Physics
Scientific paper
Dec 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005agufmsa53a1157w&link_type=abstract
American Geophysical Union, Fall Meeting 2005, abstract #SA53A-1157
Physics
3332 Mesospheric Dynamics, 3334 Middle Atmosphere Dynamics (0341, 0342), 3389 Tides And Planetary Waves
Scientific paper
A sudden stratospheric warming occurs spontaneously in a model run of the extended Canadian Middle Atmosphere model in late January. The effects of the warming extend through the mesosphere and into the lower thermosphere. The mesospheric signature is a cooling but the thermospheric signature is a warming. Prior to the warming both wave 1 and wave 2 signatures are enhanced. The zonal component of the non-orographic gravity wave drag is significant prior to the warming but disappears during the warming. In this paper, the evolution of the background fields, the planetary wave signatures, and the gravity wave drag is presented and possible reasons for the observed behaviour discussed.
Du Jiulin
Veselinovic D.
Ward William E.
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