Physics
Scientific paper
Jan 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990jgr....95..201f&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 95, Jan. 1, 1990, p. 201-208.
Physics
13
Atmospheric General Circulation Models, F Region, Magnetosphere-Ionosphere Coupling, Thermosphere, Field Aligned Currents, Ionospheric Drift, Night Sky, Plasma Density, Polar Regions, Zonal Flow (Meteorology)
Scientific paper
Using the NCAR thermosphere general circulation model, a series of controlled experiments is performed to investigate the interactive coupling between ionospheric plasma densities and thermospheric neutral winds. The interaction is accomplished by parameterizing the F layer peak height, h(m)F2, in an empirical ionospheric model in terms of the meridional wind, v(south), and by forcing the h(m)F2 and the v(south) parameters to remain mutually coupled in a dynamical calculation. It was found that mutual coupling between forcing and meridional wind is weak during the daytime when the F layer exhibits a broad vertical structure. At night, when the F2 layer is more localized, the neutral dynamical structure is dependent on whether forcing is significantly above or below the altitude (about 275-300 km) at which ion drag effectively competes with viscosity in the neutral momentum balance.
Forbes Jeffrey M.
Roble Raymond G.
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