A subset of temperature and heating-induced temperature difference profiles from 6 SIMBA-type sea ice mass balance buoys deployed in the central Arctic Ocean, August 2023 – April 2024

• Main Authors: Hoppmann, Mario, Cheng, Bin, Lin, Long, Lei, Ruibo, Nicolaus, Marcel
• Format: Dataset
• Language: English
• Published: PANGAEA 2024
• Subjects: 2023T100; 2023T104; 2023T107; 2023T109; 2023T110; 2023T99; Arctic Ocean; ArcWatch-1; AWI_PhyOce; AWI_SeaIce; Binary Object; Binary Object (File Size); Event label; File content; heat flux; Physical Oceanography @ AWI; Polarstern; PS138; PS138_129_Buoy_004; PS138_152_Buoy_005; PS138_178_Buoy_002; PS138_75_Buoy_003; PS138_9_Buoy_006; PS138_Heli_Buoy_002; SAMS Ice Mass Balance buoy; Sea ice mass balance; Sea Ice Physics @ AWI; Sea ice thickness; SIMBA; snow depth; temperature gradient; Arctic; Sea ice
• Online Access: https://doi.pangaea.de/10.1594/PANGAEA.967430; https://doi.org/10.1594/PANGAEA.967430

Temperature and heating induced temperature difference measurements were recorded by several SIMBA-type sea ice mass balance buoys (IMBs) deployed during RV Polarstern expedition PS138 to the central Arctic Ocean in August – September 2023. The profiles were obtained in the atmosphere, snow, ice, and ocean along a 4.8 m long thermistor chain with 240 thermistors at 0.02 m spacing, deployed on selected ice floes during ship-based ice stations. The data were transferred to a land-based server via the iridium satellite network. The measurement interval for the temperature measurements was typically 6 h, whereas the heating cycle was performed once per day at midnight. Auxiliary data include 1 m air temperature, GPS position, compass heading, and instrument tilt. This entry consists of a preprocessed sub-dataset from 6 out of 11 deployed units, and includes data from initial deployment in August/September 2023 until early April 2024, when some of the buoys were still operational. The data provided here was downloaded from www.meereisportal.de on 11 April 2024, and is a result of the standard processing at that date without further modification. A fully processed and quality-controlled dataset of all PS138 SIMBA buoys will be made available and linked to after the buoys have stopped reporting.