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Potential drivers of the recent large Antarctic ozone holes

Author

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  • Hannah E. Kessenich

    (University of Otago)

  • Annika Seppälä

    (University of Otago)

  • Craig J. Rodger

    (University of Otago)

Abstract

The past three years (2020–2022) have witnessed the re-emergence of large, long-lived ozone holes over Antarctica. Understanding ozone variability remains of high importance due to the major role Antarctic stratospheric ozone plays in climate variability across the Southern Hemisphere. Climate change has already incited new sources of ozone depletion, and the atmospheric abundance of several chlorofluorocarbons has recently been on the rise. In this work, we take a comprehensive look at the monthly and daily ozone changes at different altitudes and latitudes within the Antarctic ozone hole. Following indications of early-spring recovery, the October middle stratosphere is dominated by continued, significant ozone reduction since 2004, amounting to 26% loss in the core of the ozone hole. We link the declines in mid-spring Antarctic ozone to dynamical changes in mesospheric descent within the polar vortex, highlighting the importance of continued monitoring of the state of the ozone layer.

Suggested Citation

  • Hannah E. Kessenich & Annika Seppälä & Craig J. Rodger, 2023. "Potential drivers of the recent large Antarctic ozone holes," Nature Communications, Nature, vol. 14(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-42637-0
    DOI: 10.1038/s41467-023-42637-0
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    References listed on IDEAS

    as
    1. Susan Solomon & Kane Stone & Pengfei Yu & D. M. Murphy & Doug Kinnison & A. R. Ravishankara & Peidong Wang, 2023. "Chlorine activation and enhanced ozone depletion induced by wildfire aerosol," Nature, Nature, vol. 615(7951), pages 259-264, March.
    2. Monika E. Szela̧g & Daniel R. Marsh & Pekka T. Verronen & Annika Seppälä & Niilo Kalakoski, 2022. "Ozone impact from solar energetic particles cools the polar stratosphere," Nature Communications, Nature, vol. 13(1), pages 1-8, December.
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