Variability and trends in total and vertically resolved stratospheric ozone based on the CATO ozone data set ...

• Main Authors: Brunner, Dominik, Staehelin, Johannes, Maeder, J.A., Wohltmann, Ingo, Bodeker, Greg E.
• Format: Article in Journal/Newspaper
• Language: English
• Published: ETH Zurich 2006
• Subjects: Arctic
• Online Access: https://dx.doi.org/10.3929/ethz-b-000023906; http://hdl.handle.net/20.500.11850/23906

Trends in ozone columns and vertical distributions were calculated for the period 1979–2004 based on the ozone data set CATO (Candidoz Assimilated Three-dimensional Ozone) using a multiple linear regression model. CATO has been reconstructed from TOMS, GOME and SBUV total column ozone observations in an equivalent latitude and potential temperature framework and offers a pole to pole coverage of the stratosphere on 15 potential temperature levels. The regression model includes explanatory variables describing the influence of the quasi-biennial oscillation (QBO), volcanic eruptions, the solar cycle, the Brewer-Dobson circulation, Arctic ozone depletion, and the increase in stratospheric chlorine. The effects of displacements of the polar vortex and jet streams due to planetary waves, which may significantly affect trends at a given geographical latitude, are eliminated in the equivalent latitude framework. The QBO shows a strong signal throughout most of the lower stratosphere with peak amplitudes in the ... : Atmospheric Chemistry and Physics, 6 (12) ...