Physics
Scientific paper
Jul 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982jgr....87.5169s&link_type=abstract
Journal of Geophysical Research, vol. 87, July 1, 1982, p. 5169-5183.
Physics
70
Atmospheric Models, Auroral Zones, F Region, Ion Temperature, Polar Regions, Daytime, Electric Fields, Electron Energy, Ionospheric Ion Density, Oxygen Ions, Vertical Distribution
Scientific paper
The Schunk and Sojka (1981a, b) high latitude ionospheric model is improved through the inclusion of thermal conduction and diffusion terms in the ion energy equation, permitting the study of daytime, high latitude F layer temperature variations in a region poleward of the auroral oval. It is found that ion temperature variation with solar cycle, season and geomagnetic activity closely follows the neutral atomic oxygen variation, and that meridional electric fields of more than 40 mV/m can cause larger ion temperature changes than those due to solar cycle, seasonal or geomagnetic activity variations. In the presence of meridional electric fields, there is an upward flow of heat from the lower ionosphere that also acts to raise ion temperatures at high altitudes. Zonal electric fields affect ion temperature indirectly, through electron density changes.
Schunk Robert W.
Sojka Jan J.
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