Spaced lidar and nightglow observations of an atmospheric sodium enhancement

Details Spaced lidar and nightglow observations of an atmospheric sodium enhancement Spaced lidar and nightglow observations of an atmospheric sodium enhancement

Jul 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980jgr....85.3480c&link_type=abstract

Journal of Geophysical Research, vol. 85, July 1, 1980, p. 3480-3484. Financiadora de Estudos e Projetos

Physics

10

Abundance, Atmospheric Composition, Nightglow, Optical Radar, Sodium, Airglow, Atmospheric Density, Augmentation, Nocturnal Variations, Radar Tracking, Vertical Distribution

Scientific paper

A short-lived factor of 10 increase in the density of atmospheric sodium was observed on the night of August 25-26, 1979 at a height of 95 km. From the time lags between the increases observed at different measuring positions, it is concluded that they were caused by a cloud of high-density sodium moving with a velocity of 200-270 m/s at an azimuth of 200 deg. The sodium must have been meteoric in origin, involving the deposition of at least 10 kg of meteoric material. From the increase in sodium abundance and the increase in Na D airglow intensity observed simultaneously, a value of 3.3 x 10 to the 13th per cu m is obtained for ozone density at 95 km.

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