I want to thank the Alfred-Wegener-Institut Helmholtz-Zentrum für Polar und Meeresforschung, and the Helmholtz infrastructure initiative "Frontiers in Arctic marine Monitoring" (FRAM) for funding this project. The writing of this manuscript was funded by a Sentinel North Postdoctoral Research Fellowship at Université Laval, Canada. Also, I want to thank the captain and crew, as well as all participants and mentors of the Sentinel North international PhD school (IPS) on boardCCGS Amundsen—in particular Simon Lambert Girard and Marcel Babin—for their help during the cruise in Baffin Bay. Similarly I like to thank the captain, crew and SPRS support staff from the Swedish icebreaker IB Oden for their friendly welcome. In particular, Mario Hoppmann, Philipp Anhaus and Lars Lehnert are acknowledged for their help during the measurements. A special thanks goes to the helicopter pilots on both ships providing the platform for aerial pictures. The design heavily relies on example code and the libraries "SPI", "SD", "Adafruit_GPS", "SoftwareSerial" and "LiquidCrystal" generously provided by the Arduino community. I also want to thank Anja Nicolaus for her help in the procurement of most necessary components. I thank the two anonymous reviewers and Editor Ian Allison, who helped improving this manuscript with valuable comments. （FRAM）