Large scale hydrogeochemical and isotopic observations in the Baltic Sea system
McKenzie, Tristan (University of Gothenburg)
Majtényi-Hill, Claudia (University of Gothenburg)
Henriksson, Linnea (University of Gothenburg)
Ljungberg, Wilma (University of Gothenburg)
Reithmaier, Gloria M. S. (University of Gothenburg)
Cotovicz, Luiz C. (Leibniz Institute for Baltic Sea Research Warnemünde)
Lencina-Avila, Jannine M. (Leibniz Institute for Baltic Sea Research Warnemünde)
Mitschke, Nico (Carl von Ossietzky Universität Oldenburg)
Böttcher, Michael Ernst (University of Rostock)
Szymczycha, Beata (Institute of Oceanology Polish Academy of Sciences)
Ulfsbo, Adam (University of Gothenburg)
Tomer, Aprajita S. (University of Gothenburg)
Cardis, Tibaud (University of Gothenburg)
Hall, Per O. J. (University of Gothenburg)
Holloway, Ceylena (Southern Cross University)
Rodriguez-Puig, Júlia (Universitat Autònoma de Barcelona. Departament de Física)
Börjesson, Solveig (University of Gothenburg)
Yau, Yvonne Y. Y. (Stockholm University)
Zhao, Shibin (Ocean University of China)
Cheung, Henry L. S. (University of Gothenburg)
Bonaglia, Stefano (University of Gothenburg)
Politi, Tobia (University of Gothenburg)
Zetterholm, Linda (Umeå University)
Verbücheln, Nicolai (University of Gothenburg)
Schmiedinger, Iris ((IOW). Geochemistry & Leibniz Institute for Baltic Sea Research)
Rehder, Gregor (Leibniz Institute for Baltic Sea Research Warnemünde)
Dittmar, Thorsten (Ossietzky Universität Oldenburg)
Tysklind, Mats (Umeå University)
Inostroza, Pedro A. (University of Gothenburg)
Tronholm, Ana (University of Gothenburg)
Santos, Isaac R. (University of Gothenburg)
Universitat Autònoma de Barcelona. Institut de Ciència i Tecnologia Ambientals

Data:	2025
Resum:	We report hydrogeochemical and isotopic observations across the Baltic Sea from two research expeditions: (1) a ~5000 km cruise-track onboard the R/V Skagerak in 2023 and (2) a land-based sampling for terrestrial endmembers in 2024. The ship-based observations include continuous monitoring of hydrographic parameters, pH, and 222Rn in surface water. In addition, we collected 542 discrete samples from the water column, vertical profiles (n = 69 stations), and meteorological data. Land observations include discrete samples from beach groundwater (n = 77), nearshore surface water (n = 47), and rivers close to the coastline (n = 46). Discrete samples were analyzed for short-lived radium isotopes, nutrients, dissolved organic and inorganic carbon, total dissolved nitrogen, total alkalinity, methane, and stable isotopes (δ18OH2O, δ2HH2O, δ13CDIC, δ13CCO2, δ13CCH4). Data products include seven open-access files. This dataset forms the deposit for upcoming original research publications. This dataset will also be valuable to researchers interested in the hydrogeochemistry of coastal seas, like the Baltic Sea, and more generally interested in submarine groundwater discharge and estuarine biogeochemistry.
Ajuts:	Ministerio de Ciencia, Innovación y Universidades FPU20/01369
Nota:	Unidad de excelencia María de Maeztu CEX2019-000940-M
Drets:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Llengua:	Anglès
Document:	Article ; recerca ; Versió publicada
Publicat a:	Scientific data, Vol. 12 (November 2025) , art. 1757, ISSN 2052-4463

DOI: 10.1038/s41597-025-06217-9
PMID: 41198700

11 p, 2.1 MB

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