Investigation of the behavior of the atmospheric dynamics during occurrences of the ozone hole's secondary effect in southern Brazil
The Antarctic ozone hole (AOH) directly influences the Antarctic region, where its levels can reach values below 220 DU. The temporary depletion of ozone in Antarctica generally occurs between the beginning and middle of August, during the austral spring, and extends to November, when a temporary re...
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ftdoajarticles:oai:doaj.org/article:8115f9e00b9e40b79f43880e5cb393b4 2023-05-15T13:35:16+02:00 Investigation of the behavior of the atmospheric dynamics during occurrences of the ozone hole's secondary effect in southern Brazil G. D. Bittencourt D. K. Pinheiro J. V. Bageston H. Bencherif L. A. Steffenel L. Vaz Peres 2019-11-01T00:00:00Z https://doi.org/10.5194/angeo-37-1049-2019 https://doaj.org/article/8115f9e00b9e40b79f43880e5cb393b4 EN eng Copernicus Publications https://www.ann-geophys.net/37/1049/2019/angeo-37-1049-2019.pdf https://doaj.org/toc/0992-7689 https://doaj.org/toc/1432-0576 doi:10.5194/angeo-37-1049-2019 0992-7689 1432-0576 https://doaj.org/article/8115f9e00b9e40b79f43880e5cb393b4 Annales Geophysicae, Vol 37, Pp 1049-1061 (2019) Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 article 2019 ftdoajarticles https://doi.org/10.5194/angeo-37-1049-2019 2022-12-30T23:05:44Z The Antarctic ozone hole (AOH) directly influences the Antarctic region, where its levels can reach values below 220 DU. The temporary depletion of ozone in Antarctica generally occurs between the beginning and middle of August, during the austral spring, and extends to November, when a temporary reduction in ozone content is observed in a large region over the Antarctic continent. However, masses of ozone-depleted air can break away from the ozone hole and reach mid-latitude regions in a phenomenon known as the secondary effect of the Antarctic ozone hole. The objective of this paper is to show how atmospheric dynamics behave during the occurrence of this type of event, especially in mid-latitude regions, such as southern Brazil, over a 12-year observation period. For the analysis and identification of the events of influence of the AOH on the southern region of Brazil, data from the total ozone column were used from ground-based and satellite experiments, the Brewer Spectrophotometer (MkIII no. 167), and the Ozone Monitoring Instrument (OMI) on the Aura satellite. For the analysis of the stratospheric and tropospheric fields, the ECMWF reanalysis products were used. Thus, 37 events of influence of the AOH that reached the southern region of Brazil were identified for the study period (2006–2017), where the events showed that in approximately 70 % of the cases they occurred after the passage of frontal systems and/or atmospheric blocks over southern Brazil. In addition, the statistical analysis showed a strong influence of the jet stream on mid-latitude regions during the events. Among the 37 identified events, 92 % occurred in the presence of the subtropical and/or polar jet stream over the region of study, possibly explaining the exchange of air masses of ozone deficient in the upper troposphere–lower stratosphere (UT–LS) region. Article in Journal/Newspaper Antarc* Antarctic Antarctica Directory of Open Access Journals: DOAJ Articles Antarctic The Antarctic Austral Annales Geophysicae 37 6 1049 1061 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
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ftdoajarticles |
language |
English |
topic |
Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 |
spellingShingle |
Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 G. D. Bittencourt D. K. Pinheiro J. V. Bageston H. Bencherif L. A. Steffenel L. Vaz Peres Investigation of the behavior of the atmospheric dynamics during occurrences of the ozone hole's secondary effect in southern Brazil |
topic_facet |
Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 |
description |
The Antarctic ozone hole (AOH) directly influences the Antarctic region, where its levels can reach values below 220 DU. The temporary depletion of ozone in Antarctica generally occurs between the beginning and middle of August, during the austral spring, and extends to November, when a temporary reduction in ozone content is observed in a large region over the Antarctic continent. However, masses of ozone-depleted air can break away from the ozone hole and reach mid-latitude regions in a phenomenon known as the secondary effect of the Antarctic ozone hole. The objective of this paper is to show how atmospheric dynamics behave during the occurrence of this type of event, especially in mid-latitude regions, such as southern Brazil, over a 12-year observation period. For the analysis and identification of the events of influence of the AOH on the southern region of Brazil, data from the total ozone column were used from ground-based and satellite experiments, the Brewer Spectrophotometer (MkIII no. 167), and the Ozone Monitoring Instrument (OMI) on the Aura satellite. For the analysis of the stratospheric and tropospheric fields, the ECMWF reanalysis products were used. Thus, 37 events of influence of the AOH that reached the southern region of Brazil were identified for the study period (2006–2017), where the events showed that in approximately 70 % of the cases they occurred after the passage of frontal systems and/or atmospheric blocks over southern Brazil. In addition, the statistical analysis showed a strong influence of the jet stream on mid-latitude regions during the events. Among the 37 identified events, 92 % occurred in the presence of the subtropical and/or polar jet stream over the region of study, possibly explaining the exchange of air masses of ozone deficient in the upper troposphere–lower stratosphere (UT–LS) region. |
format |
Article in Journal/Newspaper |
author |
G. D. Bittencourt D. K. Pinheiro J. V. Bageston H. Bencherif L. A. Steffenel L. Vaz Peres |
author_facet |
G. D. Bittencourt D. K. Pinheiro J. V. Bageston H. Bencherif L. A. Steffenel L. Vaz Peres |
author_sort |
G. D. Bittencourt |
title |
Investigation of the behavior of the atmospheric dynamics during occurrences of the ozone hole's secondary effect in southern Brazil |
title_short |
Investigation of the behavior of the atmospheric dynamics during occurrences of the ozone hole's secondary effect in southern Brazil |
title_full |
Investigation of the behavior of the atmospheric dynamics during occurrences of the ozone hole's secondary effect in southern Brazil |
title_fullStr |
Investigation of the behavior of the atmospheric dynamics during occurrences of the ozone hole's secondary effect in southern Brazil |
title_full_unstemmed |
Investigation of the behavior of the atmospheric dynamics during occurrences of the ozone hole's secondary effect in southern Brazil |
title_sort |
investigation of the behavior of the atmospheric dynamics during occurrences of the ozone hole's secondary effect in southern brazil |
publisher |
Copernicus Publications |
publishDate |
2019 |
url |
https://doi.org/10.5194/angeo-37-1049-2019 https://doaj.org/article/8115f9e00b9e40b79f43880e5cb393b4 |
geographic |
Antarctic The Antarctic Austral |
geographic_facet |
Antarctic The Antarctic Austral |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_source |
Annales Geophysicae, Vol 37, Pp 1049-1061 (2019) |
op_relation |
https://www.ann-geophys.net/37/1049/2019/angeo-37-1049-2019.pdf https://doaj.org/toc/0992-7689 https://doaj.org/toc/1432-0576 doi:10.5194/angeo-37-1049-2019 0992-7689 1432-0576 https://doaj.org/article/8115f9e00b9e40b79f43880e5cb393b4 |
op_doi |
https://doi.org/10.5194/angeo-37-1049-2019 |
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Annales Geophysicae |
container_volume |
37 |
container_issue |
6 |
container_start_page |
1049 |
op_container_end_page |
1061 |
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1766063620843634688 |