10.1594/PANGAEA.967900Nicolaus, MarcelMarcelNicolaus0000-0003-0903-1746Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, BremerhavenKatlein, ChristianChristianKatlein0000-0003-2422-0414Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, BremerhavenPANGAEA2026Autonomous buoyIce mass balanceTemperature thermistorSAMS Ice Mass Balance buoyCurrent sea ice maps for Arctic and Antarctic (meereisportal.de)Physical Oceanography @ AWI (AWI_PhyOce)Sea Ice Physics @ AWI (AWI_SeaIce)2018-05-05T01:00:12/2018-10-18T22:59:48Bundled Publication of Datasets10.1594/PANGAEA.973385https://data.meereisportal.de/relaunch/buoy.php?lang=en&active-tab1=method&active-tab2=buoy&buoyname=2018T50&singlemap=4 datasetsapplication/zipCreative Commons Attribution 4.0 InternationalTemperature and heating-induced temperature difference profiles were measured through the atmosphere, sea ice, and ocean using a SIMBA-type sea ice mass balance buoy equipped with a several meter long thermistor chain. The present dataset was recorded by SIMBA 2018T50 (original name Awi_32r) installed on drifting sea ice in the Arctic Ocean during the expedition Alert MAPLI in 2018. Data is available between 2018-05-05 00:00:00 and 2018-10-21 02:01:00. The thermistor chain was Variable 5 m long and included 240 sensors with a regular spacing of 2 cm. The resulting time series includes the evolution of temperature and temperature differences at 30 s and 120 s during a heating cycle of 120 s as a function of location, depth and time. The sampling intervals were usually between hourly and daily, but were most frequently configured to 6 hours for temperature, and 24 hours for temperature differences. In addition to temperatures and geographic location, barometric pressure, ~1 m air temperature, instrument tilt, and compass heading were measured. The present dataset was processed as follows: obvious inconsistencies (missing values) and unrealistic values of GPS position have been removed. This instrument was deployed as part of the project Sea Ice Physics @ AWI (AWI_SeaIce).-80.44385-50.03604000000001470.97165383.57122Arctic Ocean