Ocean and Atmosphere Storm Tracks: The Role of Eddy Vorticity Forcing
Signatures of eddy variability and vorticity forcing are diagnosed in the atmosphere and ocean from weather center reanalysis and altimetric data broadly covering the same period, 1992–2002. In the atmo-sphere, there are localized regions of eddy variability referred to as storm tracks. At the entra...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.602.1067 2023-05-15T14:02:07+02:00 Ocean and Atmosphere Storm Tracks: The Role of Eddy Vorticity Forcing Richard G. Williams Chris Wilson Chris W. Hughes The Pennsylvania State University CiteSeerX Archives 2006 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.602.1067 http://atoc.colorado.edu/~jweiss/5060/WilliamsEtAl2007annotated.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.602.1067 http://atoc.colorado.edu/~jweiss/5060/WilliamsEtAl2007annotated.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://atoc.colorado.edu/~jweiss/5060/WilliamsEtAl2007annotated.pdf text 2006 ftciteseerx 2016-01-08T14:04:59Z Signatures of eddy variability and vorticity forcing are diagnosed in the atmosphere and ocean from weather center reanalysis and altimetric data broadly covering the same period, 1992–2002. In the atmo-sphere, there are localized regions of eddy variability referred to as storm tracks. At the entrance of the storm track the eddies grow, providing a downgradient heat flux and accelerating the mean flow eastward. At the exit and downstream of the storm track, the eddies decay and instead provide a westward accel-eration. In the ocean, there are similar regions of enhanced eddy variability along the extension of mid-latitude boundary currents and the Antarctic Circumpolar Current. Within these regions of high eddy kinetic energy, there are more localized signals of high Eady growth rate and downgradient eddy heat fluxes. As in the atmosphere, there are localized regions in the Southern Ocean where ocean eddies provide statistically significant vorticity forcing, which acts to accelerate the mean flow eastward, provide torques to shift the jet, or decelerate the mean flow. These regions of significant eddy vorticity forcing are often associated with gaps in the topography, suggesting that the ocean jets are being locally steered by topog-raphy. The eddy forcing may also act to assist in the separation of boundary currents, although the diag-nostics of this study suggest that this contribution is relatively small when compared with the advection of planetary vorticity by the time-mean flow. 1. Text Antarc* Antarctic Southern Ocean Unknown Antarctic Southern Ocean The Antarctic |
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ftciteseerx |
language |
English |
description |
Signatures of eddy variability and vorticity forcing are diagnosed in the atmosphere and ocean from weather center reanalysis and altimetric data broadly covering the same period, 1992–2002. In the atmo-sphere, there are localized regions of eddy variability referred to as storm tracks. At the entrance of the storm track the eddies grow, providing a downgradient heat flux and accelerating the mean flow eastward. At the exit and downstream of the storm track, the eddies decay and instead provide a westward accel-eration. In the ocean, there are similar regions of enhanced eddy variability along the extension of mid-latitude boundary currents and the Antarctic Circumpolar Current. Within these regions of high eddy kinetic energy, there are more localized signals of high Eady growth rate and downgradient eddy heat fluxes. As in the atmosphere, there are localized regions in the Southern Ocean where ocean eddies provide statistically significant vorticity forcing, which acts to accelerate the mean flow eastward, provide torques to shift the jet, or decelerate the mean flow. These regions of significant eddy vorticity forcing are often associated with gaps in the topography, suggesting that the ocean jets are being locally steered by topog-raphy. The eddy forcing may also act to assist in the separation of boundary currents, although the diag-nostics of this study suggest that this contribution is relatively small when compared with the advection of planetary vorticity by the time-mean flow. 1. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Richard G. Williams Chris Wilson Chris W. Hughes |
spellingShingle |
Richard G. Williams Chris Wilson Chris W. Hughes Ocean and Atmosphere Storm Tracks: The Role of Eddy Vorticity Forcing |
author_facet |
Richard G. Williams Chris Wilson Chris W. Hughes |
author_sort |
Richard G. Williams |
title |
Ocean and Atmosphere Storm Tracks: The Role of Eddy Vorticity Forcing |
title_short |
Ocean and Atmosphere Storm Tracks: The Role of Eddy Vorticity Forcing |
title_full |
Ocean and Atmosphere Storm Tracks: The Role of Eddy Vorticity Forcing |
title_fullStr |
Ocean and Atmosphere Storm Tracks: The Role of Eddy Vorticity Forcing |
title_full_unstemmed |
Ocean and Atmosphere Storm Tracks: The Role of Eddy Vorticity Forcing |
title_sort |
ocean and atmosphere storm tracks: the role of eddy vorticity forcing |
publishDate |
2006 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.602.1067 http://atoc.colorado.edu/~jweiss/5060/WilliamsEtAl2007annotated.pdf |
geographic |
Antarctic Southern Ocean The Antarctic |
geographic_facet |
Antarctic Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Southern Ocean |
genre_facet |
Antarc* Antarctic Southern Ocean |
op_source |
http://atoc.colorado.edu/~jweiss/5060/WilliamsEtAl2007annotated.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.602.1067 http://atoc.colorado.edu/~jweiss/5060/WilliamsEtAl2007annotated.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766272207922659328 |