Computer Science
Scientific paper
Feb 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990p%26ss...38..301m&link_type=abstract
Planetary and Space Science (ISSN 0032-0633), vol. 38, Feb. 1990, p. 301-309.
Computer Science
9
Atmospheric Circulation, Atmospheric Tides, Diurnal Variations, Dynamo Theory, Thermosphere, Electric Fields, Electron Density (Concentration), F Region, Ionospheric Drift, Particle Acceleration, Zonal Flow (Meteorology)
Scientific paper
A theoretical multiconstituent model (including O, N2, and O2) which describes the interactions between neutral winds, dynamo electric fields, and ion drifts is used to interpret observations that revealed a dominance of the fundamental diurnal tide in the upper thermosphere and at equatorial latitudes, and its effect on the thermospheric circulation. The model is shown to reproduce reasonably well the magnitudes of the neutral winds, ion drift velocities, and the ratio between the two. A solution for the neutral winds in which the dynamo electric field is forced to zero shows that the dynamo-induced ion drift is very important in accelerating the neutral atmosphere at higher altitudes. The dynamo interaction primarily affects the curl component of the field; its effect on the temperature and density perturbations is small.
Harris Isadore
Herrero Federico A.
Mayr Hans G.
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