Computer Science
Scientific paper
Dec 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985icsu...18u....s&link_type=abstract
In International Council of Scientific Unions Handbook for MAP, Vol. 18 5 p (SEE N86-27719 18-46)
Computer Science
Heat Flux, Planetary Waves, Stratosphere, Traveling Waves, Troposphere, Vacillation, Vorticity, Barotropic Flow, Momentum Transfer, Stratospheric Warming, Transport Properties, Wave Amplification
Scientific paper
It was shown that there exists a correspondence between interference of the 16-day wave with the stationary planetary wave and vacillations in eddy heat and momentum fluxes. There has been speculation on the role such interference may play in stratospheric warmings. The appearance of higher-order normal modes, e.g., the 16-day wave, prior to disturbances in the stratospheric vortex has also been noted. Since amplitudes of the 16-day wave are compared to those of the stationary component, it can significantly alter the instantaneous total wave field. The behavior of the wave number 1 height field at 60 deg N during January 1979 is shown when a large amplitude disturbance retrogressed barotropically around the globe over much of the troposphere and stratosphere. This transient disturbance has been identified with the 16-day wave. More generally, the presence of fluctuating planetary wave activity can, through combined interference, alter the instantaneous planetary wave field as well as the transports it produces. The implications of such interference in a quasi-geostrophic framework has been explored, using the Eliassen-Palm (EP) flux as a diagnostic.
Garcia Rafael
Salby Murry L.
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