Harris Eliza eliza.harris@uibk.ac.at 0000-0002-7102-8305 Mohn Joachim 0000-0002-9799-1001 2016 N2O mole fraction and isotopic composition at Dübendorf, Switzerland, from 2014-2016 dataset Swiss Federal Laboratories for Materials Science and Technology https://doi.org/10.1594/PANGAEA.864305 2016-09-05T12:30:52 Harris Eliza eliza.harris@uibk.ac.at 0000-0002-7102-8305 Henne Stephan 0000-0002-6637-4887 Hüglin Christoph Zellweger Christoph 0000-0002-0519-0689 Tuzson Béla Ibraim Erkan Emmenegger Lukas 0000-0002-9812-3986 Mohn Joachim 0000-0002-9799-1001 2017 Tracking nitrous oxide emission processes at a suburban site with semicontinuous, in situ measurements of isotopic composition journal article Journal of Geophysical Research: Atmospheres 122(3) https://doi.org/10.1002/2016JD025906 1850-1870 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. 8.6119 8.6119 47.4025 47.4025 8.6119 47.4025 2014-07-01T17:33:16 2016-02-22T06:42:05 432.0 432.0 not specified Duebendorf_Empa 47.4025 8.6119 Switzerland 432.0 22536 CC-BY-NC-SA-3.0 Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported https://creativecommons.org/licenses/by-nc-sa/3.0/ DATE/TIME Date/Time http://en.wikipedia.org/wiki/ISO_8601 Time T http://dbpedia.org/resource/Time Harris Eliza eliza.harris@uibk.ac.at 0000-0002-7102-8305 Date/Time Nitrous oxide N2O ppbv nitrous oxide Preconcentration coupled to QCLAS Harris Eliza eliza.harris@uibk.ac.at 0000-0002-7102-8305 N2O [ppbv] δ18O, gas δ18O-O2 ‰ δ18O http://en.wikipedia.org/wiki/List_of_elements_by_stability_of_isotopes gas Preconcentration coupled to QCLAS Harris Eliza eliza.harris@uibk.ac.at 0000-0002-7102-8305 δ18O-O2 [‰] Site preference, N2O SP N2O ‰ Preconcentration coupled to QCLAS Harris Eliza eliza.harris@uibk.ac.at 0000-0002-7102-8305 SP N2O [‰] δ15N, gas δ15N N2 ‰ air δ15N http://en.wikipedia.org/wiki/List_of_elements_by_stability_of_isotopes gas Preconcentration coupled to QCLAS Harris Eliza eliza.harris@uibk.ac.at 0000-0002-7102-8305 bulk d15N δ15N N2 [‰ air] Nitrous oxide, standard deviation N2O std dev ± nitrous oxide standard deviation std dev https://en.wikipedia.org/wiki/Standard_deviation Preconcentration coupled to QCLAS Harris Eliza eliza.harris@uibk.ac.at 0000-0002-7102-8305 N2O std dev [±] δ18O, standard deviation δ18O std dev ± δ18O http://en.wikipedia.org/wiki/List_of_elements_by_stability_of_isotopes standard deviation std dev https://en.wikipedia.org/wiki/Standard_deviation Preconcentration coupled to QCLAS Harris Eliza eliza.harris@uibk.ac.at 0000-0002-7102-8305 δ18O std dev [±] Site preference, N2O, standard deviation SP N2O std dev ± standard deviation std dev https://en.wikipedia.org/wiki/Standard_deviation Preconcentration coupled to QCLAS Harris Eliza eliza.harris@uibk.ac.at 0000-0002-7102-8305 SP N2O std dev [±] δ15N, standard deviation δ15N std dev ± δ15N http://en.wikipedia.org/wiki/List_of_elements_by_stability_of_isotopes standard deviation std dev https://en.wikipedia.org/wiki/Standard_deviation Preconcentration coupled to QCLAS Harris Eliza eliza.harris@uibk.ac.at 0000-0002-7102-8305 δ15N std dev [±] supplement citable deNBIchemical author58245 author58246 author60968 author60969 author60970 author60971 author60972 author60973 event2815454 geocode1599 geocode1600 geocode1601 geocode8128 journal8819 license105 method9258 param130838 param13500 param14500 param16482 param50166 param50167 param50834 param75382 pi58245 ref89991 sourceinst20471 term1073092 term1073093 term21461 term2662985 term33871 term37764 term40464 term43975 topotype1