Computer Science
Scientific paper
Oct 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992adspr..12..257d&link_type=abstract
(The earth's middle and upper atmosphere; Proceedings of the Topical Meeting of the Interdisciplinary Scientific Commission C /M
Computer Science
2
Atmospheric Circulation, Electromagnetic Interference, F 2 Region, Ionospheric Storms, Thermosphere, Auroras, Geomagnetism, Ionosondes, Nitrogen, Oxygen Atoms, Polar Regions
Scientific paper
The ionospheric storm concept developed by the authors related both positive and negative phases of the storm to variations of the thermospheric composition (O/N2 ratio) at F2-layer heights. During the negative phase, this variation is due to Joule heating, whereas for the positive phase, in the scope of the concept, two mechanisms are considered: the increase of (O/N2 ratio) in the circulation pattern, moving from the dayside cusp through polar cap to the nightside thermosphere, and the lifting up of the F2-layer peak due to disturbed meridional winds into the region with weaker recombination. It is shown that the behavior of the f0F2 during the storm might be described using the position (geomagnetic latitude) for each particular moment of the auroral oval and of th dayside cusp as indicators of the activity of two principal mechanisms in described conditions.
Belik L. D.
Danilov Aleksei Dmitrievich
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