Arctic on the verge of an ozone hole?
Severe vortex-wide ozone loss in the Arctic would expose nearly 650 million people and ecosystem to unhealthy ultra-violet radiation levels. Adding to these worries, and extreme weather events as the harbingers of climate change, clear signature of an ozone hole (ozone column values below 220 DU) ap...
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ftcopernicus:oai:publications.copernicus.org:acpd92027 2023-05-15T13:31:40+02:00 Arctic on the verge of an ozone hole? Kuttippurath, Jayanarayanan Feng, Wuhu Müller, Rolf Kumar, Pankaj Raj, Sarath Gopikrishnan, Gopalakrishna Pillai Roy, Raina 2021-02-24 application/pdf https://doi.org/10.5194/acp-2020-1313 https://acp.copernicus.org/preprints/acp-2020-1313/ eng eng doi:10.5194/acp-2020-1313 https://acp.copernicus.org/preprints/acp-2020-1313/ eISSN: 1680-7324 Text 2021 ftcopernicus https://doi.org/10.5194/acp-2020-1313 2021-03-01T17:22:14Z Severe vortex-wide ozone loss in the Arctic would expose nearly 650 million people and ecosystem to unhealthy ultra-violet radiation levels. Adding to these worries, and extreme weather events as the harbingers of climate change, clear signature of an ozone hole (ozone column values below 220 DU) appeared over the Arctic in March and April 2020. Sporadic occurrences of ozone hole values at different regions of vortex for almost three weeks were found for the first time in the observed history in the Arctic. Furthermore, a record-breaking ozone loss of about 2.0–3.4 ppmv triggered by an unprecedented chlorine activation (1.5–2.2 ppbv) matching to the levels of Antarctic ozone hole conditions was also observed. The polar processing situation led to the first-ever appearance of loss saturation in the Arctic. Apart from these, there were also ozone-mini holes in December 2019 and January 2020 driven by atmospheric dynamics. The large loss in ozone in the colder Arctic winters is intriguing and that demands rigorous monitoring of the region. Our study suggests that the very colder Arctic winters in near future would also very likely to experience even more ozone loss and encounter ozone hole situations, provided the stratospheric chlorine levels still stay high there. Text Antarc* Antarctic Arctic Climate change Copernicus Publications: E-Journals Antarctic Arctic |
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Copernicus Publications: E-Journals |
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ftcopernicus |
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English |
description |
Severe vortex-wide ozone loss in the Arctic would expose nearly 650 million people and ecosystem to unhealthy ultra-violet radiation levels. Adding to these worries, and extreme weather events as the harbingers of climate change, clear signature of an ozone hole (ozone column values below 220 DU) appeared over the Arctic in March and April 2020. Sporadic occurrences of ozone hole values at different regions of vortex for almost three weeks were found for the first time in the observed history in the Arctic. Furthermore, a record-breaking ozone loss of about 2.0–3.4 ppmv triggered by an unprecedented chlorine activation (1.5–2.2 ppbv) matching to the levels of Antarctic ozone hole conditions was also observed. The polar processing situation led to the first-ever appearance of loss saturation in the Arctic. Apart from these, there were also ozone-mini holes in December 2019 and January 2020 driven by atmospheric dynamics. The large loss in ozone in the colder Arctic winters is intriguing and that demands rigorous monitoring of the region. Our study suggests that the very colder Arctic winters in near future would also very likely to experience even more ozone loss and encounter ozone hole situations, provided the stratospheric chlorine levels still stay high there. |
format |
Text |
author |
Kuttippurath, Jayanarayanan Feng, Wuhu Müller, Rolf Kumar, Pankaj Raj, Sarath Gopikrishnan, Gopalakrishna Pillai Roy, Raina |
spellingShingle |
Kuttippurath, Jayanarayanan Feng, Wuhu Müller, Rolf Kumar, Pankaj Raj, Sarath Gopikrishnan, Gopalakrishna Pillai Roy, Raina Arctic on the verge of an ozone hole? |
author_facet |
Kuttippurath, Jayanarayanan Feng, Wuhu Müller, Rolf Kumar, Pankaj Raj, Sarath Gopikrishnan, Gopalakrishna Pillai Roy, Raina |
author_sort |
Kuttippurath, Jayanarayanan |
title |
Arctic on the verge of an ozone hole? |
title_short |
Arctic on the verge of an ozone hole? |
title_full |
Arctic on the verge of an ozone hole? |
title_fullStr |
Arctic on the verge of an ozone hole? |
title_full_unstemmed |
Arctic on the verge of an ozone hole? |
title_sort |
arctic on the verge of an ozone hole? |
publishDate |
2021 |
url |
https://doi.org/10.5194/acp-2020-1313 https://acp.copernicus.org/preprints/acp-2020-1313/ |
geographic |
Antarctic Arctic |
geographic_facet |
Antarctic Arctic |
genre |
Antarc* Antarctic Arctic Climate change |
genre_facet |
Antarc* Antarctic Arctic Climate change |
op_source |
eISSN: 1680-7324 |
op_relation |
doi:10.5194/acp-2020-1313 https://acp.copernicus.org/preprints/acp-2020-1313/ |
op_doi |
https://doi.org/10.5194/acp-2020-1313 |
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1766020022549872640 |