Physics
Scientific paper
Mar 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990jatp...52..223b&link_type=abstract
Journal of Atmospheric and Terrestrial Physics (ISSN 0021-9169), vol. 52, March 1990, p. 223-240.
Physics
36
F 2 Region, Meridional Flow, Midlatitude Atmosphere, Solar Cycles, Annual Variations, Anomalies, Geomagnetic Latitude, Ion Concentration, Molecular Ions, Solar Activity
Scientific paper
The servo model of Rishbeth et al. (1978) and the neutral wind model of Hedian et al. (1988) are used to calculate the peak height of the F2 layer. The results are compared with observed values derived from ionosonde measurements at two midlatitude stations. The two values generally agree. Anomalies were identified that were explained by a larger nighttime equatorward neutral wind at solar minimum and the presence of molecular ions at the F2 peak in summer at the solar minimum and during the solar cycle peak of magnetic activity. It is found that the derived winds are poleward in summer during periods when the peak height of the F2 layer may be significantly lower than the peak in O(+) due to the presence of molecular ions.
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