Chemical ozone loss and chlorine activation in the Antarctic winters of 2013–2020

The annual formation of an ozone hole in the austral spring has regional and global climate implications. The Antarctic ozone hole has already changed the precipitation, temperature and atmospheric circulation patterns, and thus the surface climate of many regions in the Southern Hemisphere (SH). Th...

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Published in:Atmospheric Chemistry and Physics
Main Authors: Roy, Raina, Kumar, Pankaj, Kuttippurath, Jayanarayanan, Lefevre, Franck
Format: Article in Journal/Newspaper
Language:English
Published: Copernicus Publications 2024
Subjects:
Online Access:https://doi.org/10.5194/acp-24-2377-2024
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spelling ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00071907 2024-04-14T08:02:21+00:00 Chemical ozone loss and chlorine activation in the Antarctic winters of 2013–2020 Roy, Raina Kumar, Pankaj Kuttippurath, Jayanarayanan Lefevre, Franck 2024-02 electronic https://doi.org/10.5194/acp-24-2377-2024 https://noa.gwlb.de/receive/cop_mods_00071907 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00070149/acp-24-2377-2024.pdf https://acp.copernicus.org/articles/24/2377/2024/acp-24-2377-2024.pdf eng eng Copernicus Publications Atmospheric Chemistry and Physics -- http://www.atmos-chem-phys.net/volumes_and_issues.html -- http://www.bibliothek.uni-regensburg.de/ezeit/?2069847 -- 1680-7324 https://doi.org/10.5194/acp-24-2377-2024 https://noa.gwlb.de/receive/cop_mods_00071907 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00070149/acp-24-2377-2024.pdf https://acp.copernicus.org/articles/24/2377/2024/acp-24-2377-2024.pdf https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2024 ftnonlinearchiv https://doi.org/10.5194/acp-24-2377-2024 2024-03-19T12:18:16Z The annual formation of an ozone hole in the austral spring has regional and global climate implications. The Antarctic ozone hole has already changed the precipitation, temperature and atmospheric circulation patterns, and thus the surface climate of many regions in the Southern Hemisphere (SH). Therefore, the study of ozone loss variability is important to assess its consequential effects on the climate and public health. Our study uses satellite observations from the Microwave Limb Sounder on Aura and the passive-tracer method to quantify the ozone loss for the past 8 years (2013–2020) in the Antarctic. We observe the highest ozone loss (about 3.5 ppmv) in 2020, owing to the high chlorine activation (about 2.2 ppbv), steady polar vortex, and huge expanses of polar stratospheric clouds (PSCs) (12.6×106 km2) in the winter. The spring of 2019 also showed a high ozone loss, although the year had a rare minor warming in mid-September. The chlorine activation in 2015 (1.9 ppbv) was the weakest, and the wave forcing from the lower latitudes was very high in 2017 (up to −60 km s−1). The analysis shows significant interannual variability in the Antarctic ozone as compared to the immediate previous decade (2000–2010). The study helps to understand the role of dynamics and chemistry in the interannual variability of ozone depletion over the years. Article in Journal/Newspaper Antarc* Antarctic Niedersächsisches Online-Archiv NOA Antarctic Austral The Antarctic Atmospheric Chemistry and Physics 24 4 2377 2386
institution Open Polar
collection Niedersächsisches Online-Archiv NOA
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language English
topic article
Verlagsveröffentlichung
spellingShingle article
Verlagsveröffentlichung
Roy, Raina
Kumar, Pankaj
Kuttippurath, Jayanarayanan
Lefevre, Franck
Chemical ozone loss and chlorine activation in the Antarctic winters of 2013–2020
topic_facet article
Verlagsveröffentlichung
description The annual formation of an ozone hole in the austral spring has regional and global climate implications. The Antarctic ozone hole has already changed the precipitation, temperature and atmospheric circulation patterns, and thus the surface climate of many regions in the Southern Hemisphere (SH). Therefore, the study of ozone loss variability is important to assess its consequential effects on the climate and public health. Our study uses satellite observations from the Microwave Limb Sounder on Aura and the passive-tracer method to quantify the ozone loss for the past 8 years (2013–2020) in the Antarctic. We observe the highest ozone loss (about 3.5 ppmv) in 2020, owing to the high chlorine activation (about 2.2 ppbv), steady polar vortex, and huge expanses of polar stratospheric clouds (PSCs) (12.6×106 km2) in the winter. The spring of 2019 also showed a high ozone loss, although the year had a rare minor warming in mid-September. The chlorine activation in 2015 (1.9 ppbv) was the weakest, and the wave forcing from the lower latitudes was very high in 2017 (up to −60 km s−1). The analysis shows significant interannual variability in the Antarctic ozone as compared to the immediate previous decade (2000–2010). The study helps to understand the role of dynamics and chemistry in the interannual variability of ozone depletion over the years.
format Article in Journal/Newspaper
author Roy, Raina
Kumar, Pankaj
Kuttippurath, Jayanarayanan
Lefevre, Franck
author_facet Roy, Raina
Kumar, Pankaj
Kuttippurath, Jayanarayanan
Lefevre, Franck
author_sort Roy, Raina
title Chemical ozone loss and chlorine activation in the Antarctic winters of 2013–2020
title_short Chemical ozone loss and chlorine activation in the Antarctic winters of 2013–2020
title_full Chemical ozone loss and chlorine activation in the Antarctic winters of 2013–2020
title_fullStr Chemical ozone loss and chlorine activation in the Antarctic winters of 2013–2020
title_full_unstemmed Chemical ozone loss and chlorine activation in the Antarctic winters of 2013–2020
title_sort chemical ozone loss and chlorine activation in the antarctic winters of 2013–2020
publisher Copernicus Publications
publishDate 2024
url https://doi.org/10.5194/acp-24-2377-2024
https://noa.gwlb.de/receive/cop_mods_00071907
https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00070149/acp-24-2377-2024.pdf
https://acp.copernicus.org/articles/24/2377/2024/acp-24-2377-2024.pdf
geographic Antarctic
Austral
The Antarctic
geographic_facet Antarctic
Austral
The Antarctic
genre Antarc*
Antarctic
genre_facet Antarc*
Antarctic
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https://doi.org/10.5194/acp-24-2377-2024
https://noa.gwlb.de/receive/cop_mods_00071907
https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00070149/acp-24-2377-2024.pdf
https://acp.copernicus.org/articles/24/2377/2024/acp-24-2377-2024.pdf
op_rights https://creativecommons.org/licenses/by/4.0/
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container_title Atmospheric Chemistry and Physics
container_volume 24
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