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Weiß, Tim; Schmidt, Mark; Haeckel, Matthias (2025): Atmospheric methane and carbon dioxide concentrations measured during ALKOR cruise AL575, 29 June 2022 – 12 July 2022, Kiel – Kiel [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.982665

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Published: 2025-08-18 • DOI registered: 2025-09-16

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Abstract:
Atmospheric carbon dioxide (CO2) and methane (CH4) concentrations were monitored during AL575 cruise (29.6.-12.7.2022) using a cavity ring down spectrometer (Picarro G2301-f CRDS) and GEOMARs 'Atmospheric Intake System' (AIS). The Picarro/AIS system was installed in the wet laboratory (starboard, main deck) of RV ALKOR and was connected by an aluminium tube to an air inlet nozzle placed at the bow of RV ALKOR. The air was pumped via the AIS intake tube with a flow rate of 2.67 litre per minute to the Picarro analyser. The atmospheric CH4, CO2, and water vapour concentrations were determined in real time at 2-3 Hz sampling rate. A time offset of 87 seconds between the air intake nozzle at the bow (6 m above sea surface) and the actual gas measurement at the Picarro was determined and the calculated flow rate considered, when correlating the gas data with navigation and weather data provided by the WERUM dship repository (https://dship.geomar.de). The weather data is published separately at doi:10.1594/PANGAEA.983833 .
Keyword(s):
atmospheric carbon dioxide; atmospheric methane; greenhouse gas emissions; North Sea
Related to:
Haeckel, Matthias; Schmidt, Mark (2024): Assessing the risk of greenhouse gas emissions from abandoned wells, Cruise No. AL575, 27 JUNE 2022 - 13 JULY 2022, Kiel - Kiel, GEOSTOR leak. Alkor-Berichte, GEOMAR Helmholtz Centre for Ocean Research Kiel, AL575, 33 pp, https://doi.org/10.3289/CR_AL575
Weiß, Tim; Schmidt, Mark; Haeckel, Matthias (2025): Weather data measured during ALKOR cruise AL575, 29 June 2022 – 12 July 2022, Kiel – Kiel [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.983833
Project(s):
DAM CDRmare - GEOSTOR: Submarine Carbon Dioxide Storage in Geological Formations of the German North Sea (GEOSTOR)
Research Mission of the German Marine Research Alliance (DAM): Marine carbon sinks in decarbonisation pathways (CDRmare)
Funding:
Federal Ministry of Education and Research (BMBF), grant/award no. 03F0893A: DAM CDRmare - GEOSTOR, GEOMAR
Coverage:
Median Latitude: 56.611970 * Median Longitude: 2.291994 * South-bound Latitude: 53.836509 * West-bound Longitude: -1.849451 * North-bound Latitude: 58.136956 * East-bound Longitude: 10.849801
Date/Time Start: 2022-06-29T00:00:00 * Date/Time End: 2022-07-12T19:00:28
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Size:
14 datasets

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Datasets listed in this publication series

  1. Weiß, T; Schmidt, M; Haeckel, M (2025): Atmospheric methane and carbon dioxide concentrations measured during ALKOR cruise AL575 on 2022-06-29. https://doi.org/10.1594/PANGAEA.982666
  2. Weiß, T; Schmidt, M; Haeckel, M (2025): Atmospheric methane and carbon dioxide concentrations measured during ALKOR cruise AL575 on 2022-06-30. https://doi.org/10.1594/PANGAEA.983931
  3. Weiß, T; Schmidt, M; Haeckel, M (2025): Atmospheric methane and carbon dioxide concentrations measured during ALKOR cruise AL575 on 2022-07-01. https://doi.org/10.1594/PANGAEA.983846
  4. Weiß, T; Schmidt, M; Haeckel, M (2025): Atmospheric methane and carbon dioxide concentrations measured during ALKOR cruise AL575 on 2022-07-02. https://doi.org/10.1594/PANGAEA.983847
  5. Weiß, T; Schmidt, M; Haeckel, M (2025): Atmospheric methane and carbon dioxide concentrations measured during ALKOR cruise AL575 on 2022-07-03. https://doi.org/10.1594/PANGAEA.983848
  6. Weiß, T; Schmidt, M; Haeckel, M (2025): Atmospheric methane and carbon dioxide concentrations measured during ALKOR cruise AL575 on 2022-07-04. https://doi.org/10.1594/PANGAEA.983851
  7. Weiß, T; Schmidt, M; Haeckel, M (2025): Atmospheric methane and carbon dioxide concentrations measured during ALKOR cruise AL575 on 2022-07-05. https://doi.org/10.1594/PANGAEA.983852
  8. Weiß, T; Schmidt, M; Haeckel, M (2025): Atmospheric methane and carbon dioxide concentrations measured during ALKOR cruise AL575 on 2022-07-06. https://doi.org/10.1594/PANGAEA.983849
  9. Weiß, T; Schmidt, M; Haeckel, M (2025): Atmospheric methane and carbon dioxide concentrations measured during ALKOR cruise AL575 on 2022-07-07. https://doi.org/10.1594/PANGAEA.983854
  10. Weiß, T; Schmidt, M; Haeckel, M (2025): Atmospheric methane and carbon dioxide concentrations measured during ALKOR cruise AL575 on 2022-07-08. https://doi.org/10.1594/PANGAEA.983857
  11. Weiß, T; Schmidt, M; Haeckel, M (2025): Atmospheric methane and carbon dioxide concentrations measured during ALKOR cruise AL575 on 2022-07-09. https://doi.org/10.1594/PANGAEA.983855
  12. Weiß, T; Schmidt, M; Haeckel, M (2025): Atmospheric methane and carbon dioxide concentrations measured during ALKOR cruise AL575 on 2022-07-10. https://doi.org/10.1594/PANGAEA.983856
  13. Weiß, T; Schmidt, M; Haeckel, M (2025): Atmospheric methane and carbon dioxide concentrations measured during ALKOR cruise AL575 on 2022-07-11. https://doi.org/10.1594/PANGAEA.983850
  14. Weiß, T; Schmidt, M; Haeckel, M (2025): Atmospheric methane and carbon dioxide concentrations measured during ALKOR cruise AL575 on 2022-07-12. https://doi.org/10.1594/PANGAEA.983853