38 Cruise Report, RV ATAIR, Cruise 067I033-1, Bremerhaven – Thybor?n – Aberdeen, 23 Jul – 15 Aug 2024 Figure 7.2. Spatial distribution of the absolute wind strength and direction during cruise 067I033-1. Wind information is reported on the Beaufort scale (see colour bar) and averaged over 15 min intervals. The stick orientation denotes the wind direction. Data taken from the DSHIP database. 7.2 Thermosalinograph & Fluororescence/Turbidity The thermosalinograph (TSG) system aboard RV ATAIR is operated as a throughflow system with the pure seawater inlet installed in the vessel’s hull at a depth of 4 m. It consists of a SBE21 Seacat thermosalinograph device delivering near-surface conductivity and internal temperature measurements. These are matched with an additional external temperature sen- sor of type SBE38, which is located near the water inlet. Next to the TSG system, a dual- wavelength sensor of type WET Labs Environmental Characterization Optics (ECO) is installed delivering near-surface underway measurements of fluorescence and turbidity through optical measurements at fixed wavelengths. Table 7.1 provides an overview of the sensor specifica- tions. Data are recorded at time steps of 10 sec.