Bussmann, Ingeborg; Fischer, Philipp: Dissolved methane concentrations, diffusive methane flux and Essential Ocean Variables (EOVs) in the German Bight in January 2024 (Sternfahrt 11) [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.987470 (dataset in review)
Abstract:
In January 2024 a river flood by the Elbe and Weser resulted in very high discharge of freshwater into the German Bight. To follow this river, plume the RV Mya II cruised from Sylt and between Helgoland, Cuxhaven, Büsum. All instruments were set up in the MOSES laboratory container. Standard hydrographic parameters were determined with a pocket ferrybox running with ship's surface water supply. In addition, dissolved methane was determined continuously. We used a degassing unit which was using surface water from the ship's water supply. The gas mixture was subsequently analysed with a Greenhouse Gas Analyzer from LosGatos. Conversion to methane concentration was performed with water samples, from which the methane content was determined with gas chromatography. Atmospheric methane concentrations were obtained from the ICOS-station Helgoland. Wind speed was obtained from the ships meteorological system. The diffusive flux was calculated as outlined in the additional meta data description.
Keyword(s):
References:
Bussmann, Ingeborg; Brix, Holger; Fischer, Philipp; Kamjunke, Norbert; Krauss, Martin; Raupers, Björn; Sanders, Tina (2024): The MOSES Sternfahrt Expeditions of the Research Vessels ALBIS, LITTORINA, LUDWIG PRANDTL and MYA II to the Elbe River, Elbe Estuary and German Bight in 2023. Berichte zur Polar- und Meeresforschung = Reports on Polar and Marine Research, 786, 65 pp, https://doi.org/10.57738/BzPM_0786_2024
Nightingale, Philip D; Malin, Gill; Law, Cliff S; Watson, Andrew J; Liss, Peter S; Liddicoat, Malcolm; Boutin, Jacqueline; Upstill-Goddard, Robert C (2000): In situ evaluation of air-sea gas exchange parameterizations using novel conservative and volatile tracers. Global Biogeochemical Cycles, 14(1), 373-387, https://doi.org/10.1029/1999GB900091
Striegl, Robert G; Dornblaser, Mark M; McDonald, C P; Rover, J A; Stets, E G (2012): Carbon dioxide and methane emissions from the Yukon River system. Global Biogeochemical Cycles, 26(4), 2012GB004306, https://doi.org/10.1029/2012GB004306
Wanninkhof, Rik (2014): Relationship between wind speed and gas exchange over the ocean revisited. Limnology and Oceanography-Methods, 12(6), 351-362, https://doi.org/10.4319/lom.2014.12.351
Wanninkhof, Rik; Asher, William E; Ho, David T; Sweeney, Colm; McGillis, W R (2009): Advances in Quantifying Air-Sea Gas Exchange and Environmental Forcing. Annual Review of Marine Science, 1(1), 213-244, https://doi.org/10.1146/annurev.marine.010908.163742
Additional metadata:
Device descriptions from ship measurement systems during Sternfahrt 11. Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research - Biological Institute Helgoland, additional_metadata_sternfahrt11.txt
Project(s):
Funding:
Federal Ministry of Research, Technology and Space (BMFTR), grant/award no. 03F0954B: DAM mareXtreme - ElbeXtreme, AWI
Coverage:
Median Latitude: 54.249295 * Median Longitude: 8.407725 * South-bound Latitude: 53.874590 * West-bound Longitude: 8.023690 * North-bound Latitude: 55.059900 * East-bound Longitude: 8.839560
Date/Time Start: 2024-01-16T07:18:00 * Date/Time End: 2024-01-18T15:55:00
Event(s):
M24_stern_11-track * Latitude Start: 55.024260 * Longitude Start: 8.449000 * Latitude End: 54.216400 * Longitude End: 8.023690 * Date/Time Start: 2024-01-16T07:18:00 * Date/Time End: 2024-01-18T15:55:00 * Location: German Bight, Germany * Campaign: MOSES_2024_Elbe-NorthSea1_MYA2 (MOSES_2024_Elbe-NorthSea1, Sternfahrt 11) * Basis: Mya II * Method/Device: Underway cruise track measurements (CT)
Parameter(s):
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Status:
Curation Level: Enhanced curation (CurationLevelC) * Processing Level: PANGAEA data processing level 3 (ProcLevel3)
Size:
26594 data points
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