Xctd (Expendable Conductive-Temperature-Depth) data were collected north of Greenland during MOSAiC leg5, when R/V Polarstern was relocated north between leg4 and leg5. The data were collected mid-August 2020. The data contained temperature, salinity and pressure from the surface to 500 m depth. The data are despiked and corrected from a salinity offest of 0.03. The data were collected by team OCEAN during leg 5 ( Zoe Koenig, Mario Hoppmann, Salar Karan and Jacob Allerholt) at the aft of the ship.