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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ftdoajarticles:oai:doaj.org/article:568f91ef2ed94f51a0dd5409dc04b1cd 2024-09-15T17:48:09+00:00 Chemical ozone loss and chlorine activation in the Antarctic winters of 2013–2020 R. Roy P. Kumar J. Kuttippurath F. Lefevre 2024-02-01T00:00:00Z https://doi.org/10.5194/acp-24-2377-2024 https://doaj.org/article/568f91ef2ed94f51a0dd5409dc04b1cd EN eng Copernicus Publications https://acp.copernicus.org/articles/24/2377/2024/acp-24-2377-2024.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-24-2377-2024 1680-7316 1680-7324 https://doaj.org/article/568f91ef2ed94f51a0dd5409dc04b1cd Atmospheric Chemistry and Physics, Vol 24, Pp 2377-2386 (2024) Physics QC1-999 Chemistry QD1-999 article 2024 ftdoajarticles https://doi.org/10.5194/acp-24-2377-2024 2024-08-05T17:49:58Z 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) ( 12.6×10 6 km 2 ) 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 Directory of Open Access Journals: DOAJ Articles Atmospheric Chemistry and Physics 24 4 2377 2386 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
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ftdoajarticles |
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English |
topic |
Physics QC1-999 Chemistry QD1-999 |
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Physics QC1-999 Chemistry QD1-999 R. Roy P. Kumar J. Kuttippurath F. Lefevre Chemical ozone loss and chlorine activation in the Antarctic winters of 2013–2020 |
topic_facet |
Physics QC1-999 Chemistry QD1-999 |
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) ( 12.6×10 6 km 2 ) 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 |
R. Roy P. Kumar J. Kuttippurath F. Lefevre |
author_facet |
R. Roy P. Kumar J. Kuttippurath F. Lefevre |
author_sort |
R. Roy |
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://doaj.org/article/568f91ef2ed94f51a0dd5409dc04b1cd |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
Atmospheric Chemistry and Physics, Vol 24, Pp 2377-2386 (2024) |
op_relation |
https://acp.copernicus.org/articles/24/2377/2024/acp-24-2377-2024.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-24-2377-2024 1680-7316 1680-7324 https://doaj.org/article/568f91ef2ed94f51a0dd5409dc04b1cd |
op_doi |
https://doi.org/10.5194/acp-24-2377-2024 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
24 |
container_issue |
4 |
container_start_page |
2377 |
op_container_end_page |
2386 |
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1810289301441740800 |