Observations of O2(1Sigma) and OH nightglow during the ALOHA-90 campaign

Details Observations of O2(1Sigma) and OH nightglow during the ALOHA-90 campaign Observations of O2(1Sigma) and OH nightglow during the ALOHA-90 campaign

Jul 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991georl..18.1357y&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 18, July 1991, p. 1357-1360.

Physics

5

Airborne Equipment, Aloha System, Hydroxyl Radicals, Michelson Interferometers, Nightglow, Atmospheric Composition, Brightness, Emission Spectra, Oxygen, Spectral Bands

Scientific paper

Two spectroscopic instruments, a 1/4-meter Ebert-Fastie spectrometer and a Michelson interferometer, were flown aboard the NCAR Electra during the ALOHA-90 campaign. These instruments were designed to carry out measurements of the brightnesses and rotational temperatures of the O2 atmospheric (0-1) band and several OH Meinel bands simultaneously with sodium lidar observations. The spectrometer results taken during the nights of March 25 and March 31 are reported. Wave-like oscillations in both O2 and OH airglow brightnesses were clearly present during both flights and a strong positive correlation of OH band brightness with sodium column density was found. A slightly weaker correlation of O2 band brightness with sodium column density was also detected. The measured brightness ratio between the OH (7-4) and (7-3) bands is found to be 11.2 + or - 0.3, which is in good agreement with the calculated ratios of 12.8 by Mies (1974) and 10.2 by Langhoff et al. (1986).

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