Tidal winds from the mesosphere, lower thermosphere global radar network during the second LTCS campaign - December 1988

Details Tidal winds from the mesosphere, lower thermosphere global radar network during the second LTCS campaign - December 1988 Tidal winds from the mesosphere, lower thermosphere global radar network during the second LTCS campaign - December 1988

Feb 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991jgr....96.1117m&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 96, Feb. 1, 1991, p. 1117-1127. Research supported by NSERC, Atmospheric

Physics

26

Atmospheric Tides, Mesosphere, Radar Networks, Thermosphere, Wind Profiles, Atmospheric Models, Climatology, Radar Data, Radar Scattering

Scientific paper

Winds and tides were measured by nine MLT (mesosphere, lower thermosphere) radars with locations between 70 deg N and 78 deg S, including an equatorial station at Christmas Island, 2 deg N (Avery et al., 1990). The mean winds were eastward (westward) in the Northern (Southern) Hemisphere mesosphere, consistent with midwinter circulations. For the 12-hour tide, observations and the model of Forbes and Vial (1989) were in generally good agreement: in both cases northward components were closer to being in phase in the two hemispheres, and winter wavelengths were shorter than those of the midlatitude summer. Major differences were large (small) amplitudes at 70 deg N for model (observations); and poor agreement of equatorial tidal profiles. For the 24-hour, the radar observations and model of Forbes and Hagan (1988) were in useful agreement in the summer hemisphere.

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