Physics
Scientific paper
Aug 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985jgr....90.7525s&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 90, Aug. 1, 1985, p. 7525-7532.
Physics
6
Annual Variations, Diurnal Variations, F Region, Ionospheric Electron Density, Polar Regions, Solar Activity Effects, Atmospheric Models, Incoherent Scatter Radar, Solar Cycles, Solar Terrestrial Interactions
Scientific paper
It is pointed out that during the last solar maximum period several observations of anomalously high F region peak altitudes (hmF2) have been made by high latitude incoherent scatter radars. In the present investigation, a high latitude time-dependent F region model (HLTD) was used to study a range of differing plasma transport processes in order to identify possible source mechanisms for the anomalously high hmF2's. A description of model parameters is presented, and region density profiles are discussed. Attention is given to the solar maximum, the solar minimum, and the asymmetric wind. The results of the HLTD model study of transport effects for a wide range of solar cycle, season, magnetic activity, and neutral wind conditions show that high hmF2 values in the polar cap can be generated without the need for auroral particle precipitation.
Schunk Robert W.
Sojka Jan J.
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