Mathematics – Logic
Scientific paper
May 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987jatp...49..461t&link_type=abstract
Journal of Atmospheric and Terrestrial Physics (ISSN 0021-9169), vol. 49, May 1987, p. 461-466. MOESC-supported research.
Mathematics
Logic
22
Atmospheric Temperature, Meteorological Radar, Radio Meteorology, Remote Sensing, Wind Measurement, Zonal Flow (Meteorology), Air Land Interactions, Atmospheric Models, Japan, Meridional Flow, Stratospheric Warming
Scientific paper
Mean winds at 82-106 km altitude have been almost continuously monitored by the Kyoto meteor radar over the period from May 1983 to December 1985. The mean zonal wind becomes eastward with amplitudes as large as 30 m/s in the summer months (May-August), maximizing early in July at 95 km altitude, while it is less than 10 m/s at all the observed altitudes during the equinoxes. It is normally eastward in winter at low altitudes, although it sometimes becomes westward during sudden stratospheric warmings. The mean meridional wind is usually equatorward and is weaker than the zonal component. A southward wind exceeding 10/ms is detected in July and August. The observed mean winds are compared with the CIRA 1972 model and coincidences with sudden warmings of changes in zonal wind direction are pointed out.
Kato Shoji
Nakamura Takashi
Tsuda Teruhisa
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