de.pangaea.dataset864305 und dataset PANGAEA

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https://www.pangaea.de/ information pointOfContact 2026-04-30T23:07:33Z https://doi.pangaea.de/10.1594/PANGAEA.864305 2016-09-05T12:30:52 publication https://doi.org/10.1594/PANGAEA.864305 Harris, Eliza

eliza.harris@uibk.ac.at

https://orcid.org/0000-0002-7102-8305 information author Mohn, Joachim https://orcid.org/0000-0002-9799-1001 information author PANGAEA

info@pangaea.de

https://www.pangaea.de/ information publisher Swiss Federal Laboratories for Materials Science and Technology originator tableDigital Supplement to: Harris, Eliza; Henne, Stephan; Hüglin, Christoph; Zellweger, Christoph; Tuzson, Béla; Ibraim, Erkan; Emmenegger, Lukas; Mohn, Joachim (2017): Tracking nitrous oxide emission processes at a suburban site with semicontinuous, in situ measurements of isotopic composition. Journal of Geophysical Research: Atmospheres, 122(3), 1850-1870, https://doi.org/10.1002/2016JD025906 The isotopic composition of atmospheric nitrous oxide (N2O) was measured semicontinuously, at ~35 min frequency in intermittent periods of 1-6 days over one and a half years, using preconcentration coupled to a quantum cascade laser spectrometer at the suburban site of Dübendorf, Switzerland. The achieved measurement repeatability was 0.08 per mil, 0.11 per mil, and 0.10 per mil for d18O, site preference, and d15Nbulk respectively, which is better than or equal to standard flask sampling-based isotope ratio mass spectrometry performance. The observed mean diurnal cycle reflected the buildup of N2O from isotopically light sources on an isotopically heavy tropospheric background. The measurements were used to determine the source isotopic composition, which varied significantly compared to chemical and meteorological parameters monitored at the site. FLEXPART-COSMO transport modeling in combination with modified Emissions Database for Global Atmospheric Research inventory emissions was used to model N2O mole fractions at the site. Additionally, isotopic signatures were estimated for different source categories using literature data and used to simulate N2O isotopic composition over the measurement period. The model was able to capture variability in N2O mole fraction well, but simulations of isotopic composition showed little agreement with observations. In particular, measured source isotopic composition exhibited one magnitude larger variability than simulated, clearly indicating that the range of isotopic source signatures estimated from literature significantly underestimates true variability of source signatures. Source d18O signature was found to be the most sensitive tracer for urban/industry versus agricultural N2O. d15Nbulk and site preference may provide more insight into microbial and chemical emission processes than partitioning of anthropogenic source categories. completed Harris, Eliza

eliza.harris@uibk.ac.at

https://orcid.org/0000-0002-7102-8305 information principalInvestigator copyright copyright CC-BY-NC-SA-3.0: Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported textTable und geoscientificInformation 8.6119 8.6119 47.4025 47.4025 2014-07-01T17:33:16 2016-02-22T06:42:05 DATE/TIME thematicClassification Nitrous oxide physicalMeasurement Preconcentration coupled to QCLAS ppbv ppbv δ18O, gas physicalMeasurement Preconcentration coupled to QCLAS ‰ ‰ Site preference, N2O physicalMeasurement Preconcentration coupled to QCLAS ‰ ‰ δ15N, gas physicalMeasurement Preconcentration coupled to QCLAS; bulk d15N ‰ air ‰ air Nitrous oxide, standard deviation physicalMeasurement Preconcentration coupled to QCLAS ± ± δ18O, standard deviation physicalMeasurement Preconcentration coupled to QCLAS ± ± Site preference, N2O, standard deviation physicalMeasurement Preconcentration coupled to QCLAS ± ± δ15N, standard deviation physicalMeasurement Preconcentration coupled to QCLAS ± ± text/tab-separated-values unknown https://doi.pangaea.de/10.1594/PANGAEA.864305?format=textfile download dataset The data set was checked for completeness, correctness, and consistency of metainformation. Validity of used methods was checked and - if applicable - precision and range of data. EVENT LABEL: Duebendorf_Empa * LATITUDE: 47.402500 * LONGITUDE: 8.611900 * ELEVATION: 432.0 m * LOCATION: Switzerland