I-129 and U-236 data from the Atlantic-Arctic Ocean Change (AOC2025) expedition

I-129 and U-236 data (6 depth profiles) collected in the Greenland Sea during the Atlantic-Arctic Ocean Change expedition from 16 May to 5 June 2025 (AOC2025) on board RV Dana. Find the cruise report here: Cruise report Atlantic-Arctic Ocean Change (AOC2025) This dataset includes metadata (Cruise, Activity, Latitude in degrees North, Longitude in degrees East, Year, Month, Day, Niskin Bottle number, Pressure in decibars), hydrographic data (Temperature and Practical Salinity from the CTD sensors), and radionuclide concentrations (I-129 concentration given in atoms per liter and atoms per kilogram, U-236 concentration given in atoms per liter and atoms per kilogram, U-236/U-238 atom ratio, U-238 concentration given in micrograms per kilogram; all given with 1-sigma uncertainties). Ship charter was supported by Danish Center for Marine Research Grant #2025-04.