Twilight enhancement of 5577-A-wavelength airglow

Details Twilight enhancement of 5577-A-wavelength airglow Twilight enhancement of 5577-A-wavelength airglow

Jan 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975jgr....80..154s&link_type=abstract

Journal of Geophysical Research, vol. 80, Jan. 1, 1975, p. 154-160.

Other

2

Airglow, F Region, Ionospheric Composition, Luminous Intensity, Twilight Glow, Electron Density (Concentration), Electron-Ion Recombination, Fabry-Perot Interferometers, Oxygen Ions, Oxygen Spectra, Periodic Variations, Photodissociation

Scientific paper

The measurement of O I airglow intensities in the morning and evening twilights with a Fabry-Perot interferometer has revealed an enhancement with an apparent seasonal variation. The enhancement is found to emanate from the F region of the ionosphere and is well accounted for in terms of the dissociative recombination of O2(+) and F region electrons. It is shown that no other mechanism for the excitation of O(1S) atoms can be expected to give rise to a significant twilight enhancement. In addition, the results of earlier ground-based studies of the twilight green line airglow by other authors are reviewed critically with reference to the present results.

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