Role of wave-mean flow interaction in sun-climate connections: Historical overview and some new interpretations and results

Details Role of wave-mean flow interaction in sun-climate connections: Historical overview and some new interpretations and results Role of wave-mean flow interaction in sun-climate connections: Historical overview and some new interpretations and results

Jul 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011jastp..73.1594n&link_type=abstract

Journal of Atmospheric and Solar-Terrestrial Physics, Volume 73, Issue 11, p. 1594-1605.

Physics

3

Scientific paper

Quasi-decadal variations in solar irradiance - termed the 11-year solar cycle (SC) - have been linked to variations in a variety of atmospheric circulation features, including the polar vortex, the Brewer-Dobson circulation, and the quasi-biennial oscillation. These features share an underlying commonality: they are all rooted in wave-mean flow interaction. The purpose of this paper is to provide a historical overview of the connection between the SC and wave-mean flow interaction and to propose a more complete theoretical framework for solar modulated wave-mean flow interaction that includes both zonal-mean and zonally asymmetric ozone as intermediaries for communicating variations in solar spectral irradiance to the climate system. We solve a quasi-geostrophic model using the WKB formalism to highlight the physics connecting the SC to planetary wave-drag. Numerical results show the importance of the zonally asymmetric ozone field in mediating the effects of solar variability to the wave-driven circulation in the middle atmosphere.

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