/* DATA DESCRIPTION:
Citation:	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
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) (URI: https://geostor.cdrmare.de/en/)
	Research Mission of the German Marine Research Alliance (DAM): Marine carbon sinks in decarbonisation pathways (CDRmare) (URI: https://cdrmare.de/en/)
Funding:	Federal Ministry of Education and Research (BMBF) (URI: https://www.bmbf.de/), grant/award no. 03F0893A: DAM CDRmare - GEOSTOR, GEOMAR (URI: https://foerderportal.bund.de/foekat/jsp/SucheAction.do?actionMode=view&fkz=03F0893A)
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) (URI: https://creativecommons.org/licenses/by/4.0/)
Size:	14 datasets
*/
/* TABULAR SUMMARY OF DATASETS LISTED IN THIS COLLECTION: */
Filename	Citation of child dataset
AL575_PICARRO_BOW_20220629.tab	Weiß, Tim; Schmidt, Mark; Haeckel, Matthias (2025): Atmospheric methane and carbon dioxide concentrations measured during ALKOR cruise AL575 on 2022-06-29. https://doi.org/10.1594/PANGAEA.982666
AL575_PICARRO_BOW_20220630.tab	Weiß, Tim; Schmidt, Mark; Haeckel, Matthias (2025): Atmospheric methane and carbon dioxide concentrations measured during ALKOR cruise AL575 on 2022-06-30. https://doi.org/10.1594/PANGAEA.983931
AL575_PICARRO_BOW_20220701.tab	Weiß, Tim; Schmidt, Mark; Haeckel, Matthias (2025): Atmospheric methane and carbon dioxide concentrations measured during ALKOR cruise AL575 on 2022-07-01. https://doi.org/10.1594/PANGAEA.983846
AL575_PICARRO_BOW_20220702.tab	Weiß, Tim; Schmidt, Mark; Haeckel, Matthias (2025): Atmospheric methane and carbon dioxide concentrations measured during ALKOR cruise AL575 on 2022-07-02. https://doi.org/10.1594/PANGAEA.983847
AL575_PICARRO_BOW_20220703.tab	Weiß, Tim; Schmidt, Mark; Haeckel, Matthias (2025): Atmospheric methane and carbon dioxide concentrations measured during ALKOR cruise AL575 on 2022-07-03. https://doi.org/10.1594/PANGAEA.983848
AL575_PICARRO_BOW_20220704.tab	Weiß, Tim; Schmidt, Mark; Haeckel, Matthias (2025): Atmospheric methane and carbon dioxide concentrations measured during ALKOR cruise AL575 on 2022-07-04. https://doi.org/10.1594/PANGAEA.983851
AL575_PICARRO_BOW_20220705.tab	Weiß, Tim; Schmidt, Mark; Haeckel, Matthias (2025): Atmospheric methane and carbon dioxide concentrations measured during ALKOR cruise AL575 on 2022-07-05. https://doi.org/10.1594/PANGAEA.983852
AL575_PICARRO_BOW_20220706.tab	Weiß, Tim; Schmidt, Mark; Haeckel, Matthias (2025): Atmospheric methane and carbon dioxide concentrations measured during ALKOR cruise AL575 on 2022-07-06. https://doi.org/10.1594/PANGAEA.983849
AL575_PICARRO_BOW_20220707.tab	Weiß, Tim; Schmidt, Mark; Haeckel, Matthias (2025): Atmospheric methane and carbon dioxide concentrations measured during ALKOR cruise AL575 on 2022-07-07. https://doi.org/10.1594/PANGAEA.983854
AL575_PICARRO_BOW_20220708.tab	Weiß, Tim; Schmidt, Mark; Haeckel, Matthias (2025): Atmospheric methane and carbon dioxide concentrations measured during ALKOR cruise AL575 on 2022-07-08. https://doi.org/10.1594/PANGAEA.983857
AL575_PICARRO_BOW_20220709.tab	Weiß, Tim; Schmidt, Mark; Haeckel, Matthias (2025): Atmospheric methane and carbon dioxide concentrations measured during ALKOR cruise AL575 on 2022-07-09. https://doi.org/10.1594/PANGAEA.983855
AL575_PICARRO_BOW_20220710.tab	Weiß, Tim; Schmidt, Mark; Haeckel, Matthias (2025): Atmospheric methane and carbon dioxide concentrations measured during ALKOR cruise AL575 on 2022-07-10. https://doi.org/10.1594/PANGAEA.983856
AL575_PICARRO_BOW_20220711.tab	Weiß, Tim; Schmidt, Mark; Haeckel, Matthias (2025): Atmospheric methane and carbon dioxide concentrations measured during ALKOR cruise AL575 on 2022-07-11. https://doi.org/10.1594/PANGAEA.983850
AL575_PICARRO_BOW_20220712.tab	Weiß, Tim; Schmidt, Mark; Haeckel, Matthias (2025): Atmospheric methane and carbon dioxide concentrations measured during ALKOR cruise AL575 on 2022-07-12. https://doi.org/10.1594/PANGAEA.983853
