https://doi.pangaea.de/10.1594/PANGAEA.995906Steiner, ZviZviSteiner0000-0002-9584-4956GEOMAR - Helmholtz Centre for Ocean Research KielCzeschel, RenaRenaCzeschel0000-0001-6516-2391GEOMAR - Helmholtz Centre for Ocean Research KielKrahmann, GerdGerdKrahmannGEOMAR - Helmholtz Centre for Ocean Research KielAchterberg, Eric PieterEric PieterAchterberg0000-0002-3061-2767GEOMAR - Helmholtz Centre for Ocean Research KielPANGAEA2026CTD dataEquatorial pacific oceanPacific Ocean2023-04-15T12:54:00/2023-05-26T22:29:44Bundled Publication of Datasets4 datasetsapplication/zipCreative Commons Attribution 4.0 InternationalTwo SeaBird SBE911Plus CTD were deployed at 39 different stations during RV Sonne cruise SO298 that sailed along the equatorial Pacific from Ecuador to Australia (GEOTRACES GP11 transect) during April – May 2023. One CTD was mounted on a stainless-steel rosette and was connected to the following sensors: Pressure (Digiquartz with TC), two temperature sensors (ITS90 °C), two conductivity sensors, oxygen (SBE43), PAR (Biospherical Licor Chelsea sensor), fluorometer (Wet Labs ECO-AFL/FL), turbidity (Wet Labs ECO-NTU) and an altimeter. The second CTD was mounted on a titanium rosette used for trace metal clean collection of water samples, and was connected to the following sensors: Pressure (Digiquartz with TC), two temperature sensors (ITS90 °C), two conductivity sensors, two oxygen sensors (SBE43), transmissometer (Wet Labs C-Star), turbidity (OBS Seapoint) and an altimeter. The oxygen data were calibrated against discrete water samples analysed using the Winkler method, other sensor data used factory calibrations.157.85-81.0-2.50.00526