The Sicily Channel (SC) site has been monitored for thermohaline properties and water mass exchanges since 1993 by two moorings located within parallel trenches in the 150 km-long transect between Tunisia and Sicily. The north-eastern ISMAR mooring (called C01) is typically equipped with instruments recording pressure, temperature, conductivity, dissolved oxygen and current velocity. This dataset is the result of CTD records at nominal depth of 400 m from 2013 to 2025. The nominal depth is however subject to slight variations between servicing of the mooring. The pressure, temperature, conductivity, salinity and dissolved oxygen have been recorded by means of SBE37 probes, with an accuracy of 0.0001°C, 0.0003 S/m, 0.1 dB, for Temperature, Conductivity, Pressure respectively. Oxygen sensor has an accuracy larger of ± 3 μmol/kg (0.07 ml/L, 0.1 mg/L). Salinity is PSS-78 (Practical Salinity). By definition, PSS-78 is valid only in the range of 2 to 42 psu. Sea-Bird uses the PSS-78 algorithm in SBE Data Processing software. The instrument have been regularly calibrated and even compared with CTDO cast prior recovery and after mooring deployment. Dissolved Oxygen is regularly compared with physical water samples analysed onboard with Winkler titration method used to measure Dissolved Oxygen in water samples.

Files: SICO1_393_SBE379071_20131018_20140401.nc, SICO1_396_SBE379071_20150806_20151201.nc, SICO1_396_SBE379071_20151203_20160326.nc, SICO1_396_SBE379071_20180522_20180828.nc, SICO1_396_SBE1650095_20160327_20161122.nc, SICO1_403_SBE379071_20171031_20180522.nc have full set of variables.Files: SICO1_396_SBE379071_20150323_20150608.nc, SICO1_403_SBE379071_20200315_20210325.nc, SICO1_400_SBE372715_20221020_20230407.nc, SICO1_400_SBE372715_20230407_20240321.nc have Pressure, Temperature, Conductivity and Salinity.File: SICO1_400_SBE372434_20240321_20250806.nc has Temperature and Conductivity