Physics
Scientific paper
May 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004agusmsa41a..10d&link_type=abstract
American Geophysical Union, Spring Meeting 2004, abstract #SA41A-10
Physics
3332 Mesospheric Dynamics, 3369 Thermospheric Dynamics (0358), 3384 Waves And Tides
Scientific paper
Temperature signatures associated with migrating and non-migrating tides have been diagnosed from one year of a four year run of the extended Canadian Middle Atmosphere Model. Significant temperature amplitudes are observed for eastward and westward non-migrating diurnal and semidiurnal wave 1 and wave 2 modes which in the meospause region are of a similar magnitude to the better known migrating tides. The amplitudes of the the non-migrating tides vary significantly in time. For most modes there are episodic enhancements in the amplitudes and changes in their latitudinal structure. Annual and semi-annual variations in the amplitudes are also observed. The variability of these modes is likely the result of variability in the tropospheric forcing and non-linear interactions between tides and planetary waves.
Du Jiulin
Ward William E.
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