Articles | Volume 2, issue 2
Weather Clim. Dynam., 2, 453–474, 2021
https://doi.org/10.5194/wcd-2-453-2021
Weather Clim. Dynam., 2, 453–474, 2021
https://doi.org/10.5194/wcd-2-453-2021

Research article 27 May 2021

Research article | 27 May 2021

The wave geometry of final stratospheric warming events

Amy H. Butler and Daniela I. V. Domeisen

Data sets

The ERA-Interim archive Version 2.0 P. Berrisford, D. P. Dee, P. Poli, R. Brugge, M. Fielding, M. Fuentes, P. W. Kållberg, S. Kobayashi, S. Uppala, and A. Simmons https://www.ecmwf.int/node/8174

JRA-55: Japanese 55-year Reanalysis, Daily 3-Hourly and 6-Hourly Data Japan Meteorological Agency/Japan https://doi.org/10.5065/D6HH6H41

The North Atlantic Oscillation index National Oceanic and Atmospheric Administration, Climate Prediction Center https://www.cpc.ncep.noaa.gov/products/precip/CWlink/pna/nao.shtml

BS Filled Total Column Ozone Database (Version 3.4) G. E. Bodeker, S. Kremser, and J. S. Tradowsky https://doi.org/10.5281/zenodo.3908787

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Short summary
We classify by wave geometry the stratospheric polar vortex during the final warming that occurs every spring in both hemispheres due to a combination of radiative and dynamical processes. We show that the shape of the vortex, as well as the timing of the seasonal transition, is linked to total column ozone prior to and surface weather following the final warming. These results have implications for prediction and our understanding of stratosphere–troposphere coupling processes in springtime.