Krahmann, Gerd; Mehrtens, Hela (eds.) (2021): SFB754 UCTD and rapidcast data [dataset editorial publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.926529

During the second funding phase (2012-2015) a new CTD system became available that could be deployed from a moving 185 ship. First a Teledyne Oceanscience UCTD and later a Teledyne Oceanscience Rapidcast system were acquired and deployed successfully on several cruises (see Table C8). They allowed for the sampling of water masses at high horizontal resolution (ranging from less than 1 km for the Rapidcast system to 10 km for deep UCTD casts) with good accuracy of the pressure, temperature, and conductivity sensors. Processing of the data involved mostly the fall-rate dependent correction of the thermal lag of the conductivity sensor and followed the approach described by Ullman and David (2014). Subsequently 190 the corrected data was calibrated against the calibrated coincident Thermosalinograph and the calibrated nearby CTD data.

The typical accuracies of the final pressure, temperature, and salinity data are 1 dbar, 0.01 °C, and 0.01 g/kg, respectively.