Airborne study of equatorial 6300 A nightglow

Details Airborne study of equatorial 6300 A nightglow Airborne study of equatorial 6300 A nightglow

Jan 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975jatp...37...65m&link_type=abstract

Journal of Atmospheric and Terrestrial Physics, vol. 37, Jan. 1975, p. 65-74.

Computer Science

Sound

F Region, Ionospheric Sounding, Nightglow, Oxygen Spectra, Airborne Equipment, Atmospheric Models, Error Analysis, Ion Recombination, Light Emission, Time Response, Tropical Regions

Scientific paper

Photometric and ionosonde observations were performed aboard an AFCRL jet aircraft flying between 20 N and 20 S latitude in July 1969. The measurements have been combined in a quantitative test of F-region ionic recombination as the source of nightglow 6300 A. Using the Jacchia (1971) model atmosphere, the effective exospheric temperature required to account for the absolute 6300 A intensity is computed, and it is found that this temperature falls in the expected range, 700 to 900 K, for a total range in 6300 A intensity of 6 to 300 rayleighs. It is concluded that F-region recombination is the only required source; that no significant variation in atmospheric molecular composition existed over the equatorial region studied, and that the only systematic tendency in the effective value for the exospheric temperature was a gradual decrease during the night paralleling the diurnal variation in this temperature inferred from satellite drag studies. The major enhancements of 6300 A in the equatorial Appleton anomaly regions seem fully accounted for by ionic recombination.

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