Effects of vibrationally excited molecular nitrogen on ionospheric-thermospheric coupling for different levels of solar activity

Details Effects of vibrationally excited molecular nitrogen on ionospheric-thermospheric coupling for different levels of solar activity Effects of vibrationally excited molecular nitrogen on ionospheric-thermospheric coupling for different levels of solar activity

Dec 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991jatp...53.1139s&link_type=abstract

(Solar-terrestrial physics; International SCOSTEP Symposium, 7th, The Hague, Netherlands, June 25-30, 1990, Selected Papers. A92

Physics

Molecular Collisions, Molecular Excitation, Molecular Gases, Nitrogen, Solar Terrestrial Interactions, Thermosphere, Vibrational Spectra, Airglow, Earth Ionosphere, Ionospheric Electron Density, Nitrogen Oxides, Solar Activity Effects

Scientific paper

An analysis has been made of the interaction between neutral and ionized thermospheric components and processes of the generation, transfer and dissipation of vibrationally excited nitrogen molecules. Analytical expressions for these interactions with the topside thermosphere have been developed. It has been shown that the collision frequency is a direct measure of the excited components N2,v. Naturally, a complete analysis of N2,v and its effects is possible only when it is rationally combined with airglow measurements. As an example, the saturation effects of N2,v have been considered for different levels of solar activity, in particular the considerable increase of NO(+)/O2(+) during a very active sun and its role in restricting electron density growth rates.

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