Articles | Volume 15, issue 6
Atmos. Meas. Tech., 15, 1631–1656, 2022
https://doi.org/10.5194/amt-15-1631-2022
Atmos. Meas. Tech., 15, 1631–1656, 2022
https://doi.org/10.5194/amt-15-1631-2022
Research article
21 Mar 2022
Research article | 21 Mar 2022

IRIS analyser assessment reveals sub-hourly variability of isotope ratios in carbon dioxide at Baring Head, New Zealand's atmospheric observatory in the Southern Ocean

Peter Sperlich et al.

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Cited articles

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Short summary
We tested an in situ analyser for carbon and oxygen isotopes in atmospheric CO2 at Baring Head, New Zealand’s observatory for Southern Ocean baseline air. The analyser was able to resolve regional signals of the terrestrial carbon cycle, although the analysis of small events was limited by analytical uncertainty. Further improvement of the instrument performance would be desirable for the robust analysis of distant signals and to resolve the small variability in Southern Ocean baseline air.