The 4-day wave in the Antarctic mesosphere

Details The 4-day wave in the Antarctic mesosphere The 4-day wave in the Antarctic mesosphere

Sep 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995jgr...10018899l&link_type=abstract

Journal of Geophysical Research, Volume 100, Issue D9, p. 18899-18908

Physics

10

Meteorology And Atmospheric Dynamics: Mesospheric Dynamics, Meteorology And Atmospheric Dynamics: Middle Atmosphere Dynamics, Meteorology And Atmospheric Dynamics: Waves And Tides

Scientific paper

A zonal wave number one eastward propagating planetary wave observed in the high latitude winter stratosphere with a period near 4 days has been studied by a number of previous authors. Radar observations coupled with stratospheric analyses are here used to demonstrate that this wave, known as the 4-day wave, extends into the Antarctic upper mesosphere. Previous workers have asserted that the wave is a manifestation of the observation of warm pools rotating in the polar vortex, and that the pool seems to behave in a quasi-nondispersive manner. The observation of the 4-day wave in the upper mesosphere presented here appears to validate previous claims that the warm pools are being maintained by wavelike dynamics, rather than simple advection.

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