Physical oceanography measured with an Underway-CTD (CTD-UW) during the Professor Multanovskiy expedition Transarktika-2019 Leg 4/2 in 2019, Arctic Ocean ...

• Main Authors: Hölemann, Jens A, Malinovskiy, Stanislav, Evers, Florian, Reus, Klaus, Chen, Viola, Kassens, Heidemarie
• Format: Dataset
• Language: English
• Published: PANGAEA 2023
• Subjects: Arctic Ocean; East Siberian Sea; Laptev Sea; shelf-basin transects; underway CTD; Event label; DATE/TIME; LATITUDE; LONGITUDE; ELEVATION; Pressure, water; DEPTH, water; Temperature, water; Temperature, water, potential; Conductivity; Salinity; Density, sigma-theta 0; CTD, underway; Transarktika-2019_Leg4; Professor Multanovskiy; CATS - The Changing Arctic Transpolar System CATS; Laptev Sea System LSS; laptev
• Online Access: https://dx.doi.org/10.1594/pangaea.962032; https://doi.pangaea.de/10.1594/PANGAEA.962032

Underway-CTD (CTD-UW) data were collected during an September-October 2019 expedition to the Laptev and East Siberian Seas aboard the RV Professor Multanovskiy. The underway CTD manufactured by Ocean Science is a self-contained free-falling probe measuring temperature, conductivity and depth while the ship is transiting. The UCTD was operated while the ship was transiting with 4 - 10 knots. The UCTD probe records the start time of the measurements and stores 16 samples each second internally. The exact location of each profile was subsequently found based on the time stamp from the cruise track. The unpumped conductivity sensor has a slower response time than the temperature sensor, which makes the computation of salinity from conductivity and temperature potentially spiky, especially in the pycnocline or in frontal regions. We followed the recommendation of the manufacturer to calculate salinity with Seabird processing software. The salinity is given as Practical Salinity (PSU). In shallower waters (<300 ...