Antarctic ozone hole modifies iodine geochemistry on the Antarctic Plateau
Abstract Polar stratospheric ozone has decreased since the 1970s due to anthropogenic emissions of chlorofluorocarbons and halons, resulting in the formation of an ozone hole over Antarctica. The effects of the ozone hole and the associated increase in incoming UV radiation on terrestrial and marine...
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2021
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Online Access: | http://dx.doi.org/10.1038/s41467-021-26109-x https://www.nature.com/articles/s41467-021-26109-x.pdf https://www.nature.com/articles/s41467-021-26109-x |
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crspringernat:10.1038/s41467-021-26109-x 2023-05-15T14:07:37+02:00 Antarctic ozone hole modifies iodine geochemistry on the Antarctic Plateau Spolaor, Andrea Burgay, François Fernandez, Rafael P. Turetta, Clara Cuevas, Carlos A. Kim, Kitae Kinnison, Douglas E. Lamarque, Jean-François de Blasi, Fabrizio Barbaro, Elena Corella, Juan Pablo Vallelonga, Paul Frezzotti, Massimo Barbante, Carlo Saiz-Lopez, Alfonso European Commission National Center for Atmospheric Research Korea Polar Research Institute 2021 http://dx.doi.org/10.1038/s41467-021-26109-x https://www.nature.com/articles/s41467-021-26109-x.pdf https://www.nature.com/articles/s41467-021-26109-x en eng Springer Science and Business Media LLC https://creativecommons.org/licenses/by/4.0 https://creativecommons.org/licenses/by/4.0 CC-BY Nature Communications volume 12, issue 1 ISSN 2041-1723 General Physics and Astronomy General Biochemistry, Genetics and Molecular Biology General Chemistry journal-article 2021 crspringernat https://doi.org/10.1038/s41467-021-26109-x 2022-01-04T15:06:18Z Abstract Polar stratospheric ozone has decreased since the 1970s due to anthropogenic emissions of chlorofluorocarbons and halons, resulting in the formation of an ozone hole over Antarctica. The effects of the ozone hole and the associated increase in incoming UV radiation on terrestrial and marine ecosystems are well established; however, the impact on geochemical cycles of ice photoactive elements, such as iodine, remains mostly unexplored. Here, we present the first iodine record from the inner Antarctic Plateau (Dome C) that covers approximately the last 212 years (1800-2012 CE). Our results show that the iodine concentration in ice remained constant during the pre-ozone hole period (1800-1974 CE) but has declined twofold since the onset of the ozone hole era (~1975 CE), closely tracking the total ozone evolution over Antarctica. Based on ice core observations, laboratory measurements and chemistry-climate model simulations, we propose that the iodine decrease since ~1975 is caused by enhanced iodine re-emission from snowpack due to the ozone hole-driven increase in UV radiation reaching the Antarctic Plateau. These findings suggest the potential for ice core iodine records from the inner Antarctic Plateau to be as an archive for past stratospheric ozone trends. Article in Journal/Newspaper Antarc* Antarctic Antarctica ice core Springer Nature (via Crossref) Antarctic The Antarctic Nature Communications 12 1 |
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Open Polar |
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Springer Nature (via Crossref) |
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crspringernat |
language |
English |
topic |
General Physics and Astronomy General Biochemistry, Genetics and Molecular Biology General Chemistry |
spellingShingle |
General Physics and Astronomy General Biochemistry, Genetics and Molecular Biology General Chemistry Spolaor, Andrea Burgay, François Fernandez, Rafael P. Turetta, Clara Cuevas, Carlos A. Kim, Kitae Kinnison, Douglas E. Lamarque, Jean-François de Blasi, Fabrizio Barbaro, Elena Corella, Juan Pablo Vallelonga, Paul Frezzotti, Massimo Barbante, Carlo Saiz-Lopez, Alfonso Antarctic ozone hole modifies iodine geochemistry on the Antarctic Plateau |
topic_facet |
General Physics and Astronomy General Biochemistry, Genetics and Molecular Biology General Chemistry |
description |
Abstract Polar stratospheric ozone has decreased since the 1970s due to anthropogenic emissions of chlorofluorocarbons and halons, resulting in the formation of an ozone hole over Antarctica. The effects of the ozone hole and the associated increase in incoming UV radiation on terrestrial and marine ecosystems are well established; however, the impact on geochemical cycles of ice photoactive elements, such as iodine, remains mostly unexplored. Here, we present the first iodine record from the inner Antarctic Plateau (Dome C) that covers approximately the last 212 years (1800-2012 CE). Our results show that the iodine concentration in ice remained constant during the pre-ozone hole period (1800-1974 CE) but has declined twofold since the onset of the ozone hole era (~1975 CE), closely tracking the total ozone evolution over Antarctica. Based on ice core observations, laboratory measurements and chemistry-climate model simulations, we propose that the iodine decrease since ~1975 is caused by enhanced iodine re-emission from snowpack due to the ozone hole-driven increase in UV radiation reaching the Antarctic Plateau. These findings suggest the potential for ice core iodine records from the inner Antarctic Plateau to be as an archive for past stratospheric ozone trends. |
author2 |
European Commission National Center for Atmospheric Research Korea Polar Research Institute |
format |
Article in Journal/Newspaper |
author |
Spolaor, Andrea Burgay, François Fernandez, Rafael P. Turetta, Clara Cuevas, Carlos A. Kim, Kitae Kinnison, Douglas E. Lamarque, Jean-François de Blasi, Fabrizio Barbaro, Elena Corella, Juan Pablo Vallelonga, Paul Frezzotti, Massimo Barbante, Carlo Saiz-Lopez, Alfonso |
author_facet |
Spolaor, Andrea Burgay, François Fernandez, Rafael P. Turetta, Clara Cuevas, Carlos A. Kim, Kitae Kinnison, Douglas E. Lamarque, Jean-François de Blasi, Fabrizio Barbaro, Elena Corella, Juan Pablo Vallelonga, Paul Frezzotti, Massimo Barbante, Carlo Saiz-Lopez, Alfonso |
author_sort |
Spolaor, Andrea |
title |
Antarctic ozone hole modifies iodine geochemistry on the Antarctic Plateau |
title_short |
Antarctic ozone hole modifies iodine geochemistry on the Antarctic Plateau |
title_full |
Antarctic ozone hole modifies iodine geochemistry on the Antarctic Plateau |
title_fullStr |
Antarctic ozone hole modifies iodine geochemistry on the Antarctic Plateau |
title_full_unstemmed |
Antarctic ozone hole modifies iodine geochemistry on the Antarctic Plateau |
title_sort |
antarctic ozone hole modifies iodine geochemistry on the antarctic plateau |
publisher |
Springer Science and Business Media LLC |
publishDate |
2021 |
url |
http://dx.doi.org/10.1038/s41467-021-26109-x https://www.nature.com/articles/s41467-021-26109-x.pdf https://www.nature.com/articles/s41467-021-26109-x |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic Antarctica ice core |
genre_facet |
Antarc* Antarctic Antarctica ice core |
op_source |
Nature Communications volume 12, issue 1 ISSN 2041-1723 |
op_rights |
https://creativecommons.org/licenses/by/4.0 https://creativecommons.org/licenses/by/4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1038/s41467-021-26109-x |
container_title |
Nature Communications |
container_volume |
12 |
container_issue |
1 |
_version_ |
1766279615709446144 |