Underway temperature and salinity data was collected along the cruise track with two autonomous thermosalinograph (TSG) systems, each consisting of a SBE21 TSG together with a SBE38 Thermometer. Both systems worked independent from each other throughout the cruise. While temperature is taken at the water inlet in about 5 m depth, salinity is estimated within the interior TSG from conductivity and interior temperature.

Salinity was calibrated independently for both TSGs: Value added to salinity data TSG1 = 0.07662. Value added to salinity data TSG2 = 0.08759. No correction against independent data was performed for temperature. Finally, TSG1 was chosen for publication. For details to all processing steps see Data Processing Report.