A self-consistent model of the most common nightglow emissions

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Earth Atmosphere, Nightglow, Oxygen Spectra, Self Consistent Fields, Energy Levels, Excitation, Line Spectra, Rayleigh Scattering, Spectrum Analysis

Scientific paper

A model for the nightglow emissions, applying an empirical approach, is presented. A Barth mechanism is assumed for the excitation of O(1S) and a similar mechanism, with O2 as the transfer agent, is used for the production of O2 (b to the 1st power Sigma plus sub g). In these cases laboratory rates are used for the quenching of the emitting states by atmospheric constituents. Empirical coefficients are derived for the production and loss of the precursor states. A rigorous test of the model is provided by rocket observations made under different geophysical conditions. In these flights the atomic oxygen green line intensity varied from 30 to 400 Rayleighs. The model is used to derive an atomic oxygen profile by inversion of the (0-0) atmospheric band measurement. The expected height profiles of the other emissions is calculated. The agreement with observation is satisfactory.

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