Temperature after the cooling cycle from the sea ice mass balance buoy DTC52 during MOSAiC 2019/2020

Temperature and heating-induced temperature were measured along a chain of thermistors. Digital Thermistor Chain DTC52 is an autonomous instrument that was installed on drifting sea ice in the Arctic Ocean during the MOSAiC expedition on 27 August 2020. The thermistor chain was 2.36 m long and included sensors with a regular spacing of 2 cm. The initial ice thickness was 1.32 m, the snow thickness was 0.05 m, and the freeboard 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 27 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 Remote Sensing site.

沿热敏电阻链对温度及加热诱导产生的温升进行了测量。数字热敏电阻链（Digital Thermistor Chain, DTC52）为一套自主式观测仪器，于2020年8月27日随MOSAiC科考项目部署在北冰洋的漂流海冰之上。该热敏电阻链总长2.36米，传感器以2厘米的规则间距均匀布设。初始海冰厚度为1.32米，积雪厚度0.05米，海冰干舷高度0.17米。所得时间序列以地理位置（GPS）、探测深度与时间为自变量，刻画了2020年8月27日至2020年9月20日期间，20秒加热周期内及加热结束后后续40秒内的温度演化特征，采样间隔为6小时。该数据集同时包含人工估算得到的气-雪界面、雪-冰界面以及冰-水界面的位置信息。该DTC部署于遥感观测站点旁的未变形二年/多年海冰区域。