Equatorial F-region neutral winds from nightglow OI 630.0 nm Doppler shifts

Details Equatorial F-region neutral winds from nightglow OI 630.0 nm Doppler shifts Equatorial F-region neutral winds from nightglow OI 630.0 nm Doppler shifts

May 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978georl...5..373s&link_type=abstract

Geophysical Research Letters, vol. 5, May 1978, p. 373-376. Research supported by the U.S. Defense Nuclear Agency

Physics

3

Doppler Effect, Equatorial Atmosphere, F Region, Infrared Spectra, Nightglow, Wind Velocity Measurement, Data Processing, Emission Spectra, Fabry-Perot Interferometers, Satellite Orbits

Scientific paper

Tropical thermospheric wind velocities were measured through interferometric assessments of the Doppler shifts in the twilight and nightglow 630.0-nm emission line. The measurements, conducted with a Fabry-Perot interferometer, showed roughly eastward F-region neutral winds at velocities of 50-120 m/sec shortly after sunset; for several hours the velocity of the winds increased moderately, shifting southward and sometimes undergoing decreases at late-night hours. These findings were in agreement with measurements based on satellite orbit changes, but differed from pressure-gradient model predictions and 630.0-nm airglow intensity measurements.

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