Recorded presentation11.2
Climatology, trends and variability of the dynamical forcings of the stratospheric zonal flow and ozone transport
Erwan Monier, University of California, Davis, Davis, CA; and B. C. Weare
The troposphere-stratosphere coupling is currently drawing a lot of interest since the stratosphere was shown to have a significant impact on climate change. This study aims at better understanding the physical processes responsible for driving variations in the stratospheric dynamics. We use the Transformed Eulerian-Mean formulation and the ECMWF ERA-40 reanalysis to investigate the various dynamical forcings of wave-mean flow interaction and to evaluate the dynamical transport of ozone and its significance compared to radiative-chemical effects. Stratospheric variability associated with tropospheric phenomena, such as ENSO, and dramatic trends, including jet shifts and polar vortex intensification, are presented.
Session 11, Stratospheric Ozone Variability
Thursday, 11 June 2009, 1:50 PM-3:30 PM, Pinnacle A
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