Physics
Scientific paper
Apr 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979jgr....84.1241s&link_type=abstract
Journal of Geophysical Research, vol. 84, Apr. 1, 1979, p. 1241-1252. Research supported by the Aerospace Corporate Programs fo
Physics
Annual Variations, Diurnal Variations, Oxygen Atoms, Synoptic Measurement, Thermosphere, Wind Effects, Atmospheric Composition, Atmospheric Models, Dynamic Models, Gas Composition, Molecular Collisions, Nitrogen, Three Dimensional Models
Scientific paper
Results are presented of calculations pertaining to the effects of global-scale dynamical processes on the coupled seasonal and diurnal variations of atomic oxygen in the altitude range 90-500 km. The calculations are based on a three-dimensional numerical model of thermospheric dynamics which treats the three gases N2, O2, and O simultaneously, coupled together by collisional processes. The model is described, and the results of the calculations under both equinox and solstice conditions and a comparison with observational data are discussed. It is shown that none of these gases can be considered to be in hydrostatic equilibrium below about 200 km, and that global-scale winds cause the observed winter enhancement of atomic oxygen.
Christopher L. A.
Straus J. M.
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