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Zonal mean winds in the equatorial mesosphere and lower thermosphere observed by the High Resolution Doppler ImagerThis paper presents analyses of mesospheric and lower thermospheric zonal mean winds observed by the High Resolution Doppler Imager (HRDI) on the Upper Atmosphere Research Satellite (UARS). Monthly averages of the equatorial zonal mean zonal winds are presented for January 1992 through June 1993. Equatorial zonal winds in the 70-90 km region are dominated by a semiannual oscillation (SAO), ranging from 30 m/s (westerly) to -100 m/s (easterly). At high latitudes the zonal wind variations are predominantly annual. Above 90 km, the low-latitude flow is easterly at all times, punctuated by a small semiannual variation. This behavior may be related to the deposition of momentum by the diurnal tides.
Document ID
19950047210
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Lieberman, R. S.
(Univ. of Michigan, Ann Arbor, MI United States)
Burrage, M. D.
(Univ. of Michigan, Ann Arbor, MI United States)
Gell, D. A.
(Univ. of Michigan, Ann Arbor, MI United States)
Hays, P. B.
(Univ. of Michigan, Ann Arbor, MI United States)
Marshall, A. R.
(Univ. of Michigan, Ann Arbor, MI United States)
Orthland, D. A.
(Univ. of Michigan, Ann Arbor, MI United States)
Skinner, W. R.
(Univ. of Michigan, Ann Arbor, MI United States)
Wu, D. L.
(Univ. of Michigan, Ann Arbor, MI United States)
Vincent, R. A.
(Univ. of Adelaide Adelaide, Australia)
Franke, S. J.
(Univ. of Illinois, Urbana, IL United States)
Date Acquired
August 16, 2013
Publication Date
December 23, 1993
Publication Information
Publication: Geophysical Research Letters
Volume: 20
Issue: 24
ISSN: 0094-8276
Subject Category
Geophysics
Accession Number
95A78809
Funding Number(s)
CONTRACT_GRANT: NAS5-27751
Distribution Limits
Public
Copyright
Other

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