The influence of iodine on the Antarctic stratospheric ozone hole
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pnas.2110864119.pdf
Description
Published version
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2.35 MB
Format
Adobe PDF
Checksum (MD5)
30dedd9dd7b77e110e974f0ba2098cc4
Author(s)
Cuevas, Carlos A
Fernandez, Rafael P
Kinnison, Douglas E
Li, Qinyi
Lamarque, Jean-François
Trabelsi, Tarek
Francisco, Joseph S
Solomon, Susan
Saiz-Lopez, Alfonso
Date Issued
2022
Journal
Proceedings of the National Academy of Sciences of the United States of America
Publisher
Proceedings of the National Academy of Sciences
Citation
Cuevas, Carlos A, Fernandez, Rafael P, Kinnison, Douglas E, Li, Qinyi, Lamarque, Jean-François et al. 2022. "The influence of iodine on the Antarctic stratospheric ozone hole." Proceedings of the National Academy of Sciences of the United States of America, 119 (7).
Version
Final published version
Abstract
Significance
The role of chlorine and bromine in Antarctic stratospheric ozone depletion is well known. However, the contribution of iodine to the ozone hole chemistry has not been assessed, mainly due to the negligible amounts of iodine previously reported to enter the stratosphere. New measurements demonstrate that the injection of iodine to the lower stratosphere is higher than previously assumed. Based on these observations, our modeling work shows that iodine chemistry can enhance spring ozone loss at the lower part of the Antarctic ozone hole, and even dominate the halogen-mediated ozone loss during summer. Iodine can also alter, by several days, the timing of the seasonal formation and closure of the ozone hole.
The role of chlorine and bromine in Antarctic stratospheric ozone depletion is well known. However, the contribution of iodine to the ozone hole chemistry has not been assessed, mainly due to the negligible amounts of iodine previously reported to enter the stratosphere. New measurements demonstrate that the injection of iodine to the lower stratosphere is higher than previously assumed. Based on these observations, our modeling work shows that iodine chemistry can enhance spring ozone loss at the lower part of the Antarctic ozone hole, and even dominate the halogen-mediated ozone loss during summer. Iodine can also alter, by several days, the timing of the seasonal formation and closure of the ozone hole.
MIT Department
Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences
Terms of Use
Creative Commons Attribution-NonCommercial-NoDerivs License
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DOI of Published Version
https://doi.org/10.1073/PNAS.2110864119
