Physics
Scientific paper
Mar 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982jgr....87.1599r&link_type=abstract
Journal of Geophysical Research, vol. 87, Mar. 1, 1982, p. 1599-1614.
Physics
191
Atmospheric Circulation, Atmospheric Temperature, Convective Flow, Magnetospheric Instability, Plasma Dynamics, Solar Terrestrial Interactions, Thermosphere, Arctic Regions, Atmospheric Heating, Atmospheric Models, Equinoxes, Solar Heating
Scientific paper
The thermospheric general circulation model of the NCAR is used in an examination of the effect of magnetospheric convection in modifying the diurnal neutral gas temperature distribution and circulation of the thermosphere during equinox conditions. Differences in temperature structure and circulation are illustrated by numerical experiments for the cases due to solar heating, solar heating plus plasma convection with coincident geographic and geomagnetic poles, and solar heating plus plasma convection with displaced poles. It is determined that high-latitude plasma convection plays an important role in global thermospheric structure and circulation, and, in the case of displaced poles, introduces a universal time dependence to the circulation and temperature structure; where similar patterns appear in the Northern and Southern Hemispheres with a 12-hour difference.
Dickinson Robert E.
Ridley E. C.
Roble Raymond G.
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