Articles | Volume 9, issue 1
Atmos. Meas. Tech., 9, 263–280, 2016
https://doi.org/10.5194/amt-9-263-2016
Atmos. Meas. Tech., 9, 263–280, 2016
https://doi.org/10.5194/amt-9-263-2016

Research article 27 Jan 2016

Research article | 27 Jan 2016

Real-time analysis of δ13C- and δD-CH4 in ambient air with laser spectroscopy: method development and first intercomparison results

S. Eyer et al.

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Cited articles

Beck, V., Chen, H., Gerbig, C., Bergamaschi, P., Bruhwiler, L., Houweling, S., Röckmann, T., Kolle, O., Steinbach, J., Koch, T., Sapart, C. J., Van Der Veen, C., Frankenberg, C., Andreae, M. O., Artaxo, P., Longo, K. M., and Wofsy, S. C.: Methane airborne measurements and comparison to global models during BARCA, J. Geophys. Res. Atmos., 117, D15310, https://doi.org/10.1029/2011JD017345, 2012.
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Short summary
We present a newly developed field-deployable, autonomous platform simultaneously measuring the three most abundant isotopologues of methane using mid-infrared laser absorption spectroscopy. The instrument consists of a compact quantum cascade laser absorption spectrometer (QCLAS) coupled to a preconcentration unit, called TRace gas EXtractor (TREX). The performance of this new in situ technique was investigated during a 2-week measurement campaign and compared to other techniques.