Articles | Volume 9, issue 8
Atmos. Meas. Tech., 9, 3717–3737, 2016
https://doi.org/10.5194/amt-9-3717-2016
Atmos. Meas. Tech., 9, 3717–3737, 2016
https://doi.org/10.5194/amt-9-3717-2016

Research article 12 Aug 2016

Research article | 12 Aug 2016

Development and evaluation of a suite of isotope reference gases for methane in air

Peter Sperlich et al.

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Short summary
Isotope measurements in atmospheric CH4 are performed since more than 3 decades. However, standard gases to harmonize global measurements are not available to this day. We designed two methods to calibrate a suite of 8 CH4 gases with a wide range in isotopic composition to the VPDB and VSMOW scales with high precision and accuracy. Synthetic air mixtures with ~2 ppm of calibrated CH4 can be provided to the community by the ISOLAB of the Max Planck Institute for Biogeochemistry in Jena, Germany.