10.1594/PANGAEA.967903Cheng, BinBinCheng0000-0001-8156-8412Finnish Meteorological InstituteArndt, StefanieStefanieArndt0000-0001-9782-3844Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, BremerhavenPANGAEA2026Autonomous buoyIce mass balanceTemperature thermistorSAMS Ice Mass Balance buoyPS111PolarsternCurrent sea ice maps for Arctic and Antarctic (meereisportal.de)Physical Oceanography @ AWI (AWI_PhyOce)Sea Ice Physics @ AWI (AWI_SeaIce)2018-02-16T16:00:40/2018-04-24T00:03:32Bundled Publication of Datasets10.1594/PANGAEA.973384https://data.meereisportal.de/relaunch/buoy.php?lang=en&active-tab1=method&active-tab2=buoy&buoyname=2018T49&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 2018T49 (original name FMI_0408) installed on drifting sea ice in the Southern Ocean during the expedition Polarstern PS111 (ANT33/2,FROST) in 2018. Data is available between 2018-02-16 15:20:00 and 2018-04-24 02:04:00. The thermistor chain was Variable 5 m long and included 241 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 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 project FMI.-47.97248999999999-29.297270000000026-76.33725-74.11984Antarctic Ocean