Physics
Scientific paper
Nov 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978jatp...40.1137b&link_type=abstract
Journal of Atmospheric and Terrestrial Physics, vol. 40, Oct.-Nov. 1978, p. 1137-1142. Research supported by the Deutsche Forsc
Physics
4
Atmospheric Diffusion, Atmospheric Models, Diffusion Coefficient, Ionospheric Composition, Thermosphere, Turbopause, Turbulent Diffusion, Annual Variations, Atmospheric Density, Atmospheric Temperature, Esro 4 Satellite, Exosphere, Mass Spectroscopy, Mesosphere
Scientific paper
Long-period density variations of the thermospheric constituents can be described by combined variations of two parameters: exospheric temperature and turbopause height. Two global models of thermospheric composition relying on exospheric temperature and turbopause height variations were presented by the authors in a previous paper. In this paper the turbopause height changes and their interpretation in terms of the eddy diffusion coefficient are discussed. The determination of the eddy diffusion coefficient is not unique as some assumptions have to be made with respect to the shape of the height profile of the eddy diffusion coefficient. Two models are presented: one for a height independent and one for a height dependent profile of the eddy diffusion coefficient. The models are discussed and compared with other results.
Blum Peter W.
Schuchardt G. H. K.
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