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

Eyer, S.; Tuzson, B.; Popa, M. E.; van der Veen, C.; Röckmann, T.; Rothe, M.; Brand, W. A.; Fisher, R.; Lowry, D.; Nisbet, E. G.; Brennwald, M. S.; Harris, E.; Zellweger, C.; Emmenegger, L.; Fischer, H.; Mohn, J.

doi:https://doi.org/10.5194/amt-9-263-2016

Articles | Volume 9, issue 1

https://doi.org/10.5194/amt-9-263-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/amt-9-263-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 9, issue 1

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, B. Tuzson, M. E. Popa, C. van der Veen, T. Röckmann, M. Rothe, W. A. Brand, R. Fisher, D. Lowry, E. G. Nisbet, M. S. Brennwald, E. Harris, C. Zellweger, L. Emmenegger, H. Fischer, and J. Mohn

Download

Final revised paper (published on 27 Jan 2016)
Preprint (discussion started on 31 Aug 2015)

Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

- Printer-friendly version

- Supplement

RC C3952: 'Review of S. Eyer et al.', Hinrich Schaefer, 19 Nov 2015
- AC C4672: 'Answer to the Reviewer', Simon Eyer, 05 Jan 2016
RC C4325: 'AMTD-2015-190 S. Eyer et al.', Murray Hamilton, 14 Dec 2015
- AC C4688: 'Response to Referee #2', Simon Eyer, 05 Jan 2016

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.