Physics
Scientific paper
May 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988jgr....93.4077h&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 93, May 1, 1988, p. 4077-4088.
Physics
34
Coriolis Effect, Eddy Viscosity, Gravity Waves, Hydroxyl Emission, Nightglow, Thermal Conductivity, Earth Rotation, Mesosphere
Scientific paper
The chemical-dynamical model of Walterscheid et al. (1987), which describes wave-driven fluctuations in OH nightglow, was modified to include the effects of both eddy thermal conduction and viscosity, as well as the Coriolis force (with the shallow atmosphere approximation). Using the new model, calculations were performed for the same nominal case as used by Walterscheid et al. but with only wave periods considered. For this case, the Coriolis force was found to be unimportant at any wave period. For wave periods greater than 2 or 3 hours, the inclusion of thermal conduction alone greatly modified the results (in terms of a complex ratio 'eta' which expresses the relationship between the intensity oscillation about the time-averaged intensity and the temperature oscillation about the time-averaged temperature); this effect was reduced with the further inclusion of the eddy viscosity.
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