Combined optical and radar wind measurements in the F region over Millstone Hill

Details Combined optical and radar wind measurements in the F region over Millstone Hill Combined optical and radar wind measurements in the F region over Millstone Hill

Dec 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991jgr....9621255s&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 96, Dec. 1, 1991, p. 21,255-21,262.

Physics

30

F Region, Optical Measurement, Particle Collisions, Radar Tracking, Wind Measurement, Fabry-Perot Interferometers, Incoherent Scatter Radar, Nocturnal Variations, Oxygen Atoms, Oxygen Ions

Scientific paper

A Fabry-Perot interferometer has been gathering F region wind data at Millstone Hill routinely since mid-1988. A total of 27 nights of optical data have been collected with simultaneous incoherent scatter radar data. Data for 22 nights (of which 10 were geomagnetically quiet and 12 were unsettled) have been used to evaluate the O(+)-O collision frequency. The present data show that the collision frequency based on adjusted theoretical value of Dalgamo (1964) that was used at Millstone Hill Observatory before 1988 should be increased by a factor of 1.9 +/- 0.15.

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