The Greenland Ecosystem monitoring program conducts CTD transect surveys each year in the Young Sound-Tyrolerfjord system. CTD instrument used were either SeaBird SBE-19plus, SeaBird SBE-25 or a RBR Maestro. The used CTD was always factory calibrated the same year. More information can be found in Sejr et al (2022) https://doi.org/10.1073/pnas.2207024119
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