Physics
Scientific paper
Apr 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995adspr..15...47y&link_type=abstract
Advances in Space Research (ISSN 0273-1177), vol. 15, no. 4, p. (4)47-(4)50
Physics
2
Collision Parameters, Earth Atmosphere, Gravity Waves, Homosphere, Planetary Atmospheres, Turbulence, Coriolis Effect, Density (Number/Volume), Turbulent Diffusion
Scientific paper
Wavebreaking turbulence induced by internal gravity waves which exist commonly in the planetary atmospheres plays an essentially important role in generation and maintenance of the homospheres. It is assumed from observations on the Earth that the scale height of vertical distribution of the vertical wavenumber is 34/7 times as large as the density scale height H, and that the intrinsic frequency is given by three times the magnitude of an effective Coriolis parameter (absolute value of f). Then the number density at the homopause level is expressed by a universal function of a non-dimensional parameter bH/(absolute value of f), where b is the collision parameter. Observed values of bH/(absolute value of f) for many planets are rather similar, and the homopause levels are controlled at number densities approximately equal to 1018 +/- 1/cu m on those planets.
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