Temperature after the cooling cycle from the sea ice mass balance buoy DTC55 during MOSAiC 2019/2020

Temperature and heating-induced temperature were measured along a chain of thermistors. Digital Thermistor Chain DTC55 is an autonomous instrument that was installed on drifting sea ice in the Arctic Ocean during the MOSAiC expedition on 26 August 2020. The thermistor chain was 5.12 m long and included sensors with a regular spacing of 2 cm. The initial ice thickness was 1.14 m, the snow thickness was 0.03 m, and the pond depth was 0.17 m. The resulting time series describes the evolution of temperature during the heating cycle of 20 s and after the heating cycle during the following 40 s as a function of geographic position (GPS), depth, and time between 26 August 2020 and 20 September 2020 in sample intervals of 6 hours. It also contains manually estimated positions of air-snow, snow-ice, and ice-water interfaces. The DTC was installed in the undeformed second/multiyear ice next to the Met City and the ice mass balance buoy 2020T84: doi:10.1594/PANGAEA.958397.

沿热敏电阻链开展了温度及加热诱导温升的观测。数字热敏电阻链（Digital Thermistor Chain, DTC55）为一套自主观测仪器，于2020年8月26日随MOSAiC科考航次部署于北冰洋漂流海冰之上。该热敏电阻链总长5.12米，传感器布设间距固定为2厘米。观测初始时冰厚1.14米、雪厚0.03米，融池水深0.17米。本数据集的时间序列记录了2020年8月26日至2020年9月20日期间的温度演化过程，涵盖20秒加热周期内及加热结束后后续40秒的温度变化，采样间隔为6小时，数据以地理位置（GPS）、深度及时间为变量。数据集同时包含人工估算得到的气-雪界面、雪-冰界面及冰-水界面的位置信息。该数字热敏电阻链部署于Met City与冰质量平衡浮标2020T84旁的未变形第二多年冰区，相关数据集DOI标识为：10.1594/PANGAEA.958397。