Atmospheric CO₂, δ(O₂/N₂) and δ13CO2 measurements at Jungfraujoch, Switzerland: results from a flask sampling intercomparison program

van der Laan-Luijkx, I. T.; van der Laan, Sander; Uglietti, Chiara; Schibig, Michael; Neubert, R. E. M.; Meijer, H. A. J.; Brand, W. A.; Jordan, A.; Richter, J. M.; Rothe, M.; Leuenberger, Markus (2013). Atmospheric CO₂, δ(O₂/N₂) and δ13CO2 measurements at Jungfraujoch, Switzerland: results from a flask sampling intercomparison program. Atmospheric Measurement Techniques (AMT), 6(7), pp. 1805-1815. Copernicus Publications 10.5194/amt-6-1805-2013

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We present results from an intercomparison program of CO2, δ(O2/N2) and δ13CO2 measurements from atmospheric flask samples. Flask samples are collected on a bi-weekly basis at the High Altitude Research Station Jungfraujoch in Switzerland for three European laboratories: the University of Bern, Switzerland, the University of Groningen, the Netherlands and the Max Planck Institute for Biogeochemistry in Jena, Germany. Almost 4 years of measurements of CO2, δ(O2/N2) and δ13CO2 are compared in this paper to assess the measurement compatibility of the three laboratories. While the average difference for the CO2 measurements between the laboratories in Bern and Jena meets the required compatibility goal as defined by the World Meteorological Organization, the standard deviation of the average differences between all laboratories is not within the required goal. However, the obtained annual trend and seasonalities are the same within their estimated uncertainties. For δ(O2/N2) significant differences are observed between the three laboratories. The comparison for δ13CO2 yields the least compatible results and the required goals are not met between the three laboratories. Our study shows the importance of regular intercomparison exercises to identify potential biases between laboratories and the need to improve the quality of atmospheric measurements.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Physics Institute > Climate and Environmental Physics
10 Strategic Research Centers > Oeschger Centre for Climate Change Research (OCCR)

UniBE Contributor:

van der Laan, Sander; Uglietti, Chiara; Schibig, Michael and Leuenberger, Markus

Subjects:

500 Science > 530 Physics
500 Science > 550 Earth sciences & geology

ISSN:

1867-1381

Publisher:

Copernicus Publications

Language:

English

Submitter:

Doris Rätz

Date Deposited:

25 Sep 2014 15:52

Last Modified:

26 Jun 2016 01:50

Publisher DOI:

10.5194/amt-6-1805-2013

BORIS DOI:

10.7892/boris.47750

URI:

https://boris.unibe.ch/id/eprint/47750

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