A recently (April 2015) calibrated SBE 9/11+ CTD, SN-0942, was used to measure temperature, salinity, and turbidity profiles. The sensors mounted on the CTD were an SBE3 temperature sensor SN-001219, SBE4 conductivity sensor SN-003262, a Digiquatz pressure sensor SN-127486, an SBE43 oxygen sensor SN-0431932, a Wetlab CStar beam transmission meter SN-CST-1406DR with a path length of 25 cm, a Chelsea PAR/irradiance sensor SN-118, and a Chelsea Aqua 3 fluorometer SN-088008. The CTD was mounted in a special rack, which contained 22 Niskin water samplers. Two Niskin water samplers were taken off the rosette to make space for the dual-head LADCP set up (Lowered Acoustic Doppler Current profiler). To control the temperature measurements an SBE35 Deep Ocean Standards thermometer was mounted next to the temperature sensor of the CTD. Reference temperature samples were taken with this when water samples were taken with the Niskin samplers. At every bottle stop the CTD operator waited one minute to allow the bottle to be flushed properly. After the bottle was closed another minute was waited to allow the SBE35 to register temperature. The water from these samplers was sub-sampled for the determination of dissolved oxygen and salinity on most stations and for nutrients and δO18 on the stations near Greenland.