Mesosphere-Thermosphere Coupling

Details Mesosphere-Thermosphere Coupling Mesosphere-Thermosphere Coupling

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004agufmsa14a..06f&link_type=abstract

American Geophysical Union, Fall Meeting 2004, abstract #SA14A-06

Physics

3332 Mesospheric Dynamics, 3334 Middle Atmosphere Dynamics (0341, 0342), 3369 Thermospheric Dynamics (0358), 3384 Waves And Tides

Scientific paper

The mesosphere supplies energy, momentum and heat to the thermosphere via upward-propagating tides, gravity waves and planetary waves that originate at various levels in the atmosphere. These waves redistribute neutral and ionized constituents, and generate electric fields. Their relevance to thermosphere-ionosphere variability becomes particular evident during solar minimum, when effects due to solar particle and EUV radiation are subdued. In this paper, three aspects of the problem are elucidated: (1) The use of general circulation models to provide information on wave coupling into the thermosphere; (2) the use of Hough Mode Extensions to estimate total mass density variability consistent with wind or temperature observations measured near the mesopause; and (3) the combined use of measurements and theory to estimate the zonal mean winds and temperatures generated due to dissipation of upward-propagating tides.

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