Temperature and heating-induced temperature difference measurements from SIMBA-type sea ice mass balance buoy 2015T18@en

Temperature 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 2015T18 (original name FMI_16) installed on drifting sea ice in the Southern Ocean during the expedition Polarstern PS89 (ANT30/2) in 2014/15. Data is available between 2015-01-03 20:00:00 and 2015-01-16 11:56:00. 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 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.

本研究通过搭载数米长热敏电阻链（thermistor chain）的SIMBA型海冰质量平衡浮标（SIMBA-type sea ice mass balance buoy），对大气、海冰及海洋中的温度与加热诱生温差剖面开展了测量。本次数据集由SIMBA 2015T18号浮标（原命名为FMI_16）记录，该浮标于2014/2015年随“极星号”（Polarstern）PS89科考航次（ANT30/2）部署于南大洋的漂流海冰之上。数据可用时段为2015年1月3日20:00:00至2015年1月16日11:56:00。该热敏电阻链为可变长度设计，总长可达5米，共包含240个传感器，传感器间距固定为2厘米。所得时间序列记录了以位置、深度与时间为变量的120秒加热周期内，30秒与120秒分辨率下的温度及温差演化过程。常规采样间隔介于每小时至每日之间，其中温度数据的采样频率最常配置为6小时一次，温差数据的采样频率最常配置为24小时一次。此外，本次数据集还涵盖了温度与地理位置的测量数据。本次数据集的预处理流程如下：已剔除存在明显矛盾（含缺失值）及GPS位置不合理的记录。本浮标作为FMI项目的一部分完成部署。