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dc.contributor.author
Lohmann, Ulrike
dc.contributor.author
Stier, Philip
dc.contributor.author
Hoose, Corinna
dc.contributor.author
Ferrachat, Sylvaine
dc.contributor.author
Kloster, S.
dc.contributor.author
Roeckner, Erich
dc.contributor.author
Zhang, J.
dc.date.accessioned
2019-09-09T08:38:41Z
dc.date.available
2017-06-08T17:43:48Z
dc.date.available
2018-09-20T08:54:15Z
dc.date.available
2019-09-09T08:38:41Z
dc.date.issued
2007
dc.identifier.issn
1680-7375
dc.identifier.issn
1680-7367
dc.identifier.other
10.5194/acp-7-3425-2007
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/7331
dc.identifier.doi
10.3929/ethz-b-000007331
dc.description.abstract
The double-moment cloud microphysics scheme from ECHAM4 that predicts both the mass mixing ratios and number concentrations of cloud droplets and ice crystals has been coupled to the size-resolved aerosol scheme ECHAM5-HAM. ECHAM5-HAM predicts the aerosol mass, number concentrations and mixing state. The simulated liquid, ice and total water content and the cloud droplet and ice crystal number concentrations as a function of temperature in stratiform mixed-phase clouds between 0 and −35° C agree much better with aircraft observations in the ECHAM5 simulations. ECHAM5 performs better because more realistic aerosol concentrations are available for cloud droplet nucleation and because the Bergeron-Findeisen process is parameterized as being more efficient. The total anthropogenic aerosol effect includes the direct, semi-direct and indirect effects and is defined as the difference in the top-of-the-atmosphere net radiation between present-day and pre-industrial times. It amounts to −1.9 W m−2 in ECHAM5, when a relative humidity dependent cloud cover scheme and aerosol emissions representative for the years 1750 and 2000 from the AeroCom emission inventory are used. The contribution of the cloud albedo effect amounts to −0.7 W m−2. The total anthropogenic aerosol effect is larger when either a statistical cloud cover scheme or a different aerosol emission inventory are employed because the cloud lifetime effect increases.
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-nc-sa/2.5/
dc.title
Cloud microphysics and aerosol indirect effects in the global climate model ECHAM5-HAM
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Generic
dc.date.published
2007-07-02
ethz.journal.title
Atmospheric Chemistry and Physics
ethz.journal.volume
7
en_US
ethz.journal.issue
13
en_US
ethz.journal.abbreviated
Atmos. chem. phys.
ethz.pages.start
3425
en_US
ethz.pages.end
3446
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.identifier.wos
ethz.identifier.nebis
004294181
ethz.publication.place
Göttingen
en_US
ethz.publication.status
published
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02350 - Dep. Umweltsystemwissenschaften / Dep. of Environmental Systems Science::02717 - Institut für Atmosphäre und Klima / Inst. Atmospheric and Climate Science::03690 - Lohmann, Ulrike / Lohmann, Ulrike
en_US
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02350 - Dep. Umweltsystemwissenschaften / Dep. of Environmental Systems Science::02717 - Institut für Atmosphäre und Klima / Inst. Atmospheric and Climate Science::03690 - Lohmann, Ulrike / Lohmann, Ulrike
ethz.date.deposited
2017-06-08T17:43:55Z
ethz.source
ECIT
ethz.identifier.importid
imp59364bb12e48874875
ethz.ecitpid
pub:17862
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2017-07-26T06:43:05Z
ethz.rosetta.lastUpdated
2019-09-09T08:38:53Z
ethz.rosetta.versionExported
true
ethz.COinS
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