CTD Data were collected with an SBE911+  probe and pre-processed on board using SBE Data Processing software in the following steps according to the CTD manufacturer's recommendations :data conversion, low-pass filtering of pressure readings, temporal alignment of CTD’s oxygen sensor, cell thermal mass correction, computing of derived variables, bin averaging at 1 dbar bins and splitting of downcast and upcast. Here only the upcast data (during bottle closure) are provided. Conductivity data from the CTD sensors have been calibrated after the cruises using the conductivity measurements obtained from water samples collected during the cruises and analysed with a salinometer. Dissolved oxygen data from the CTD sensors have been calibrated after each cruise using the measurements done with the Winkler titration method. Bottle files were extracted and are uploaded here.