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Equatorial thermospheric wind changes during the solar cycle - Measurements at Arequipa, Peru, from 1983 to 1990Near-equatorial thermospheric wind velocities at Arequipa, Peru, are determined over about two-thirds of a solar cycle using Fabry-Perot interferometer measurements of Doppler shifts in the nightglow 630-nm emission line. Mean monthly nocturnal variations in the meridional and zonal wind components are calculated from the nightly data to remove short-term (day-to-day) variability as well as any additional changes introduced by the progression of the solar cycle. For most of the years, at the winter solstice, there is a weak (more than 100 m/s) transequatorial flow from the summer to the winter hemisphere in the early and the late night, with essentially zero velocities in between. At the equinoxes, an early-night poleward (southward) flow at solar minimum (1986) is replaced by an equatorward (northward) flow at solar maximum (1989-1990).
Document ID
19910067374
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Biondi, M. A.
(Pittsburgh, University PA, United States)
Meriwether, J. W., Jr.
(USAF, Phillips Laboratory, Hanscom AFB MA, United States)
Fejer, B. G.
(Pittsburgh Univ. Pittsburgh, PA, United States)
Gonzalez, S. A.
(Utah State University Logan, United States)
Hallenbeck, D. C.
(NASA Laser Satellite Tracking Station Arequipa, Peru)
Date Acquired
August 14, 2013
Publication Date
September 1, 1991
Publication Information
Publication: Journal of Geophysical Research
Volume: 96
ISSN: 0148-0227
Subject Category
Geophysics
Accession Number
91A51997
Funding Number(s)
CONTRACT_GRANT: NSF ATM-89-08001
CONTRACT_GRANT: NSF ATM-88-00464
CONTRACT_GRANT: NSF ATM-89-23018
CONTRACT_GRANT: NSF ATM-87-40490
CONTRACT_GRANT: NSF ATM-85-02396
Distribution Limits
Public
Copyright
Other

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