Tides in the 80-100 km height region

Details Tides in the 80-100 km height region Tides in the 80-100 km height region

Dec 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986jatp...48.1159p&link_type=abstract

(International Association of Geomagnetism and Aeronomy, Scientific Assembly on Dynamics and Remote Sensing of the Middle Atmosp

Mathematics

Logic

8

Atmospheric Tides, Thermosphere, Vertical Distribution, Annual Variations, Diurnal Variations, Latitude, Meteorological Radar, Stratospheric Warming, Temperature Effects, Temporal Distribution, Wind Velocity Measurement

Scientific paper

The Institute of Experimental Meteorology (U.S.S.R.) has carried out long-term continuous wind velocity measurements by the meteor radar method for the 80-100 km height region. From this experimental data the seasonal and latitudinal variations of atmospheric tides, as well as the spatial and temporal scales of tidal variability, have been determined. Atmospheric variations with a period of about half-a-day are investigated on the basis of a numerical model. A dependence between the mean wind structure and the semi-diurnal oscillation in the lower thermosphere is established. The influence of stratospheric warmings on semi-diurnal oscillations is also discussed. Numerical experiments show that the mean wind variations cannot explain the observed seasonal variations of a semi-diurnal tide.

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