Bussmann, Ingeborg; Bergmann, Ragna; Fischer, Philipp: Dissolved methane concentrations, diffusive methane flux and EOVs in the German Bight during RV HEINCKE cruise HE673/2, MOSES Sternfahrt 15 in November 2025 [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.997510 (dataset in review)
Abstract:
In continuation of the previous cruises (Sternfahrten) we covered a similar area with the RV Heincke but in late autumn (20 - 22 November 2026). 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 systems. The diffusive flux was calculated as outlined in the additional meta data description.
Keyword(s):
References:
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 15. Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research - Biological Institute Helgoland, Metadata_Stern15.txt
Project(s):
Funding:
Federal Ministry of Research, Technology and Space (BMFTR), grant/award no. 03F0954B: DAM mareXtreme - ElbeXtreme, AWI
Coverage:
Median Latitude: 54.187410 * Median Longitude: 8.287854 * South-bound Latitude: 53.959800 * West-bound Longitude: 7.928300 * North-bound Latitude: 54.400000 * East-bound Longitude: 8.620400
Date/Time Start: 2025-11-20T17:59:00 * Date/Time End: 2025-11-22T14:49:00
Minimum DEPTH, water: 1 m * Maximum DEPTH, water: 1 m
Event(s):
HE673/2_0_Underway-5 * Latitude Start: 54.173910 * Longitude Start: 7.894276 * Latitude End: 53.530585 * Longitude End: 8.578513 * Date/Time Start: 2025-11-20T14:06:33 * Date/Time End: 2025-11-23T06:17:12 * Elevation Start: -5.0 m * Elevation End: -2.0 m * O2A Registry URI: https://registry.o2a-data.de/items/583 * Campaign: HE673/2 (MOSES_2025_Elbe-NorthSea, Nothilfe Uthörn, SSSE) * Basis: Heincke * Method/Device: Ship Weather Station (SWEAS)
HE673/2_27 * Latitude Start: 54.300000 * Longitude Start: 8.061200 * Latitude End: 54.236200 * Longitude End: 7.932000 * Date/Time Start: 2025-11-20T17:59:00 * Date/Time End: 2025-11-22T14:49:00 * Location: North Sea * Campaign: HE673/2 (MOSES_2025_Elbe-NorthSea, Nothilfe Uthörn, SSSE) * Basis: Heincke * Method/Device: MOSES laboratory container * Comment: event was not logged in DSHIP
HE673/2-track * Latitude Start: 54.174010 * Longitude Start: 7.894160 * Latitude End: 53.533200 * Longitude End: 8.581010 * Date/Time Start: 2025-11-20T14:06:00 * Date/Time End: 2025-11-23T22:39:00 * Campaign: HE673/2 (MOSES_2025_Elbe-NorthSea, Nothilfe Uthörn, SSSE) * Basis: Heincke * Method/Device: Underway cruise track measurements (CT) * Comment: Helgoland - Bremerhaven
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)
Size:
29858 data points
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