Solar-cycle modifications of the effects of thermospheric winds on the height of the F2-layer over Antarctica

Dudeney, J.R. 1976 Solar-cycle modifications of the effects of thermospheric winds on the height of the F2-layer over Antarctica. Journal of Atmospheric and Terrestrial Physics, 38 (3). 291-294. https://doi.org/10.1016/0021-9169(76)90096-9

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Official URL: http://dx.doi.org/10.1016/0021-9169(76)90096-9

Abstract/Summary

Results of analysis of the diurnal variations of hmF2 for Argentine Islands (65°15'S, 64°16'W) and Halley Bay (75°30'S, 26°40'W) are presented. It is shown that, for summer months, the diurnal variations can be approximated by simple sinusoidal functions, the phases of which vary smoothly with solar activity. This behaviour can be explained in terms of the effects of thermospheric winds; it results partly from a change in the relative importance of ‘ion drag’ and Coriolis force, and partly from changes in the chemistry which controls the characteristic time required for the layer to respond to the wind. A comparison of observations and theory suggests that the local solar time at which the thermospheric pressure maximum occurs does not vary with solar activity.

Item Type:	Publication - Article
Digital Object Identifier (DOI):	https://doi.org/10.1016/0021-9169(76)90096-9
ISSN:	00219169
Date made live:	29 Oct 2019 11:59 +0 (UTC)
URI:	https://nora.nerc.ac.uk/id/eprint/525648

Item Type:

Publication - Article

Digital Object Identifier (DOI):

https://doi.org/10.1016/0021-9169(76)90096-9

ISSN:

00219169

Date made live:

29 Oct 2019 11:59 +0 (UTC)

URI:

https://nora.nerc.ac.uk/id/eprint/525648