Miller, A. J., D. J. Neilson, D. S. Luther, M. C. Hendershott,
B. D. Cornuelle, P. F. Worcester, M. A. Dzieciuch, B. D. Dushaw,
B. M. Howe, J. C. Levin, H. G. Arango and D. B. Haidvogel, 2007:
Barotropic Rossby wave radiation from a model Gulf Stream.
Geophysical Research Letters, 34,
L23613, doi:10.1029/2007GL031937.
Abstract.
The barotropic Rossby wave field in the North Atlantic Ocean
is studied in an eddy-resolving ocean model simulation. The
meandering model Gulf Stream radiates barotropic Rossby waves southward through preferred
corridors defined by topographic features. The smoother region between
the Bermuda Rise and the mid-Atlantic Ridge is a
particularly striking corridor of barotopic wave radiation in the 20-50 day
period band. Barotropic Rossby waves are also preferentially excited
at higher frequencies over the Bermuda Rise, suggesting resonant excitation of
topographic Rossby normal modes. The prevalence of these radiated waves
suggests that they may be an important energy sink for the equilbrium state of the Gulf Stream.
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