The turbulent oscillator : a mechanism of low-frequency variability of the wind-driven ocean gyres
The turbulent oscillator : a mechanism of low-frequency variability of the wind-driven ocean gyres
Date
2007-09
Authors
Berloff, Pavel S.
Hogg, Andrew Mc C.
Dewar, William K.
Hogg, Andrew Mc C.
Dewar, William K.
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DOI
10.1175/jpo3118.1
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Keywords
Turbulence
Gyres
Transport
Potential vorticity
Mesoscale processes
Gyres
Transport
Potential vorticity
Mesoscale processes
Abstract
Intrinsic low-frequency variability is studied in the idealized, quasigeostrophic, midlatitude, wind-driven ocean gyres operating at large Reynolds number. A robust decadal variability mode driven by the transient mesoscale eddies is found and analyzed. The variability is a turbulent phenomenon, which is driven by the competition between the eddy rectification process and the potential vorticity anomalies induced by changes of the intergyre transport
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Author Posting. © American Meteorological Society, 2007. This article is posted here by permission of American Meteorological Society for personal use, not for redistribution. The definitive version was published in Journal of Physical Oceanography. 37 (2007): 2363-2386, doi:10.1175/jpo3118.1.
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Journal of Physical Oceanography 37 (2007): 2363-2386