On Recent Large Antarctic Ozone Holes and Ozone Recovery Metrics
Name
Geophysical Research Letters - 2021 - Stone - On Recent Large Antarctic Ozone Holes and Ozone Recovery Metrics.pdf
Description
Published version
Size
1.05 MB
Format
Adobe PDF
Checksum (MD5)
8bfa54c526c5d9a8512c33f9a104ddbd
Author(s)
Stone, KA
Solomon, S
Kinnison, DE
Mills, Michael J
Date Issued
2021
Journal
Geophysical Research Letters
Publisher
American Geophysical Union (AGU)
Citation
Stone, KA, Solomon, S, Kinnison, DE and Mills, Michael J. 2021. "On Recent Large Antarctic Ozone Holes and Ozone Recovery Metrics." Geophysical Research Letters, 48 (22).
Version
Final published version
Abstract
The 2015 and 2020 ozone holes set record sizes in October-December. We show that these years, as well as other recent large ozone holes, still adhere to a fundamental recovery metric: the later onset of early spring ozone depletion as chlorine and bromine diminishes. This behavior is also captured in the Whole Atmosphere Chemistry Climate Model. We quantify observed recovery trends of the onset of the ozone hole and in the size of the September ozone hole, with good model agreement. A substantial reduction in ozone hole depth during September over the past decade is also seen. Our results indicate that, due to dynamical phenomena, it is likely that large ozone holes will continue to occur intermittently in October-December, but ozone recovery will still be detectable through the later onset, smaller, and less deep September ozone holes: metrics that are governed more by chemical processes.
MIT Department
Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences
Terms of Use
Creative Commons Attribution NonCommercial License 4.0
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1029/2021GL095232
