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dc.contributor.author
Rohrer, Marco
dc.contributor.author
Croci-Maspoli, Mischa
dc.contributor.author
Appenzeller, Christof
dc.date.accessioned
2019-10-11T15:13:19Z
dc.date.available
2017-06-12T20:11:35Z
dc.date.available
2019-10-11T15:13:19Z
dc.date.issued
2017-02-13
dc.identifier.issn
0941-2948
dc.identifier.issn
1610-1227
dc.identifier.other
10.1127/metz/2016/0681
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/129189
dc.identifier.doi
10.3929/ethz-b-000129189
dc.description.abstract
The frequency of circulation types over the Alpine region is explored using 20 different global and regional climate model chains. The projected changes in these circulation types are investigated for the 21st century using the SRES A1B scenario. The multi-model approach relies on the climate models from the ENSEMBLES project and circulation type classifications provided by the COST Action 733. For the latter, the two circulation type classifications GWT (Grosswetter-types) and CAP (Cluster Analysis of Principal components) are selected. GWT is applied to sea level pressure and geopotential height at 500 hPa whereas CAP is applied to sea level pressure. Overall, the ensemble of climate models captures the frequency of individual circulation types well, as shown by the comparison of circulation types from climate models and re-analysis data between 1980 and 2009. Discrepancies occur during winter (DJF) when westerlies are overestimated both at the sea level and at the 500 hPa geopotential height level. The model spread is largest during summer. The frequency of circulation types is simulated best during spring and autumn irrespective of the applied circulation type classification.The analysis of circulation types in the climate projections indicates that in winter easterlies are expected to decrease mostly at the benefit of westerlies until the end of the 21st century. In summer projected changes depend on the height level considered. At sea level westerlies are projected to decrease while easterlies increase markedly in their frequency. This change is not occurring on the 500 hPa geopotential height level.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
Schweizerbart
en_US
dc.rights.uri
http://creativecommons.org/licenses/by-nc/3.0/
dc.subject
Synoptic climatology
en_US
dc.subject
Circulation type classification
en_US
dc.subject
climate change
en_US
dc.subject
COST 733
en_US
dc.subject
Alpine climate
en_US
dc.title
Climate change and circulation types in the Alpine region
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution-NonCommercial 3.0 Unported
dc.date.published
2016-09-09
ethz.journal.title
Meteorologische Zeitschrift
ethz.journal.volume
26
en_US
ethz.journal.issue
1
en_US
ethz.journal.abbreviated
Meteorol. Z. (Braunschw.)
ethz.pages.start
83
en_US
ethz.pages.end
92
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.identifier.wos
ethz.identifier.scopus
ethz.identifier.nebis
010842798
ethz.publication.place
Stuttgart
en_US
ethz.publication.status
published
en_US
ethz.date.deposited
2017-06-12T20:12:19Z
ethz.source
ECIT
ethz.identifier.importid
imp59365550c789c36478
ethz.ecitpid
pub:192150
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2017-07-17T09:04:01Z
ethz.rosetta.lastUpdated
2019-10-11T15:13:31Z
ethz.rosetta.versionExported
true
ethz.COinS
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