dc.contributor.author
Langematz, Ulrike
dc.contributor.author
Schmidt, Franziska
dc.contributor.author
Kunze, Markus
dc.contributor.author
Bodeker, Gregory E.
dc.contributor.author
Braesicke, Peter
dc.date.accessioned
2018-06-08T10:40:07Z
dc.date.available
2017-02-20T09:18:55.055Z
dc.identifier.uri
https://refubium.fu-berlin.de/handle/fub188/20852
dc.identifier.uri
http://dx.doi.org/10.17169/refubium-24151
dc.description.abstract
Abstract. 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 ODSs.
en
dc.rights.uri
http://creativecommons.org/licenses/by/3.0/
dc.subject.ddc
500 Naturwissenschaften und Mathematik::550 Geowissenschaften, Geologie
dc.title
Antarctic ozone depletion between 1960 and 1980 in observations and
chemistry–climate model simulation
dc.type
Wissenschaftlicher Artikel
dcterms.bibliographicCitation
Atmos. Chem. Phys. - 16 (2016), S. 15619-15627
dcterms.bibliographicCitation.doi
10.5194/acp-16-15619-2016
dcterms.bibliographicCitation.url
http://www.atmos-chem-phys.net/16/15619/2016/
refubium.affiliation
Geowissenschaften
de
refubium.mycore.fudocsId
FUDOCS_document_000000026370
refubium.note.author
Der Artikel wurde in einer reinen Open-Access-Zeitschrift publiziert.
refubium.resourceType.isindependentpub
no
refubium.mycore.derivateId
FUDOCS_derivate_000000007713
dcterms.accessRights.openaire
open access