The Antarctic ozone hole during 2017
We review the 2017 Antarctic ozone hole, making use of various meteorologicalreanalyses, and in-situ, satellite and ground-based measurements of ozone andrelated trace gases, and ground-based measurements of ultraviolet radiation. The2017 ozone hole was associated with relatively high ozone concentr...
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2020
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Online Access: | https://eprints.utas.edu.au/39993/ https://eprints.utas.edu.au/39993/2/134273%20-%20The%20Antarctic%20ozone%20hole%20during%202017.pdf |
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ftunivtasmania:oai:eprints.utas.edu.au:39993 2023-05-15T13:42:39+02:00 The Antarctic ozone hole during 2017 Klekociuk, AR Tully, MB Krummel, PB Evtushevsky, O Kravchenko, V Henderson, SI Alexander, SP Querel, RR Nichol, S Smale, D Milinevsky, GP Grytsai, A Fraser, PJ Xiangdong, Z Gies, HP Schofield, R Shanklin, JD 2020 application/pdf https://eprints.utas.edu.au/39993/ https://eprints.utas.edu.au/39993/2/134273%20-%20The%20Antarctic%20ozone%20hole%20during%202017.pdf en eng Australia Bureau of Meteorology https://eprints.utas.edu.au/39993/2/134273%20-%20The%20Antarctic%20ozone%20hole%20during%202017.pdf Klekociuk, AR, Tully, MB, Krummel, PB, Evtushevsky, O, Kravchenko, V, Henderson, SI, Alexander, SP, Querel, RR, Nichol, S, Smale, D, Milinevsky, GP, Grytsai, A, Fraser, PJ, Xiangdong, Z, Gies, HP, Schofield, R and Shanklin, JD 2020 , 'The Antarctic ozone hole during 2017' , Journal of Southern Hemisphere Earth Systems Science, vol. 69, no. 1 , pp. 29-51 , doi:10.1071/ES19019 <http://dx.doi.org/10.1071/ES19019>. ozone stratosphere Article PeerReviewed 2020 ftunivtasmania https://doi.org/10.1071/ES19019 2022-01-17T23:18:22Z We review the 2017 Antarctic ozone hole, making use of various meteorologicalreanalyses, and in-situ, satellite and ground-based measurements of ozone andrelated trace gases, and ground-based measurements of ultraviolet radiation. The2017 ozone hole was associated with relatively high ozone concentrations overthe Antarctic region compared to other years, and our analysis ranks it in thesmallest 25% of observed ozone holes in terms of size. The severity of stratosphericozone loss was comparable with that which occurred in 2002 (when thestratospheric vortex exhibited an unprecedented major warming) and most yearsprior to 1989 (which were early in the development of the ozone hole). Disturbancesto the polar vortex in August and September that were associated with intervalsof anomalous planetary wave activity resulted in significant erosion of thepolar vortex and the mitigation of the overall level of ozone depletion. The enhancedwave activity was favoured by below-average westerly winds at highsouthern latitudes during winter, and the prevailing easterly phase of the Quasi-Biennial Oscillation (QBO). Using proxy information on the chemical makeup ofthe polar vortex based on analysis of nitrous oxide and the likely influence of theQBO, we suggest that the concentration of inorganic chlorine, which plays a keyrole in ozone loss, was likely similar to 2014 and 2016, when the ozone hole waslarger than in 2017. Overall, we find that the overall severity of Antarctic ozoneloss in 2017 was largely dictated by the timing of the disturbances to the polarvortex rather than interannual variability in the level of inorganic chlorine. Article in Journal/Newspaper Antarc* Antarctic University of Tasmania: UTas ePrints Antarctic The Antarctic Journal of Southern Hemisphere Earth Systems Science 69 1 29 |
institution |
Open Polar |
collection |
University of Tasmania: UTas ePrints |
op_collection_id |
ftunivtasmania |
language |
English |
topic |
ozone stratosphere |
spellingShingle |
ozone stratosphere Klekociuk, AR Tully, MB Krummel, PB Evtushevsky, O Kravchenko, V Henderson, SI Alexander, SP Querel, RR Nichol, S Smale, D Milinevsky, GP Grytsai, A Fraser, PJ Xiangdong, Z Gies, HP Schofield, R Shanklin, JD The Antarctic ozone hole during 2017 |
topic_facet |
ozone stratosphere |
description |
We review the 2017 Antarctic ozone hole, making use of various meteorologicalreanalyses, and in-situ, satellite and ground-based measurements of ozone andrelated trace gases, and ground-based measurements of ultraviolet radiation. The2017 ozone hole was associated with relatively high ozone concentrations overthe Antarctic region compared to other years, and our analysis ranks it in thesmallest 25% of observed ozone holes in terms of size. The severity of stratosphericozone loss was comparable with that which occurred in 2002 (when thestratospheric vortex exhibited an unprecedented major warming) and most yearsprior to 1989 (which were early in the development of the ozone hole). Disturbancesto the polar vortex in August and September that were associated with intervalsof anomalous planetary wave activity resulted in significant erosion of thepolar vortex and the mitigation of the overall level of ozone depletion. The enhancedwave activity was favoured by below-average westerly winds at highsouthern latitudes during winter, and the prevailing easterly phase of the Quasi-Biennial Oscillation (QBO). Using proxy information on the chemical makeup ofthe polar vortex based on analysis of nitrous oxide and the likely influence of theQBO, we suggest that the concentration of inorganic chlorine, which plays a keyrole in ozone loss, was likely similar to 2014 and 2016, when the ozone hole waslarger than in 2017. Overall, we find that the overall severity of Antarctic ozoneloss in 2017 was largely dictated by the timing of the disturbances to the polarvortex rather than interannual variability in the level of inorganic chlorine. |
format |
Article in Journal/Newspaper |
author |
Klekociuk, AR Tully, MB Krummel, PB Evtushevsky, O Kravchenko, V Henderson, SI Alexander, SP Querel, RR Nichol, S Smale, D Milinevsky, GP Grytsai, A Fraser, PJ Xiangdong, Z Gies, HP Schofield, R Shanklin, JD |
author_facet |
Klekociuk, AR Tully, MB Krummel, PB Evtushevsky, O Kravchenko, V Henderson, SI Alexander, SP Querel, RR Nichol, S Smale, D Milinevsky, GP Grytsai, A Fraser, PJ Xiangdong, Z Gies, HP Schofield, R Shanklin, JD |
author_sort |
Klekociuk, AR |
title |
The Antarctic ozone hole during 2017 |
title_short |
The Antarctic ozone hole during 2017 |
title_full |
The Antarctic ozone hole during 2017 |
title_fullStr |
The Antarctic ozone hole during 2017 |
title_full_unstemmed |
The Antarctic ozone hole during 2017 |
title_sort |
antarctic ozone hole during 2017 |
publisher |
Australia Bureau of Meteorology |
publishDate |
2020 |
url |
https://eprints.utas.edu.au/39993/ https://eprints.utas.edu.au/39993/2/134273%20-%20The%20Antarctic%20ozone%20hole%20during%202017.pdf |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
https://eprints.utas.edu.au/39993/2/134273%20-%20The%20Antarctic%20ozone%20hole%20during%202017.pdf Klekociuk, AR, Tully, MB, Krummel, PB, Evtushevsky, O, Kravchenko, V, Henderson, SI, Alexander, SP, Querel, RR, Nichol, S, Smale, D, Milinevsky, GP, Grytsai, A, Fraser, PJ, Xiangdong, Z, Gies, HP, Schofield, R and Shanklin, JD 2020 , 'The Antarctic ozone hole during 2017' , Journal of Southern Hemisphere Earth Systems Science, vol. 69, no. 1 , pp. 29-51 , doi:10.1071/ES19019 <http://dx.doi.org/10.1071/ES19019>. |
op_doi |
https://doi.org/10.1071/ES19019 |
container_title |
Journal of Southern Hemisphere Earth Systems Science |
container_volume |
69 |
container_issue |
1 |
container_start_page |
29 |
_version_ |
1766170854440304640 |