Physics
Scientific paper
Dec 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987jgr....9213635c&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 92, Dec. 1, 1987, p. 13635-13640.
Physics
10
Dayglow, Nitrogen Oxides, Rayleigh Number, Solar Cycles, Solar Flux, Ultraviolet Spectra, Auroral Spectroscopy, Earth Ionosphere, Electron Transitions
Scientific paper
Observations of the N II 2143 Å emission in the Earth's dayglow were obtained by a rocket-borne spectrograph flown on November 9, 1981 and August 11, 1982. The ultraviolet spectra were analyzed using synthetic spectra to separate the contribution of the 2143 Å emission from the overlapping nitric oxide gamma band. The 2143 Å column emission rate profiles for both flights were quite similar with peak column emission intensities of approximately 500 Rayleighs at an altitude of 160 km. When the observed column emission rate profiles are compared with theoretical calculations, the production efficiency of this emission was found to be 0.10±0.04. The 2143 Å emission varies by more than a factor of 3 over the solar cycle and therefore should be useful as an indicator of the solar EUV flux.
Barth Charles A.
Cleary Daniel
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