AbstractPreliminary meridional wind data from the TIMED Doppler interferometer (TIDI) onboard the TIMED satellite are analyzed for non-migrating diurnal tides. Tidal definitions are given for the most pronounced westward, eastward and standing oscillations (w2, e3, s0). The analysis interval is March 2002 to June 2004 and covers the altitude range 85–105km. Monthly tidal wind fields from 40°S to 40°N are presented. TIDI tides compare favorably with previously reported 95km HRDI results. Non-migrating diurnal tidal wind speeds larger than 30m/s are observed thus emphasizing the important role of non-migrating tides in middle atmosphere coupling. A comparative analysis with the global scale wave model (GSWM) and the thermosphere–ionosphere–mesosphere-electrodynamics general circulation model (TIME-GCM) indicates that both latent heat release in the tropical troposphere and non-linear planetary wave/migrating tide interaction are important sources of non-migrating tides in the mesosphere and lower thermosphere.
Non-migrating diurnal tides as measured by the TIMED Doppler interferometer: Preliminary results
Advances in Space Research ; 35 , 11 ; 1911-1917
2005-01-19
7 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Non-migrating tides , MLT region , TIDI , TIMED , GSWM , TIME-GCM
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