6300-A airglow meridional intensity gradients

Details 6300-A airglow meridional intensity gradients 6300-A airglow meridional intensity gradients

Aug 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980jgr....85.4191h&link_type=abstract

Journal of Geophysical Research, vol. 85, Aug. 1, 1980, p. 4191-4204.

Physics

5

Atmospheric Ionization, F Region, Ionospheric Disturbances, Magnetic Storms, Nightglow, Magnetic Effects, Nocturnal Variations, Oxygen Afterglow, Pressure Effects, Winds Aloft

Scientific paper

Observations of meridional intensity gradients in the 6300-A airglow are presented and the origin of the events is discussed. The dynamics of the local F region are reviewed, with particular attention given to the effect of neutral winds on airglow intensity. Results of tilting filter photometer observations of the 6300-A airglow at Arecibo during the spring and summer are then presented, and nights with meridional gradients greater than 0.1 R/km are noted to occur only during periods of considerable magnetic activity and to move from east to west with the antisolar meridian. The passage of the midnight pressure bulge formed by the thermal tides of the equatorial lower atmosphere is shown to account for the general shape of the airglow intensity source, and the storm-enhanced winds from the north produced by auroral zone heating are invoked to account for the unusually sharp intensity gradient.

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