Emergence of healing in the Antarctic ozone layer
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Solomon_Emergence of healing.pdf
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Author(s)
Kinnison, Doug
Mills, Michael J.
Neely, Ryan R.
Schmidt, Anja
Solomon, Susan
Ivy, Diane J
Date Issued
July 2016
Journal
Science
Publisher
American Association for the Advancement of Science
Citation
Solomon, Susan et al. “Emergence of Healing in the Antarctic Ozone Layer.” Science 353.6296 (2016): 269–274.
Version
Author's final manuscript
Abstract
Industrial chlorofluorocarbons that cause ozone depletion have been phased out under the Montreal Protocol. A chemically driven increase in polar ozone (or “healing”) is expected in response to this historic agreement. Observations and model calculations together indicate that healing of the Antarctic ozone layer has now begun to occur during the month of September. Fingerprints of September healing since 2000 include (i) increases in ozone column amounts, (ii) changes in the vertical profile of ozone concentration, and (iii) decreases in the areal extent of the ozone hole. Along with chemistry, dynamical and temperature changes have contributed to the healing but could represent feedbacks to chemistry. Volcanic eruptions have episodically interfered with healing, particularly during 2015, when a record October ozone hole occurred after the Calbuco eruption.
MIT Department
Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1126/science.aae0061
