Hydrogeochemical and isotopic observations in the Baltic Sea system

Data products are organized into the following files: Ferrybox surface water survey (1-minute resolution): 1_Cruise_Ferrybox_1min.csv Meteorological survey (2-minute resolution): 2_Cruise_meteo_2min.csv HydroFIA pH survey with matched and down-sampled Ferrybox data (10-minute resolution): 3_Cruise_HydroFIA_pH_10min.csv 222Rn surface water survey with matched and down-sampled Ferrybox and meteorological data (30-minute resolution): 4_Cruise_RAD7_30min.csv Processed CTD profiles: 5_Cruise_CTD.csv Cruise campaign discrete sample data: 6_Land_discrete.csv Land campaign discrete sample data: 7_Land_discrete.csv Additional description of the files, variables, and metadata can be found in the file "Baltic_data_metadata.txt". V4 Update: Corrected typo in 5_Cruise_CTD.csv column names V3 Updates: Corrected the number of significant figures in the DOC and TDN data, corrected analytical uncertainty values for δ13C-CH4 and δ13C-CO2.