Optical observations of thermospheric neutral winds at Arecibo between 1980 and 1987

Details Optical observations of thermospheric neutral winds at Arecibo between 1980 and 1987 Optical observations of thermospheric neutral winds at Arecibo between 1980 and 1987

Mar 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989jgr....94.2711b&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 94, March 1, 1989, p. 2711-2716.

Physics

39

Airglow, Solar Terrestrial Interactions, Solar Wind, Thermosphere, Wind Profiles, F Region, Fabry-Perot Interferometers, Meridional Flow, Night Sky, Puerto Rico, Zonal Flow (Meteorology)

Scientific paper

Observations of the nighttime thermospheric winds obtained with a Fabry-Perot interferometer at Arecibo are presented for the period 1980-1987. High-resolution spectra of the O(1D) airglow emission at 630 nm are obtained and the neutral wind field is inferred. Well-defined seasonal and nocturnal variations of both the zonal and meridional components of the thermospheric wind field are observed. In each year, eastward flow was observed in the evening hours with an average peak velocity of about 100 m/s near 2200 AST. It is concluded that the nocturnal and seasonal variations in the neutral wind field are unaffected by changes in the solar cycle.

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