2015
DOI: 10.5194/bg-12-2517-2015
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First on-line isotopic characterization of N<sub>2</sub>O above intensively managed grassland

Abstract: Abstract. The analysis of the four main isotopic N2O species (14N14N16O, 14N15N16O, 15N14N16O, 14N14N18O) and especially the intramolecular distribution of 15N ("site preference", SP) has been suggested as a tool to distinguish source processes and to help constrain the global N2O budget. However, current studies suffer from limited spatial and temporal resolution capabilities due to the combination of discrete flask sampling with subsequent laboratory-based mass-spectrometric analysis. Quantum cascade laser a… Show more

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Cited by 59 publications
(109 citation statements)
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“…) were measured and are described in detail by Wolf et al. (). The ic of N 2 O emissions was determined using keeling plots of N 2 O ic of ambient air (height of measurement inlet 2.2 m).…”
Section: Methodsmentioning
confidence: 99%
See 1 more Smart Citation
“…) were measured and are described in detail by Wolf et al. (). The ic of N 2 O emissions was determined using keeling plots of N 2 O ic of ambient air (height of measurement inlet 2.2 m).…”
Section: Methodsmentioning
confidence: 99%
“…) and considers SP, (2) to link it to LandscapeDNDC and analyze the agreement between measured (Wolf et al. ) and simulated N 2 O ic emitted from an intensively managed grassland site in Switzerland, and (3) to assess if this approach can identify weaknesses in the model process parameterization.…”
Section: Introductionmentioning
confidence: 99%
“…However, highprecision measurements of low abundance isotopic species of trace gases (such as δD-CH 4 ) at ambient mole fractions require preconcentration when using direct absorption techniques (Bergamaschi et al, 1998a). The strategy of trace gas preconcentration prior to isotopic analysis by quantum cascade laser spectroscopy (QCLAS) has been demonstrated for nitrous oxide (N 2 O) isotopologues (Mohn et al, 2010(Mohn et al, , 2012 and was applied in an extended field campaign (Wolf et al, 2015).…”
Section: S Eyer Et Almentioning
confidence: 99%
“…1) is based on the "Medusa" system (Miller et al, 2008), which was later adopted for the preconcentration of N 2 O and its subsequent isotope analysis by QCLAS (Mohn et al, 2010(Mohn et al, , 2012Waechter et al, 2008;Wolf et al, 2015). The main advantages over previously developed systems (Brand, 1995) are the low trapping temperatures in combination with its independence from liquid nitrogen.…”
Section: Trex: Designmentioning
confidence: 99%
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