Physics
Scientific paper
Jul 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979cajph..57..926c&link_type=abstract
Canadian Journal of Physics, vol. 57, July 1979, p. 926-932. National Research Council of Canada
Physics
Airglow, Ion Emission, Midlatitude Atmosphere, Oxygen Ions, Particle Density (Concentration), Spatial Distribution, Annual Variations, Atmospheric Circulation, Night Sky, Oxygen Atoms, Photometers, Satellite-Borne Instruments, Scanners, Thermosphere
Scientific paper
An analysis of O I 5577 A airglow limbs observed on the night side of the earth by a scanning photometer on board the ISIS 2 satellite has provided sufficient data to establish the existence of a prominent midlatitude maximum in the airglow emission rate. The maximum occurs near 40 deg latitude in the winter and near 30 deg in the summer, with the winter hemisphere maximum a factor of 1.6 larger than the summer hemisphere maximum. The emission rate varies by a factor of about 4 during the year with the maximum occurring several weeks after the autumn equinox. It is suggested that these spatial and temporal variations are due to the distribution of atomic oxygen which, in turn, is influenced by large scale dynamical processes in the lower thermosphere.
Cogger Leroy L.
Khaneja R.
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