Characterization of interferences to in situ observations of δ13CH4 and C2H6 when using a cavity ring-down spectrometer at industrial sites

Assan, Sabina; Baudic, Alexia; Guemri, Ali; Ciais, Philippe; Gros, Valerie; Vogel, Felix R.

doi:https://doi.org/10.5194/amt-10-2077-2017

Articles | Volume 10, issue 6

https://doi.org/10.5194/amt-10-2077-2017

© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/amt-10-2077-2017

© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 10, issue 6

Research article

|

07 Jun 2017

Research article |

| 07 Jun 2017

Characterization of interferences to in situ observations of δ¹³CH₄ and C₂H₆ when using a cavity ring-down spectrometer at industrial sites

Sabina Assan, Alexia Baudic, Ali Guemri, Philippe Ciais, Valerie Gros, and Felix R. Vogel

Download

Final revised paper (published on 07 Jun 2017)
Supplement to the final revised paper
Preprint (discussion started on 19 Dec 2016)

Interactive discussion

Status: closed

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

- Printer-friendly version

- Supplement

RC1: 'Comments on Characterisation of interferences to in-situ observations of δ13CH4 and C2H6 when using a Cavity Ring Down Spectrometer at industrial sites', Anonymous Referee #2, 25 Jan 2017
- AC2: 'Response to Review #1:', Sabina Assan, 08 Mar 2017
RC2: 'Characterisation of interferences to in-situ observations of δ13CH4 and C2H6 when using a Cavity Ring Down Spectrometer at industrial sites', Anonymous Referee #3, 22 Feb 2017
- AC1: 'Response to Referee #2:', Sabina Assan, 08 Mar 2017

Short summary

This study is dedicated to improving measurement methods when using a Cavity Ring Down Spectroscopy instrument to measure methane at sites with elevated ethane concentrations such as Oil and Gas sites. The research was undertaken after measurements of natural gas samples suggested biased δ¹³CH₄ results. Two instruments were extensively tested to characterize the cross sensitivities to ethane and δ¹³CH₄ and propose corrections. Results indicate that it is imperative to account for the biases.