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Type: Journal article
Title: The 6.5-day wave in the mesosphere and lower thermosphere: evidence for baroclinic/barotropic instability
Author: Lieberman, R.
Riggin, D.
Franke, S.
Manson, A.
Meek, C.
Nakamura, T.
Tsuda, T.
Vincent, R.
Reid, I.
Citation: Journal of Geophysical Research, 2003; 108(D20):9-1-9-14
Publisher: Amer Geophysical Union
Issue Date: 2003
ISSN: 0148-0227
Statement of
Lieberman, R. S., D. M. Riggin, S. J. Franke, A. H. Manson, C. Meek, T. Nakamura, T. Tsuda, R. A. Vincent, and I. Reid
Abstract: A westward propagating zonal wave number 1 wave with a period near 6.5 days was a prominent feature in the mesosphere and lower thermosphere (MLT) during the 1994 equinoxes. The meridional structure of the wave in the upper stratosphere and the MLT is consistent with the 5-day wave structure predicted by normal mode theory. However, the amplitude increases sharply above 80 km, where the wave exhibits a highly organized baroclinic circulation. The eddy fluxes and the background state suggest that the wave is amplified by instability of the mesospheric winds.
DOI: 10.1029/2002JD003349
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