A collection of datasets containing data measured by various CTD instruments which have been deployed at the OBSEA cabled underwater observatory since May 2009 is now freely available at https://doi.pangaea.de/10.1594/PANGAEA.902215.
Part of the EMSO infrastructure, OBSEA is a permanent underwater cabled seabed observatory located in front of the Catalan’s coast near Barcelona, at 20 m depth which is used as a test site for different experiments related with marine sensors. It has a sea station and a ground station, which include a surface buoy equipped with weather station and camera and a coastal cabled system (seabed platform).
More information on the OBSEA observatory here.