Polar cap Sporadic-E: part 2, modeling

A model of polar cap Sporadic-E is presented which incorporates several novel features, including the results of recent laboratory studies on metallic ion recombination. The initial Sporadic-E is assumed to be produced by gravity waves interacting with metallic and ambient NO + and O 2 + ions. This...

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Bibliographic Details
Published in:Journal of atmospheric and solar-terrestrial physics 2000, Vol.62 (13), p.1169-1176
Main Authors: MacDougall, J.W., Plane, J.M.C., Jayachandran, P.T.
Format: Article
Language:English
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Summary:A model of polar cap Sporadic-E is presented which incorporates several novel features, including the results of recent laboratory studies on metallic ion recombination. The initial Sporadic-E is assumed to be produced by gravity waves interacting with metallic and ambient NO + and O 2 + ions. This produces transient ionization enhancements in the E region. In the winter night, these enhancements undergo dissociative recombination with electrons and disappear, but in summer reionization of the metallic atoms by charge exchange with ambient E region ions can maintain Sporadic-E as thin intense layers at an altitude of about 100 km for many hours.
ISSN:1364-6826
1879-1824
DOI:10.1016/S1364-6826(00)00092-4