Atmospheric gravity wave effect on the airglow O (0,1) and OH (9,4) band intensity and temperature variations observed from a low latitude station

Details Atmospheric gravity wave effect on the airglow O (0,1) and OH (9,4) band intensity and temperature variations observed from a low latitude station Atmospheric gravity wave effect on the airglow O (0,1) and OH (9,4) band intensity and temperature variations observed from a low latitude station

Oct 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992adspr..12..131t&link_type=abstract

(The earth's middle and upper atmosphere; Proceedings of the Topical Meeting of the Interdisciplinary Scientific Commission C /M

Physics

7

Airglow, Atmospheric Models, Emission Spectra, Gravity Waves, Hydroxyl Radicals, Mesopause, Oxygen, Spectral Bands, Wave Propagation

Scientific paper

Simultaneous measurements of the night airglow O2 atmospheric (0,1) band (864.5 nm) and OH (9,4) band (774.6 nm) emissions have been carried out at Cachoeira Paulista (22.7 deg S, 45.0 deg W) since 1983. This paper presents a study of gravity wave induced variations in the emission intensities and rotational temperatures. For both the emissions, the intensity variations are normally delayed with respect to the temperature variations, and the phase difference is larger for OH(9,4) than for O2(0,1). The ratio eta between the amplitudes of fluctuation of the intensity and temperature has been calculated for both the emissions. The mean value of eta for OH(9,4) was 4.9 with a range of 1.03 to 7.9, in agreement with a recent model. For the O2A(0,1) band, eta varied from 3.4 to 16.1, with a mean of 7.1. The relation between eta and the fluctuation period is also different for the two emissions.

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