Physics
Scientific paper
Sep 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981jats...38.1803s&link_type=abstract
Journal of the Atmospheric Sciences, vol. 38, Sept. 1981, p. 1803-1840.
Physics
102
Equinoxes, Planetary Waves, Propagation Modes, Rossby Regimes, Solstices, Temperature Distribution, Atmospheric Tides, Background Noise, Inhomogeneity, Temperature Effects, Wind Effects, Wind Profiles
Scientific paper
An investigation is conducted regarding the influence of mean field variations on the realization of planetary normal modes, taking into account the mode response and structure in the presence of simple background nonuniformities. It is found that mean field variations have the combined effect of depressing, shifting, and broadening the characteristic response of Rossby normal modes. While nonuniformities in both the mean wind and temperature fields contribute to the reduction in peak response, the former are primarily responsible for translation and spectral broadening. An investigation is conducted to determine which modes may be realized in actual atmospheric configurations and which may be identified. For both the equinox and solstice configurations, response peaks corresponding to all of the first four modes of wavenumbers 1, 2, and 3 are readily visible above the noise.
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