Horizontal Wind Systems in the Ionospheric E Region Deduced from the Dynamo Theory of the Geomagnetic Sq Variation Part III

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Abstract
In Parts I and II ionospheric wind systems have been deduced from the geomagnetic Sq variations for the mean solstice. In order to compare our results with observation, however, it is still necessary to obtain the wind systems for the solstitial seasons. In this paper wind systems in summer and winter hemispheres are deduced from the Sq data. It is shown that the diurnal wind component has greater magnitude in summer than in winter; whereas the semi-diurnal component has smaller magnitude in summer than in winter over most of the hemisphere, and that in summer hemisphere the diurnal wind component is greater than the semi-diurnal one; whereas in winter hemisphere the former is more or less smaller than the latter. A comparison between our results and observed ionospheric winds is made.

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