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dc.contributor.author
Hoyle, Christopher R.
dc.contributor.author
Engel, Ines
dc.contributor.author
Luo, Beiping P.
dc.contributor.author
Pitts, Michael C.
dc.contributor.author
Poole, Lamont R.
dc.contributor.author
Grooß, Jens-Uwe
dc.contributor.author
Peter, Thomas
dc.date.accessioned
2019-09-09T08:46:12Z
dc.date.available
2017-06-10T21:55:58Z
dc.date.available
2019-09-09T08:46:12Z
dc.date.issued
2013
dc.identifier.issn
1680-7375
dc.identifier.issn
1680-7367
dc.identifier.other
10.5194/acp-13-9577-2013
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/72349
dc.identifier.doi
10.3929/ethz-b-000072349
dc.description.abstract
Satellite-based observations during the Arctic winter of 2009/2010 provide firm evidence that, in contrast to the current understanding, the nucleation of nitric acid trihydrate (NAT) in the polar stratosphere does not only occur on preexisting ice particles. In order to explain the NAT clouds observed over the Arctic in mid-December 2009, a heterogeneous nucleation mechanism is required, occurring via immersion freezing on the surface of solid particles, likely of meteoritic origin. For the first time, a detailed microphysical modelling of this NAT formation pathway has been carried out. Heterogeneous NAT formation was calculated along more than sixty thousand trajectories, ending at Cloud Aerosol Lidar with Orthogonal Polarization (CALIOP) observation points. Comparing the optical properties of the modelled NAT with these observations enabled a thorough validation of a newly developed NAT nucleation parameterisation, which has been built into the Zurich Optical and Microphysical box Model (ZOMM). The parameterisation is based on active site theory, is simple to implement in models and provides substantial advantages over previous approaches which involved a constant rate of NAT nucleation in a given volume of air. It is shown that the new method is capable of reproducing observed polar stratospheric clouds (PSCs) very well, despite the varied conditions experienced by air parcels travelling along the different trajectories. In a companion paper, ZOMM is applied to a later period of the winter, when ice PSCs are also present, and it is shown that the observed PSCs are also represented extremely well under these conditions.
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
Heterogeneous formation of polar stratospheric clouds – Part 1: Nucleation of nitric acid trihydrate (NAT)
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution 3.0 Unported
dc.date.published
2013-09-27
ethz.journal.title
Atmospheric Chemistry and Physics
ethz.journal.volume
13
en_US
ethz.journal.issue
18
en_US
ethz.journal.abbreviated
Atmos. chem. phys.
ethz.pages.start
9577
en_US
ethz.pages.end
9595
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.notes
.
en_US
ethz.identifier.wos
ethz.identifier.scopus
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::03517 - Peter, Thomas / Peter, Thomas
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::03517 - Peter, Thomas / Peter, Thomas
ethz.date.deposited
2017-06-10T21:57:26Z
ethz.source
ECIT
ethz.identifier.importid
imp59365109e445e52003
ethz.ecitpid
pub:114660
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2017-08-01T16:46:52Z
ethz.rosetta.lastUpdated
2019-09-09T08:46:25Z
ethz.rosetta.versionExported
true
ethz.COinS
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