On Recent Large Antarctic Ozone Holes and Ozone Recovery Metrics
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 i...
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | Article |
| Language: | English |
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American Geophysical Union (AGU)
2023
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| Online Access: | https://hdl.handle.net/1721.1/148243 |
| _version_ | 1826209495385112576 |
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| author | Stone, KA Solomon, S Kinnison, DE Mills, Michael J |
| author2 | Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences |
| author_facet | Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences Stone, KA Solomon, S Kinnison, DE Mills, Michael J |
| author_sort | Stone, KA |
| collection | MIT |
| description | 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. |
| first_indexed | 2024-09-23T14:23:22Z |
| format | Article |
| id | mit-1721.1/148243 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T14:23:22Z |
| publishDate | 2023 |
| publisher | American Geophysical Union (AGU) |
| record_format | dspace |
| spelling | mit-1721.1/1482432023-03-01T03:16:00Z On Recent Large Antarctic Ozone Holes and Ozone Recovery Metrics Stone, KA Solomon, S Kinnison, DE Mills, Michael J Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences 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. 2023-02-28T17:39:53Z 2023-02-28T17:39:53Z 2021 2023-02-28T14:45:19Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/148243 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). en 10.1029/2021GL095232 Geophysical Research Letters Creative Commons Attribution NonCommercial License 4.0 https://creativecommons.org/licenses/by-nc/4.0/ application/pdf American Geophysical Union (AGU) Wiley |
| spellingShingle | Stone, KA Solomon, S Kinnison, DE Mills, Michael J On Recent Large Antarctic Ozone Holes and Ozone Recovery Metrics |
| title | On Recent Large Antarctic Ozone Holes and Ozone Recovery Metrics |
| title_full | On Recent Large Antarctic Ozone Holes and Ozone Recovery Metrics |
| title_fullStr | On Recent Large Antarctic Ozone Holes and Ozone Recovery Metrics |
| title_full_unstemmed | On Recent Large Antarctic Ozone Holes and Ozone Recovery Metrics |
| title_short | On Recent Large Antarctic Ozone Holes and Ozone Recovery Metrics |
| title_sort | on recent large antarctic ozone holes and ozone recovery metrics |
| url | https://hdl.handle.net/1721.1/148243 |
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