On the Origin of Positive Ionospheric Storms

Details On the Origin of Positive Ionospheric Storms On the Origin of Positive Ionospheric Storms

Jan 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999adspr..24.1485w&link_type=abstract

Advances in Space Research, Volume 24, Issue 11, p. 1485-1489.

Computer Science

10

Scientific paper

During periods of enhanced geomagnetic activity, various disturbances of the neutral and ionized upper atmosphere are observed. Here the origin of positive ionospheric storms is investigated. A storm for which neutral gas density measurements by the AEROS B satellite are available has been selected as an example. Using these density measurements as input into an ionosphere model, it is shown that the composition changes (perturbations of the O/N2 density ratio) are not sufficient to explain the storm effects. Equatorward-directed winds caused by either traveling atmospheric disturbances or changes in the large-scale wind circulation, or both, are a more likely explanation for the observed increase in the ionization density

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