Summary
The cause of seasonal trends in the zonal asymmetry of the total ozone column (TOC) at high southern latitudes are examined. Using ERA-Interim assimilated meteorological data, we examine characteristics of extra-tropical Rossby waves, the location of the stratospheric polar vortex and metrics of the Ozone Hole, and their relationship with observed trends in the TOC distribution. We find that the TOC trends are consistent with long-term changes in the phase and amplitude of quasi-stationary Rossby waves, which show seasonal differences that suggest separate influences from springtime ozone depletion and other climate processes. The possible climate-related influences on the quasi-stationary Rossby waves are discussed.
Authors:Alexander S.P. Klekociuk A.R. Siddaway J. Grystai A. Melinivsky G. Petelina S. Schofield R. Stone K.
Published in: 2013
Category 3: Poster
Program area: Climate Processes and Change
Alexander S.P., Klekociuk A.R., Siddaway J., Grystai A., Melinivsky G., Petelina S., Schofield R., Stone K.
(2013)
Influences of circulation changes on the distribution of Antarctic stratospheric ozone,
Davos Atmosphere and Cryosphere Assembly 2013, Davos, Switzerland, 8-12 July 2013
.;
http://www.daca-13.org/index_EN;
Related projects
Polar FORCeS: Polar Feedbacks between Ozone Recovery and Climate in the Southern hemisphere
KLEKOCIUK, Dr Andrew
Australia (or home country)