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Atmospheric Measurement Techniques An interactive open-access journal of the European Geosciences Union
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Volume 3, issue 1
Atmos. Meas. Tech., 3, 113–125, 2010
https://doi.org/10.5194/amt-3-113-2010
© Author(s) 2010. This work is distributed under
the Creative Commons Attribution 3.0 License.
Atmos. Meas. Tech., 3, 113–125, 2010
https://doi.org/10.5194/amt-3-113-2010
© Author(s) 2010. This work is distributed under
the Creative Commons Attribution 3.0 License.

  28 Jan 2010

28 Jan 2010

Continuous measurements of atmospheric oxygen and carbon dioxide on a North Sea gas platform

I. T. van der Laan-Luijkx, R. E. M. Neubert, S. van der Laan, and H. A. J. Meijer I. T. van der Laan-Luijkx et al.
  • Centre for Isotope Research (CIO), University of Groningen, Groningen, The Netherlands

Abstract. A new atmospheric measurement station has been established on the North Sea oil and gas production platform F3, 200 km north off the Dutch coast (5°51' N, 4°44' E). Atmospheric concentrations of O2 and CO2 are continuously measured using fuel cell technology and compact infrared absorption instruments, respectively. Furthermore, the station includes an automated air flask sampler for laboratory analysis of the atmospheric concentrations of CO2, CH4, CO and O2 and isotope measurements of δ13C, δ18O and Δ14C from CO2. This station is the first fixed sea based station with on-site continuous O2 and CO2 measurements and therefore yields valuable information about the CO2 uptake in coastal marine regions, specifically the North Sea. This paper presents the measurement station and the used methodologies in detail. In comparison to land-based stations, the data show low day-to-day variability, as they are practically free of nightly inversions as well as human influences, due to the station's remoteness. Therefore, the data set collected at this measurement station serves directly as background data for the coastal northwest European region. Additionally, the first data are presented showing the seasonal cycle as expected during August 2008 through June 2009. Furthermore, some short-term O2 and CO2 signals are presented. The observations at the platform include several large and fast changing negative atmospheric O2 excursions without an accompanying change in the CO2 signal, which most likely indicate marine O2 uptake.

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