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dc.contributor.author
Tuzson, Béla
dc.contributor.author
Hiller, Rebecca V.
dc.contributor.author
Zeyer, Kerstin
dc.contributor.author
Eugster, Werner
dc.contributor.author
Neftel, Albrecht
dc.contributor.author
Ammann, Christof
dc.contributor.author
Emmenegger, Lukas
dc.date.accessioned
2019-09-06T13:52:16Z
dc.date.available
2017-06-09T06:39:49Z
dc.date.available
2019-09-06T13:52:16Z
dc.date.issued
2010
dc.identifier.issn
1867-1381
dc.identifier.issn
1867-8548
dc.identifier.other
10.5194/amtd-3-2961-2010
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/25092
dc.identifier.doi
10.3929/ethz-b-000025092
dc.description.abstract
Fast response optical analyzers based on laserabsorption spectroscopy are the preferred tools to measurefield-scale mixing ratios and fluxes of a range of trace gases.Several state-of-the-art instruments have become commer-cially available and are gaining in popularity. This paperaims for a critical field evaluation and intercomparison oftwo compact, cryogen-free and fast response instruments: aquantum cascade laser based absorption spectrometer fromAerodyne Research, Inc., and an off-axis integrated cavityoutput spectrometer from Los Gatos Research, Inc. In thispaper, both analyzers are characterized with respect to preci-sion, accuracy, response time and also their sensitivity to wa-ter vapour. The instruments were tested in a field campaignto assess their behaviour under various meteorological con-ditions. The instrument’s suitability for eddy covariance fluxmeasurements was evaluated by applying an artificial flux ofCH4generated above a managed grassland with otherwisevery low methane exchange. This allowed an independentverification of the flux measurements accuracy, including theoverall eddy covariance setup and data treatment. The re-trieved fluxes were in good agreement with the known artifi-cial emission flux, which is more than satisfactory, given thatthe analyzers were attached to separate sonic anemometersplaced on individual eddy towers with different data acquisi-tion systems but similar data treatment that are specific to thebest practice used by the involved research teams.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
Copernicus
en_US
dc.rights.uri
http://creativecommons.org/licenses/by/3.0/
dc.title
Field intercomparison of two optical analyzers for CH4 eddy covariance flux measurement
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution 3.0 Unported
dc.date.published
2010-11-08
ethz.journal.title
Atmospheric Measurement Techniques
ethz.journal.volume
3
en_US
ethz.journal.issue
6
en_US
ethz.journal.abbreviated
Atmos. meas. tech.
ethz.pages.start
1519
en_US
ethz.pages.end
1531
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.notes
.
en_US
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.date.deposited
2017-06-09T06:39:53Z
ethz.source
ECIT
ethz.identifier.importid
imp59364d3293f0437593
ethz.ecitpid
pub:40716
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2017-07-26T06:19:05Z
ethz.rosetta.lastUpdated
2019-09-06T13:52:26Z
ethz.rosetta.versionExported
true
ethz.COinS
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