Antarctic ozone depletion between 1960 and 1980 in observations and chemistry-climate model simulations
The year 1980 has often been used as a benchmark for the return of Antarctic ozone to conditions assumed to be unaffected by emissions of ozone-depleting substances (ODSs), implying that anthropogenic ozone depletion in Antarctica started around 1980. Here, the extent of anthropogenically driven Ant...
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ftubkarlsruhe:oai:EVASTAR-Karlsruhe.de:1000065664 2023-05-15T13:44:40+02:00 Antarctic ozone depletion between 1960 and 1980 in observations and chemistry-climate model simulations Langematz, U. Schmidt, F. Kunze, M. Bodeker, G. E. Braesicke, P. 2017-02-10 application/pdf https://publikationen.bibliothek.kit.edu/1000065664 https://publikationen.bibliothek.kit.edu/1000065664/4295562 https://doi.org/10.5445/IR/1000065664 http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:swb:90-656644 eng eng European Geosciences Union info:eu-repo/semantics/altIdentifier/wos/000391555300001 info:eu-repo/semantics/altIdentifier/doi/10.5194/acp-16-15619-2016 info:eu-repo/semantics/altIdentifier/issn/1680-7316 info:eu-repo/semantics/altIdentifier/issn/1680-7324 https://publikationen.bibliothek.kit.edu/1000065664 https://publikationen.bibliothek.kit.edu/1000065664/4295562 https://doi.org/10.5445/IR/1000065664 http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:swb:90-656644 https://creativecommons.org/licenses/by/3.0/de/ info:eu-repo/semantics/openAccess CC-BY Atmospheric chemistry and physics, 16 (24), 15619-15627 ISSN: 1680-7316, 1680-7324 ddc:550 Earth sciences info:eu-repo/classification/ddc/550 doc-type:article Text info:eu-repo/semantics/article article info:eu-repo/semantics/publishedVersion 2017 ftubkarlsruhe https://doi.org/10.5445/IR/1000065664 https://doi.org/10.5194/acp-16-15619-2016 2022-03-23T18:21:16Z The year 1980 has often been used as a benchmark for the return of Antarctic ozone to conditions assumed to be unaffected by emissions of ozone-depleting substances (ODSs), implying that anthropogenic ozone depletion in Antarctica started around 1980. Here, the extent of anthropogenically driven Antarctic ozone depletion prior to 1980 is examined using output from transient chemistry– climate model (CCM) simulations from 1960 to 2000 with prescribed changes of ozone-depleting substance concentrations in conjunction with observations. A regression model is used to attribute CCM modelled and observed changes in Antarctic total column ozone to halogen-driven chemistry prior to 1980. Wintertime Antarctic ozone is strongly affected by dynamical processes that vary in amplitude from year to year and from model to model. However, when the dynamical and chemical impacts on ozone are separated, all models consistently show a long-term, halogen-induced negative trend in Antarctic ozone from 1960 to 1980. The anthropogenically driven ozone loss from 1960 to 1980 ranges between 26.4 ±3.4 and 49.8 ±6.2% of the total anthropogenic ozone depletion from 1960 to 2000. An even stronger ozone decline of 56.4 ±6.8% was estimated from ozone observations. This analysis of the observations and simulations from 17 CCMs clarifies that while the return of Antarctic ozone to 1980 values remains a valid milestone, achieving that milestone is not indicative of full recovery of the Antarctic ozone layer from the effects of ... Article in Journal/Newspaper Antarc* Antarctic Antarctica KITopen (Karlsruhe Institute of Technologie) Antarctic The Antarctic |
institution |
Open Polar |
collection |
KITopen (Karlsruhe Institute of Technologie) |
op_collection_id |
ftubkarlsruhe |
language |
English |
topic |
ddc:550 Earth sciences info:eu-repo/classification/ddc/550 |
spellingShingle |
ddc:550 Earth sciences info:eu-repo/classification/ddc/550 Langematz, U. Schmidt, F. Kunze, M. Bodeker, G. E. Braesicke, P. Antarctic ozone depletion between 1960 and 1980 in observations and chemistry-climate model simulations |
topic_facet |
ddc:550 Earth sciences info:eu-repo/classification/ddc/550 |
description |
The year 1980 has often been used as a benchmark for the return of Antarctic ozone to conditions assumed to be unaffected by emissions of ozone-depleting substances (ODSs), implying that anthropogenic ozone depletion in Antarctica started around 1980. Here, the extent of anthropogenically driven Antarctic ozone depletion prior to 1980 is examined using output from transient chemistry– climate model (CCM) simulations from 1960 to 2000 with prescribed changes of ozone-depleting substance concentrations in conjunction with observations. A regression model is used to attribute CCM modelled and observed changes in Antarctic total column ozone to halogen-driven chemistry prior to 1980. Wintertime Antarctic ozone is strongly affected by dynamical processes that vary in amplitude from year to year and from model to model. However, when the dynamical and chemical impacts on ozone are separated, all models consistently show a long-term, halogen-induced negative trend in Antarctic ozone from 1960 to 1980. The anthropogenically driven ozone loss from 1960 to 1980 ranges between 26.4 ±3.4 and 49.8 ±6.2% of the total anthropogenic ozone depletion from 1960 to 2000. An even stronger ozone decline of 56.4 ±6.8% was estimated from ozone observations. This analysis of the observations and simulations from 17 CCMs clarifies that while the return of Antarctic ozone to 1980 values remains a valid milestone, achieving that milestone is not indicative of full recovery of the Antarctic ozone layer from the effects of ... |
format |
Article in Journal/Newspaper |
author |
Langematz, U. Schmidt, F. Kunze, M. Bodeker, G. E. Braesicke, P. |
author_facet |
Langematz, U. Schmidt, F. Kunze, M. Bodeker, G. E. Braesicke, P. |
author_sort |
Langematz, U. |
title |
Antarctic ozone depletion between 1960 and 1980 in observations and chemistry-climate model simulations |
title_short |
Antarctic ozone depletion between 1960 and 1980 in observations and chemistry-climate model simulations |
title_full |
Antarctic ozone depletion between 1960 and 1980 in observations and chemistry-climate model simulations |
title_fullStr |
Antarctic ozone depletion between 1960 and 1980 in observations and chemistry-climate model simulations |
title_full_unstemmed |
Antarctic ozone depletion between 1960 and 1980 in observations and chemistry-climate model simulations |
title_sort |
antarctic ozone depletion between 1960 and 1980 in observations and chemistry-climate model simulations |
publisher |
European Geosciences Union |
publishDate |
2017 |
url |
https://publikationen.bibliothek.kit.edu/1000065664 https://publikationen.bibliothek.kit.edu/1000065664/4295562 https://doi.org/10.5445/IR/1000065664 http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:swb:90-656644 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_source |
Atmospheric chemistry and physics, 16 (24), 15619-15627 ISSN: 1680-7316, 1680-7324 |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/000391555300001 info:eu-repo/semantics/altIdentifier/doi/10.5194/acp-16-15619-2016 info:eu-repo/semantics/altIdentifier/issn/1680-7316 info:eu-repo/semantics/altIdentifier/issn/1680-7324 https://publikationen.bibliothek.kit.edu/1000065664 https://publikationen.bibliothek.kit.edu/1000065664/4295562 https://doi.org/10.5445/IR/1000065664 http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:swb:90-656644 |
op_rights |
https://creativecommons.org/licenses/by/3.0/de/ info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5445/IR/1000065664 https://doi.org/10.5194/acp-16-15619-2016 |
_version_ |
1766204754680086528 |