Physics
Scientific paper
Oct 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981jgr....86.9654s&link_type=abstract
(International Symposium on Middle Atmosphere Dynamics and Transport, University of Illinois, Urbana, IL, July 28-Aug. 1, 1980.)
Physics
91
Atmospheric Circulation, Atmospheric Temperature, Middle Atmosphere, Planetary Waves, Wave Propagation, Wind Profiles, Atmospheric Models, Mesosphere, Propagation Modes, Stratosphere, Temperature Distribution
Scientific paper
A number of observational reports point to the recurrent appearance of a global-scale, 2-day oscillation at stratospheric and mesospheric heights. The existing documentation of the 2-day wave is examined, and a summary is provided of the effects of typical mean field variations on rotational normal modes. It is found that the temporal and spatial character of the third Rossby-gravity normal mode are in reasonably good correspondence with the observed features of the 2-day wave. Characteristics of the mode derived in realistic numerical simulation, qualitatively model the period of near 2.1 days, the westward propagating, wave 3 structure, as well as the latitudinal and vertical behavior, peculiar to the upper stratosphere and mesosphere.
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