05-15T18:25:20+02:00 1286 JOURNAL OF PHYSICAL OCEANOGRAPHY VOLUME 27 Why Potential Vorticity Is Not Conserved along Mean Streamlines in a Numerical Southern Sarah T. Gille The Pennsylvania State University CiteSeerX Archives 1996 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.412.230 http://www-pord.ucsd.edu/~sgille/pub_dir/jpo_gille_1997_pv.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.412.230 http://www-pord.ucsd.edu/~sgille/pub_dir/jpo_gille_1997_pv.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www-pord.ucsd.edu/~sgille/pub_dir/jpo_gille_1997_pv.pdf text 1996 ftciteseerx 2016-01-08T03:24:08Z Potential vorticity (PV) is used as an indicator of the forcing processes and dissipation at work in the Southern Ocean. Output from the Semtner–Chervin model run with quarter-degree resolution is considered on isopycnal surfaces along Montgomery streamfunctions. Numerical results are compared with hydrographic measurements. Although simple hypotheses might suggest that subsurface PV should be unaffected by wind forcing and constant along streamlines, these results indicate that even at about 1000-m depth, PV varies along mean streamlines in both the numerical model output and in the in situ observations. The changes in PV are largely represented by stratification changes rather than shifts in the Coriolis parameter or in relative vorticity. In the numerical model output, a combination of mechanisms is responsible for these changes in PV, including transient tracer fluxes, transient momentum fluxes, diffusive processes, and long-term tracer drift. 1. Text Southern Ocean Unknown Southern Ocean |
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language |
English |
description |
Potential vorticity (PV) is used as an indicator of the forcing processes and dissipation at work in the Southern Ocean. Output from the Semtner–Chervin model run with quarter-degree resolution is considered on isopycnal surfaces along Montgomery streamfunctions. Numerical results are compared with hydrographic measurements. Although simple hypotheses might suggest that subsurface PV should be unaffected by wind forcing and constant along streamlines, these results indicate that even at about 1000-m depth, PV varies along mean streamlines in both the numerical model output and in the in situ observations. The changes in PV are largely represented by stratification changes rather than shifts in the Coriolis parameter or in relative vorticity. In the numerical model output, a combination of mechanisms is responsible for these changes in PV, including transient tracer fluxes, transient momentum fluxes, diffusive processes, and long-term tracer drift. 1. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Sarah T. Gille |
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Sarah T. Gille 1286 JOURNAL OF PHYSICAL OCEANOGRAPHY VOLUME 27 Why Potential Vorticity Is Not Conserved along Mean Streamlines in a Numerical Southern |
author_facet |
Sarah T. Gille |
author_sort |
Sarah T. Gille |
title |
1286 JOURNAL OF PHYSICAL OCEANOGRAPHY VOLUME 27 Why Potential Vorticity Is Not Conserved along Mean Streamlines in a Numerical Southern |
title_short |
1286 JOURNAL OF PHYSICAL OCEANOGRAPHY VOLUME 27 Why Potential Vorticity Is Not Conserved along Mean Streamlines in a Numerical Southern |
title_full |
1286 JOURNAL OF PHYSICAL OCEANOGRAPHY VOLUME 27 Why Potential Vorticity Is Not Conserved along Mean Streamlines in a Numerical Southern |
title_fullStr |
1286 JOURNAL OF PHYSICAL OCEANOGRAPHY VOLUME 27 Why Potential Vorticity Is Not Conserved along Mean Streamlines in a Numerical Southern |
title_full_unstemmed |
1286 JOURNAL OF PHYSICAL OCEANOGRAPHY VOLUME 27 Why Potential Vorticity Is Not Conserved along Mean Streamlines in a Numerical Southern |
title_sort |
1286 journal of physical oceanography volume 27 why potential vorticity is not conserved along mean streamlines in a numerical southern |
publishDate |
1996 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.412.230 http://www-pord.ucsd.edu/~sgille/pub_dir/jpo_gille_1997_pv.pdf |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_source |
http://www-pord.ucsd.edu/~sgille/pub_dir/jpo_gille_1997_pv.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.412.230 http://www-pord.ucsd.edu/~sgille/pub_dir/jpo_gille_1997_pv.pdf |
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Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766206706753208320 |