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

Since its discovery in 1985, the formation of ozone holes in the Antarctic and the resulting ultra-violet (UV) radiation reaching the planet's surface has been a source of major concern. The annual formation of ozone hole in the austral springs has regional and global climate implications. Ozon...

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Main Authors: Roy, Raina, Kumar, Pankaj, Kuttippurath, Jayanarayanan, Lefevre, Franck
Format: Article in Journal/Newspaper
Language:English
Published: Copernicus Publications 2023
Subjects:
Online Access:https://doi.org/10.5194/egusphere-2023-1189
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spelling ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00067466 2023-07-23T04:15:38+02:00 Chemical ozone loss and chlorine activation in the Antarctic winters 2013–2020 Roy, Raina Kumar, Pankaj Kuttippurath, Jayanarayanan Lefevre, Franck 2023-06 electronic https://doi.org/10.5194/egusphere-2023-1189 https://noa.gwlb.de/receive/cop_mods_00067466 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00065923/egusphere-2023-1189.pdf https://egusphere.copernicus.org/preprints/2023/egusphere-2023-1189/egusphere-2023-1189.pdf eng eng Copernicus Publications https://doi.org/10.5194/egusphere-2023-1189 https://noa.gwlb.de/receive/cop_mods_00067466 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00065923/egusphere-2023-1189.pdf https://egusphere.copernicus.org/preprints/2023/egusphere-2023-1189/egusphere-2023-1189.pdf https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2023 ftnonlinearchiv https://doi.org/10.5194/egusphere-2023-1189 2023-07-02T23:18:49Z Since its discovery in 1985, the formation of ozone holes in the Antarctic and the resulting ultra-violet (UV) radiation reaching the planet's surface has been a source of major concern. The annual formation of ozone hole in the austral springs has regional and global climate implications. Ozone depletion episodes can change precipitation, temperature, and atmospheric circulation patterns, affecting the surface climate primarily 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 examines and quantifies the ozone loss and its cycle for the past 8 years in the Antarctic using satellite measurements (Microwave Limb Sounder on Aura). We observe the highest ozone loss (3.8–4.0 ppmv) in spring 2020 followed by 2016. The high chlorine activation (2.3 ppbv), stable polar vortex and extensive areas of polar stratospheric clouds (PSCs) (12.6 Million Km2) favored the large ozone loss in 2000. The spring of 2019 also witnessed a moderately high ozone loss, although the year was marked by a rare minor warming in mid-September. Relatively smaller ozone loss (2.4–2.5 ppmv) was present in 2017 and 2015. It was mainly due to reduced chlorine activation and relatively higher temperature in these winters. Additionally, the chlorine activation in 2015 (1.95 ppbv) was the lowest and the wave forcing from the lower latitudes was very high in 2017 (up to -60 Kms-1). The analysis shows significant interannual variability in the Antarctic ozone as for the immediate previous decade. The study helps to understand the role of the dynamics and chemistry in the inter-annual variability of ozone depletion for the years. Article in Journal/Newspaper Antarc* Antarctic Niedersächsisches Online-Archiv NOA Antarctic Austral The Antarctic
institution Open Polar
collection Niedersächsisches Online-Archiv NOA
op_collection_id ftnonlinearchiv
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 2013–2020
topic_facet article
Verlagsveröffentlichung
description Since its discovery in 1985, the formation of ozone holes in the Antarctic and the resulting ultra-violet (UV) radiation reaching the planet's surface has been a source of major concern. The annual formation of ozone hole in the austral springs has regional and global climate implications. Ozone depletion episodes can change precipitation, temperature, and atmospheric circulation patterns, affecting the surface climate primarily 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 examines and quantifies the ozone loss and its cycle for the past 8 years in the Antarctic using satellite measurements (Microwave Limb Sounder on Aura). We observe the highest ozone loss (3.8–4.0 ppmv) in spring 2020 followed by 2016. The high chlorine activation (2.3 ppbv), stable polar vortex and extensive areas of polar stratospheric clouds (PSCs) (12.6 Million Km2) favored the large ozone loss in 2000. The spring of 2019 also witnessed a moderately high ozone loss, although the year was marked by a rare minor warming in mid-September. Relatively smaller ozone loss (2.4–2.5 ppmv) was present in 2017 and 2015. It was mainly due to reduced chlorine activation and relatively higher temperature in these winters. Additionally, the chlorine activation in 2015 (1.95 ppbv) was the lowest and the wave forcing from the lower latitudes was very high in 2017 (up to -60 Kms-1). The analysis shows significant interannual variability in the Antarctic ozone as for the immediate previous decade. The study helps to understand the role of the dynamics and chemistry in the inter-annual variability of ozone depletion for 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 2013–2020
title_short Chemical ozone loss and chlorine activation in the Antarctic winters 2013–2020
title_full Chemical ozone loss and chlorine activation in the Antarctic winters 2013–2020
title_fullStr Chemical ozone loss and chlorine activation in the Antarctic winters 2013–2020
title_full_unstemmed Chemical ozone loss and chlorine activation in the Antarctic winters 2013–2020
title_sort chemical ozone loss and chlorine activation in the antarctic winters 2013–2020
publisher Copernicus Publications
publishDate 2023
url https://doi.org/10.5194/egusphere-2023-1189
https://noa.gwlb.de/receive/cop_mods_00067466
https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00065923/egusphere-2023-1189.pdf
https://egusphere.copernicus.org/preprints/2023/egusphere-2023-1189/egusphere-2023-1189.pdf
geographic Antarctic
Austral
The Antarctic
geographic_facet Antarctic
Austral
The Antarctic
genre Antarc*
Antarctic
genre_facet Antarc*
Antarctic
op_relation https://doi.org/10.5194/egusphere-2023-1189
https://noa.gwlb.de/receive/cop_mods_00067466
https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00065923/egusphere-2023-1189.pdf
https://egusphere.copernicus.org/preprints/2023/egusphere-2023-1189/egusphere-2023-1189.pdf
op_rights https://creativecommons.org/licenses/by/4.0/
uneingeschränkt
info:eu-repo/semantics/openAccess
op_doi https://doi.org/10.5194/egusphere-2023-1189
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