Physics
Scientific paper
Jul 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980jgr....85.3401f&link_type=abstract
Journal of Geophysical Research, vol. 85, July 1, 1980, p. 3401-3406.
Physics
1
Atmospheric Composition, Atmospheric Tides, Diurnal Variations, Gaseous Diffusion, Nitrogen, Oxygen, Thermosphere, Atmospheric Temperature, Binary Mixtures, Gas Mixtures, Gravitational Waves, Incoherent Scattering, Mathematical Models, Mesosphere, Propagation Modes, Three Dimensional Models
Scientific paper
The paper examines the effects of mutual diffusion between O and N2 for diurnal and semidiurnal tidal oscillations in the thermosphere. A binary gas extension of a previous f plane equivalent gravity wave formalism was developed and used to study this effect; compared with calculations that omit O-N2 mutual diffusion, diffusive interaction affects the temperature and horizontal velocities associated with the diurnal thermospheric tide excited in situ, and the (2,2) and (2.4) modes propagating from the mesosphere. These results affect the interpretation of incoherent scatter measurements of thermospheric tides and the construction of synthesized tidal models calibrated by the measurements; they suggest that the inequality of the vertical transport velocities of O and N2 be accounted for in three-dimensional numerical models of semidiurnal thermospheric tides.
Forbes Jeffrey M.
Hagan Maura E.
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