Physical oceanography data was acquired using a Seabird SBE9plus CTD underwater unit onboard RV METEOR during research cruise M183 between 13th July and 9th August 2022. The ship-based CTD-Rosette-System was additionally equipped with a Seabird SBE43 oxygen sensor. CTD data recording was controlled with SEASAVE software (version 7.26) on a computer linked to the SBE11plus V2 Deck Unit. Ship position was used to determine profiles location. Hydrographic data were processed to 1 sec bin resolution by using the SBE software (version 7.26.6). Pre-deployment data and obvious outliers were removed.