Seasonal variations in the equatorial thermospheric wind measured at Arequipa, Peru

Details Seasonal variations in the equatorial thermospheric wind measured at Arequipa, Peru Seasonal variations in the equatorial thermospheric wind measured at Arequipa, Peru

Aug 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990jgr....9512243b&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 95, Aug. 1, 1990, p. 12243-12250.

Physics

21

Annual Variations, Equatorial Atmosphere, Thermosphere, Wind Measurement, Wind Variations, Emission Spectra, Fabry-Perot Interferometers, Meridional Flow, Nightglow, Temporal Distribution, Wind Profiles

Scientific paper

The present study of seasonal thermospheric wind variations at Arequipa, Peru, conducted in moderate solar flux levels and low geomagnetic activity from March to August in 1983 and April to October in 1988, has yielded monthly-average meridional winds that are nearly zero and perhaps fluctuating in direction during the night, but then developing a southward flow at 50-100 m/sec in the early and late night from May onward. A comparison of the present results with earlier satellite measurements indicates generally good agreement at the equinox and the June solstice, except in June, 1988. A comparison is made with wind patterns over the same two periods at Arecibo, Puerto Rico.

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