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dc.contributor.author
Hörtnagl, Lukas
dc.contributor.author
Bamberger, Ines
dc.contributor.author
Graus, Martin
dc.contributor.author
Ruuskanen, Taina M.
dc.contributor.author
Schnitzhofer, Ralf
dc.contributor.author
Walser, Mario
dc.contributor.author
Unterberger, Alfred
dc.contributor.author
Hansel, Armin
dc.contributor.author
Wohlfahrt, Georg
dc.date.accessioned
2017-07-19T07:56:37Z
dc.date.available
2017-06-11T17:05:09Z
dc.date.available
2017-07-19T07:56:37Z
dc.date.issued
2014-06-03
dc.identifier.issn
1680-7375
dc.identifier.issn
1680-7367
dc.identifier.other
10.5194/acp-14-5369-2014
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/100278
dc.identifier.doi
10.3929/ethz-b-000100278
dc.description.abstract
An overview of acetaldehyde exchange above a managed temperate mountain grassland in Austria over four growing seasons is presented. The meadow acted as a net source of acetaldehyde in all 4 years, emitting between 7 and 28 mgCm−2 over the whole growing period. The cutting of the meadow resulted in huge acetaldehyde emission bursts of up to 16.5 nmolm−2 s−1 on the day of harvesting or 1 day later. During undisturbed conditions both periods with net uptake and net emissions of acetaldehyde were observed. The bidirectional nature of acetaldehyde fluxes was also reflected by clear diurnal cycles during certain time periods, indicating strong deposition processes before the first cut and emission towards the end of the growing season. The analysis of acetaldehyde compensation points revealed a complex relationship between ambient acetaldehyde mixing ratios and respective fluxes, significantly influenced by multiple environmental parameters and variable throughout the year. As a major finding of this study, we identified both a positive and negative correlation between concentration and flux on a daily scale, where soil temperature and soil water content were the most significant factors in determining the direction of the slope. In turn, this bidirectional relationship on a daily scale resulted in compensation points between 0.40 and 0.54 ppbv, which could be well explained by collected ancillary data. We conclude that in order to model acetaldehyde fluxes at the site in Neustift on a daily scale over longer time periods, it is crucial to know the type of relationship, i.e., the direction of the slope, between mixing ratios and fluxes on a given day.
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
Acetaldehyde exchange above a managed temperate mountain grassland
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution 3.0 Unported
ethz.journal.title
Atmospheric Chemistry and Physics
ethz.journal.volume
14
en_US
ethz.journal.issue
11
en_US
ethz.journal.abbreviated
Atmos. chem. phys.
ethz.pages.start
5369
en_US
ethz.pages.end
5391
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.notes
.
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::02703 - Institut für Agrarwissenschaften / Institute of Agricultural Sciences::03648 - Buchmann, Nina / Buchmann, Nina
en_US
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02350 - Dep. Umweltsystemwissenschaften / Dep. of Environmental Systems Science::02703 - Institut für Agrarwissenschaften / Institute of Agricultural Sciences::03648 - Buchmann, Nina / Buchmann, Nina
ethz.relation.isNewVersionOf
10.3929/ethz-b-000076720
ethz.date.deposited
2017-06-11T17:05:20Z
ethz.source
ECIT
ethz.identifier.importid
imp5936531e9fe2628788
ethz.ecitpid
pub:157204
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2017-07-15T00:24:27Z
ethz.rosetta.lastUpdated
2018-11-05T14:58:49Z
ethz.rosetta.exportRequired
true
ethz.rosetta.versionExported
true
ethz.COinS
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