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dc.contributor.author
Knote, Christoph
dc.contributor.author
Brunner, Dominik
dc.contributor.author
Vogel, Heike
dc.contributor.author
Allan, James
dc.contributor.author
Asmi, Ari
dc.contributor.author
Äijälä, Mikko
dc.contributor.author
Carbone, Samara
dc.contributor.author
Van der Gon, H.D.
dc.contributor.author
Jiménez, José L.
dc.contributor.author
Kiendler-Scharr, Astrid
dc.contributor.author
Mohr, C.
dc.contributor.author
Poulain, Laurent
dc.contributor.author
Prévôt, André S.H.
dc.contributor.author
Swietlicki, Erik
dc.contributor.author
Vogel, Peter
dc.date.accessioned
2019-05-16T10:10:09Z
dc.date.available
2017-06-09T20:02:30Z
dc.date.available
2019-05-16T10:10:09Z
dc.date.issued
2011
dc.identifier.issn
1991-9603
dc.identifier.issn
1991-959X
dc.identifier.other
10.5194/gmd-4-1077-2011
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/47222
dc.identifier.doi
10.3929/ethz-b-000047222
dc.description.abstract
The online-coupled, regional chemistry transport model COSMO-ART is evaluated for periods in all seasons against several measurement datasets to assess its ability to represent gaseous pollutants and ambient aerosol characteristics over the European domain. Measurements used in the comparison include long-term station observations, satellite and ground-based remote sensing products, and complex datasets of aerosol chemical composition and number size distribution from recent field campaigns. This is the first time these comprehensive measurements of aerosol characteristics in Europe are used to evaluate a regional chemistry transport model. We show a detailed analysis of the simulated size-resolved chemical composition under different meteorological conditions. Mean, variability and spatial distribution of the concentrations of O3 and NOx are well reproduced. SO2 is found to be overestimated, simulated PM2.5 and PM10 levels are on average underestimated, as is AOD. We find indications of an overestimation of shipping emissions. Time evolution of aerosol chemical composition is captured, although some biases are found in relative composition. Nitrate aerosol components are on average overestimated, and sulfates underestimated. The accuracy of simulated organics depends strongly on season and location. While strongly underestimated during summer, organic mass is comparable in spring and autumn. We see indications for an overestimated fractional contribution of primary organic matter in urban areas and an underestimation of SOA at many locations. Aerosol number concentrations compare well with measurements for larger size ranges, but overestimations of particle number concentration with factors of 2–5 are found for particles smaller than 50 nm. Size distribution characteristics are often close to measurements, but show discrepancies at polluted sites. Suggestions for further improvement of the modeling system consist of the inclusion of a revised secondary organic aerosols scheme, aqueous-phase chemistry and improved aerosol boundary conditions. Our work sets the basis for subsequent studies of aerosol characteristics and climate impacts with COSMO-ART, and highlights areas where improvements are necessary for current regional modeling systems in general.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
Copernicus Publications
en_US
dc.rights.uri
http://creativecommons.org/licenses/by/3.0/
dc.title
Towards an online-coupled chemistry-climate model: evaluation of trace gases and aerosols in COSMO-ART
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution 3.0 Unported
dc.date.published
2011-12-02
ethz.journal.title
Geoscientific Model Development
ethz.journal.volume
4
en_US
ethz.journal.issue
4
en_US
ethz.journal.abbreviated
Geosci. model dev.
ethz.pages.start
1077
en_US
ethz.pages.end
1102
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.identifier.wos
ethz.publication.place
Göttingen
en_US
ethz.publication.status
published
en_US
ethz.date.deposited
2017-06-09T20:03:21Z
ethz.source
ECIT
ethz.identifier.importid
imp59364f0f130da71826
ethz.ecitpid
pub:77766
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2017-07-14T17:13:25Z
ethz.rosetta.lastUpdated
2019-05-16T10:10:19Z
ethz.rosetta.exportRequired
true
ethz.rosetta.versionExported
true
ethz.COinS
ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.atitle=Towards%20an%20online-coupled%20chemistry-climate%20model:%20evaluation%20of%20trace%20gases%20and%20aerosols%20in%20COSMO-ART&rft.jtitle=Geoscientific%20Model%20Development&rft.date=2011&rft.volume=4&rft.issue=4&rft.spage=1077&rft.epage=1102&rft.issn=1991-9603&1991-959X&rft.au=Knote,%20Christoph&Brunner,%20Dominik&Vogel,%20Heike&Allan,%20James&Asmi,%20Ari&rft.genre=article&
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