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N$_{2}$O isotopocule measurements using laser spectroscopy: analyzer characterization and intercomparison

Harris, Stephen J.; Liisberg, Jesper; Xia, Longlong; Wei, Jing; Zeyer, Kerstin; Yu, Longfei; Barthel, Matti; Wolf, Benjamin; Kelly, Bryce F. J.; Cendón, Dioni I.; Blunier, Thomas; Six, Johan; Mohn, Joachim

Abstract:
For the past two decades, the measurement of nitrous oxide (N2O) isotopocules – isotopically substituted molecules $^{14}$N$^{15}$N$^{16}$O, $^{15}$N$^{14}$N$^{16}$O and $^{14}$N$^{14}$N$^{18}$O of the main isotopic species $^{14}$N$^{14}$N$^{16}$O – has been a promising technique for understanding N2O production and consumption pathways. The coupling of non-cryogenic and tuneable light sources with different detection schemes, such as direct absorption quantum cascade laser absorption spectroscopy (QCLAS), cavity ring-down spectroscopy (CRDS) and off-axis integrated cavity output spectroscopy (OA-ICOS), has enabled the production of commercially available and field-deployable N$_{2}$O isotopic analyzers. In contrast to traditional isotope-ratio mass spectrometry (IRMS), these instruments are inherently selective for position-specific $^{15}$N substitution and provide real-time data, with minimal or no sample pretreatment, which is highly attractive for process studies.
Here, we compared the performance of N$_{2}$O isotope laser spectrometers with the three most common detection schemes: OA-ICOS (N$_{2}$OIA-30e-EP, ABB – Los Gatos Research Inc.), CRDS (G5131-i, Picarro Inc.) and QCLAS (dual QCLAS and preconcentration, trace gas extractor (TREX)-mini QCLAS, Aerodyne Research Inc.). ... mehr

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Verlagsausgabe §
DOI: 10.5445/IR/1000120716
Veröffentlicht am 30.06.2020
Originalveröffentlichung
DOI: 10.5194/amt-13-2797-2020
Web of Science
Zitationen: 1
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Meteorologie und Klimaforschung - Atmosphärische Umweltforschung (IMK-IFU)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2020
Sprache Englisch
Identifikator ISSN: 1867-8548
KITopen-ID: 1000120716
Erschienen in Atmospheric measurement techniques
Band 13
Heft 5
Seiten 2797–2831
Vorab online veröffentlicht am 28.05.2020
Nachgewiesen in Web of Science
Scopus
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