Long extra-tropical planetary wave propagation in the presence of slowly varying mean flow and bottom topography. II: ray propagation and comparison with observations
Long extra-tropical planetary wave propagation in the presence of slowly varying mean flow and bottom topography. II: ray propagation and comparison with observations
Ray theory is used to predict phase and group velocities for long planetary waves under realistic, albeit slowly varying, oceanic conditions. The results are compared with local theory using fields smoothed to the same amount (9° latitude/longitude) as well as those with much less smoothing (1°). The agreement is excellent, showing that local theory forms a good proxy for ray theory results. The predicted speeds agree well with observations of planetary waves deduced from sea surface height data. The theory uses purely baroclinic mean flow; the inclusion of barotropic flow has little effect except at high latitudes.
802-821
Killworth, Peter D.
cdb4e8d3-c5eb-48b8-860a-0b16473b5d44
Blundell, Jeffrey R.
88114f32-6b76-46b2-b2d8-d6ef64a82b0d
2003
Killworth, Peter D.
cdb4e8d3-c5eb-48b8-860a-0b16473b5d44
Blundell, Jeffrey R.
88114f32-6b76-46b2-b2d8-d6ef64a82b0d
Killworth, Peter D. and Blundell, Jeffrey R.
(2003)
Long extra-tropical planetary wave propagation in the presence of slowly varying mean flow and bottom topography. II: ray propagation and comparison with observations.
Journal of Physical Oceanography, 33 (4), .
(doi:10.1175/1520-0485(2003)33<802:LEPWPI>2.0.CO;2).
Abstract
Ray theory is used to predict phase and group velocities for long planetary waves under realistic, albeit slowly varying, oceanic conditions. The results are compared with local theory using fields smoothed to the same amount (9° latitude/longitude) as well as those with much less smoothing (1°). The agreement is excellent, showing that local theory forms a good proxy for ray theory results. The predicted speeds agree well with observations of planetary waves deduced from sea surface height data. The theory uses purely baroclinic mean flow; the inclusion of barotropic flow has little effect except at high latitudes.
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Published date: 2003
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Local EPrints ID: 11231
URI: http://eprints.soton.ac.uk/id/eprint/11231
ISSN: 0022-3670
PURE UUID: de5e96f4-1a3b-4719-8253-833bae8a72a3
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Date deposited: 04 Nov 2004
Last modified: 15 Mar 2024 05:03
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Author:
Peter D. Killworth
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