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Finite-amplitude behavior of a single baroclinic wave with multiple vertical modes - Effects of thermal dampingA quasi-geostrophic, beta-plane model possessing high vertical resolution is used to investigate the effects of thermal damping on the finite amplitude behavior of a baroclinic wave; both the wave field and zonal-mean flow of the model are, however, truncated to a single horizontal mode, so that the wave-mean flow interaction is purely baroclinic. For sufficiently strong thermal damping steady wave flows are obtained, while for weaker damping, nonsteady vacillating behavior is found. In the steady wave flows, the mean flow is linearly neutral. An especially interesting vacillation, characterized by two widely separated time scales, occurs in the model nonsteady regime and appears to be similar in some respects to behavior found in the two-layer model with only lower layer dissipation.
Document ID
19860040292
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Barnes, J. R.
(Oregon State University Corvallis, United States)
Date Acquired
August 12, 2013
Publication Date
January 1, 1986
Publication Information
Publication: Journal of the Atmospheric Sciences
Volume: 43
ISSN: 0022-4928
Subject Category
Meteorology And Climatology
Accession Number
86A25030
Funding Number(s)
CONTRACT_GRANT: NSG-7085
Distribution Limits
Public
Copyright
Other

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