Physical Oceanography measured with CTD on Triaxus topAWI (towed ocean profiler of the AWI) during MERIAN cruise MSM93 ...

• Main Authors: Hofmann, Zerlina, von Appen, Wilken-Jon, Mathieu, Laura, Hagemann, Jonas, Engicht, Carina, Kuhlmey, David, Becker, Hauke
• Format: Dataset
• Language: English
• Published: PANGAEA 2022
• Subjects: Fram Strait; Triaxus; Event label; DATE/TIME; LATITUDE; LONGITUDE; DEPTH, water; Pressure, water; Temperature, water; Salinity; Temperature, water, potential; Density, sigma-theta 0; Oxygen; Oxygen saturation; Attenuation, optical beam transmission; Fluorometer; Radiation, photosynthetically active; Number of observations; Towed Ocean Profiler; CTD-TRIAXUS; MSM93; Maria S. Merian; Arctic Amplification AC3; FRontiers in Arctic marine Monitoring FRAM; Physical Oceanography @ AWI AWI_PhyOce; Arctic
• Online Access: https://dx.doi.org/10.1594/pangaea.940010; https://doi.pangaea.de/10.1594/PANGAEA.940010

The MacArtney Triaxus extended version is a remotely operated towed vehicle (ROTV). It is towed behind the ship between 2 and 10 knots and can undulate in a saw tooth pattern between a few meters below the surface and 350m depth. The umbilical provides power and a fiber optic link to sensors that are mounted on the Triaxus (see SensorWeb). The different data streams require separate processing. Here we report the data from the Seabird 911+ dual pumped CTD system mounted on the Triaxus. The provided data are 0.5 second or 0.5 meter averages. The operations included profiling mode and constant depth mode. Depth data comes from the CTD's pressure sensor. Position data (latitude, longitude) comes from the ship's GPS system and is corrected for the length of the umbilical behind the ship. Standard Seabird Data processing (SBE Data Processing) were applied. A front in the open ocean region in the vicinity of the ice edge in Fram Strait was searched for with a ~100km long constant depth Triaxus transect on July 8. ...