Physics
Scientific paper
Dec 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003agufmsa51a0505p&link_type=abstract
American Geophysical Union, Fall Meeting 2003, abstract #SA51A-0505
Physics
0310 Airglow And Aurora, 3220 Nonlinear Dynamics, 3332 Mesospheric Dynamics, 3384 Waves And Tides
Scientific paper
We describe and categorize observations of mesospheric frontal events in OH Meinel and atomic-oxygen green-line airglows from mid- and low-latitude sites. Such extensive and long-lasting displays were first observed by Taylor and co-workers in the ALOHA-93 Campaign and attributed by Dewan and Picard to the existence of an internal-wave undular bore, a transient phase motion in a mesospheric wave duct. Prior observations of internal-wave bores had been made on ducts in the atmospheric boundary layer and the upper ocean, and such disturbances have been found to develop into solitons under certain conditions. We examine how wave ducts supporting bores can be formed by atmospheric temperature and wind structure near the mesopause and carry out calculations of the dynamics of bore propagation and of the airglow response, comparing the result of calculations to the observations.
Cohen Edith
Dewan E. M.
Picard Richard H.
Seo S. H.
Taylor Mary Jane
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