Near-Complete Local Reduction of Arctic Stratospheric Ozone by Severe Chemical Loss in Spring 2020
In the Antarctic ozone hole, ozone mixing ratios have been decreasing to extremely low values of 0.01–0.1 ppm in nearly all spring seasons since the late 1980s, corresponding to 95–99% local chemical loss. In contrast, Arctic ozone loss has been much more limited and mixing ratios have never before...
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ftdatacite:10.23689/fidgeo-4980 2023-05-15T13:44:15+02:00 Near-Complete Local Reduction of Arctic Stratospheric Ozone by Severe Chemical Loss in Spring 2020 Wohltmann, I. Von Der Gathen, P. Lehmann, R. Maturilli, M. Deckelmann, H. Manney, G. L. Davies, J. Tarasick, D. Jepsen, N. Kivi, R. Lyall, N. Rex, M. 2020 https://dx.doi.org/10.23689/fidgeo-4980 https://e-docs.geo-leo.de/handle/11858/9326 en eng FID GEO Text Article article-journal ScholarlyArticle 2020 ftdatacite https://doi.org/10.23689/fidgeo-4980 2021-11-05T12:55:41Z In the Antarctic ozone hole, ozone mixing ratios have been decreasing to extremely low values of 0.01–0.1 ppm in nearly all spring seasons since the late 1980s, corresponding to 95–99% local chemical loss. In contrast, Arctic ozone loss has been much more limited and mixing ratios have never before fallen below 0.5 ppm. In Arctic spring 2020, however, ozonesonde measurements in the most depleted parts of the polar vortex show a highly depleted layer, with ozone loss averaged over sondes peaking at 93% at 18 km. Typical minimum mixing ratios of 0.2 ppm were observed, with individual profiles showing values as low as 0.13 ppm (96% loss). The reason for the unprecedented chemical loss was an unusually strong, long-lasting, and cold polar vortex, showing that for individual winters the effect of the slow decline of ozone-depleting substances on ozone depletion may be counteracted by low temperatures. Text Antarc* Antarctic Arctic DataCite Metadata Store (German National Library of Science and Technology) Antarctic Arctic The Antarctic |
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DataCite Metadata Store (German National Library of Science and Technology) |
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ftdatacite |
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English |
description |
In the Antarctic ozone hole, ozone mixing ratios have been decreasing to extremely low values of 0.01–0.1 ppm in nearly all spring seasons since the late 1980s, corresponding to 95–99% local chemical loss. In contrast, Arctic ozone loss has been much more limited and mixing ratios have never before fallen below 0.5 ppm. In Arctic spring 2020, however, ozonesonde measurements in the most depleted parts of the polar vortex show a highly depleted layer, with ozone loss averaged over sondes peaking at 93% at 18 km. Typical minimum mixing ratios of 0.2 ppm were observed, with individual profiles showing values as low as 0.13 ppm (96% loss). The reason for the unprecedented chemical loss was an unusually strong, long-lasting, and cold polar vortex, showing that for individual winters the effect of the slow decline of ozone-depleting substances on ozone depletion may be counteracted by low temperatures. |
format |
Text |
author |
Wohltmann, I. Von Der Gathen, P. Lehmann, R. Maturilli, M. Deckelmann, H. Manney, G. L. Davies, J. Tarasick, D. Jepsen, N. Kivi, R. Lyall, N. Rex, M. |
spellingShingle |
Wohltmann, I. Von Der Gathen, P. Lehmann, R. Maturilli, M. Deckelmann, H. Manney, G. L. Davies, J. Tarasick, D. Jepsen, N. Kivi, R. Lyall, N. Rex, M. Near-Complete Local Reduction of Arctic Stratospheric Ozone by Severe Chemical Loss in Spring 2020 |
author_facet |
Wohltmann, I. Von Der Gathen, P. Lehmann, R. Maturilli, M. Deckelmann, H. Manney, G. L. Davies, J. Tarasick, D. Jepsen, N. Kivi, R. Lyall, N. Rex, M. |
author_sort |
Wohltmann, I. |
title |
Near-Complete Local Reduction of Arctic Stratospheric Ozone by Severe Chemical Loss in Spring 2020 |
title_short |
Near-Complete Local Reduction of Arctic Stratospheric Ozone by Severe Chemical Loss in Spring 2020 |
title_full |
Near-Complete Local Reduction of Arctic Stratospheric Ozone by Severe Chemical Loss in Spring 2020 |
title_fullStr |
Near-Complete Local Reduction of Arctic Stratospheric Ozone by Severe Chemical Loss in Spring 2020 |
title_full_unstemmed |
Near-Complete Local Reduction of Arctic Stratospheric Ozone by Severe Chemical Loss in Spring 2020 |
title_sort |
near-complete local reduction of arctic stratospheric ozone by severe chemical loss in spring 2020 |
publisher |
FID GEO |
publishDate |
2020 |
url |
https://dx.doi.org/10.23689/fidgeo-4980 https://e-docs.geo-leo.de/handle/11858/9326 |
geographic |
Antarctic Arctic The Antarctic |
geographic_facet |
Antarctic Arctic The Antarctic |
genre |
Antarc* Antarctic Arctic |
genre_facet |
Antarc* Antarctic Arctic |
op_doi |
https://doi.org/10.23689/fidgeo-4980 |
_version_ |
1766199453081927680 |