A Nonlinear Baroclinic Wave-Mean Oscillation with Multiple Normal Mode Instabilities Public Deposited

http://ir.library.oregonstate.edu/concern/defaults/9s161b932

Descriptions

Attribute NameValues
Creator
Abstract or Summary
  • An unstable, nonlinear baroclinic wave-mean oscillation is found in a strongly supercritical quasigeostrophic f-plane numerical channel model with 3840 Fourier components. The growth of linear disturbances to this time-periodic oscillation is analyzed by computing time-dependent normal modes (Floquet vectors). Two different Newton–Picard methods are used to compute the unstable solution, the first based on direct computation of a large set of Floquet vectors, and the second based on an efficient iterative solver. Three different growing normal modes are found, which modify the wave structure of the wave-mean oscillation in two essentially different ways. The dynamics of the instabilities are qualitatively similar to the baroclinic dynamics of the wave-mean oscillation. The results provide an example of time-dependent normal mode instability of a strongly nonlinear time-dependent baroclinic flow.
Resource Type
DOI
Date Available
Date Issued
Citation
  • Samelson, R. M., C. L. Wolfe, 2003: A Nonlinear Baroclinic Wave-Mean Oscillation with Multiple Normal Mode Instabilities. Journal of the Atmospheric Sciences, 60(9), 1186–1199.
Rights Statement
Funding Statement (additional comments about funding)
Publisher
Peer Reviewed
Replaces
Additional Information
  • description.provenance : Approved for entry into archive by Sue Kunda(sue.kunda@oregonstate.edu) on 2011-12-30T17:10:49Z (GMT) No. of bitstreams: 1 SamelsonRM.CEOAS.NonlinearBaroclinicWave.pdf: 3278050 bytes, checksum: ce9cf5e34fafe1d4fead93d4bdca9b49 (MD5)
  • Journal of the Atmospheric Sciences
  • description.provenance : Made available in DSpace on 2011-12-30T17:10:49Z (GMT). No. of bitstreams: 1 SamelsonRM.CEOAS.NonlinearBaroclinicWave.pdf: 3278050 bytes, checksum: ce9cf5e34fafe1d4fead93d4bdca9b49 (MD5) Previous issue date: 2003-05
  • description.provenance : Submitted by Deborah Campbell (deborah.campbell@oregonstate.edu) on 2011-12-08T16:59:30Z No. of bitstreams: 1 SamelsonRM.CEOAS.NonlinearBaroclinicWave.pdf: 3278050 bytes, checksum: ce9cf5e34fafe1d4fead93d4bdca9b49 (MD5)
  • Vol. 60 no. 9

Relationships

Parents:

This work has no parents.

Last modified

Downloadable Content

Download PDF

Items