Raw seawater temperature, conductivity and salinity obtained at different depths by CTD buoy 2019O3 as part of the MOSAiC Distributed Network

A set of eight ice-tethered buoy systems (2019O1 to 2019O8) were deployed by the Akademik Fedorov in the Northern Laptev Sea in early October 2019 as part of the MOSAiC Distributed Network. Each buoy consisted of 5 Seabird SBE37IMP Microcat CTDs mounted along an inductive modem tether at depths of 10, 20, 50, 75 and 100m. The buoys were installed on stable sea ice floes (designated as “M-sites”) at a distance of 15-35 km around the main MOSAiC ice camp, and co-located with Snow Buoys, Ice Mass Balance Buoys and D-TOP ocean profilers. The individual instruments were programmed to record oceanographic data internally at 2-minute intervals. The surface unit of the buoy prompted the instruments for an additional measurement every 10 minutes, which was then transmitted to a base station via iridium along with GPS position and time, as well as surface temperature. After a several months long drift through the Central Arctic Ocean, 4 out of 8 buoys were recovered in August 2020, and the internally recorded data from the CTDs were secured. The attached zip archive comprises the unprocessed 10-minute data transmitted by buoy 2019O3 (.txt file), as well as the 2-minute data downloaded and converted from the 5 individual CTDs after their recovery (either .cap or .cnv). A processed and quality controlled version of this dataset will be supplemented and linked to upon completion. A link to a data paper describing the processing will be given below.

2019年10月初，“费奥多罗夫院士”号科考船在拉普捷夫海北部部署了8套冰系泊浮标系统（编号2019O1至2019O8），作为MOSAiC分布式观测网络（MOSAiC Distributed Network）的组成部分。每套浮标搭载5台海鸟（Seabird）SBE37IMP Microcat型温盐深测量仪（Conductivity, Temperature, Depth, 简称CTD），沿感应调制解调器系绳分别布设于10、20、50、75和100米水深处。这些浮标布设在MOSAiC主冰营周边15至35公里范围内的稳定海冰浮冰上（编号为"M站点"），并与积雪浮标、冰质量平衡浮标（Ice Mass Balance Buoys）及D-TOP型海洋剖面仪共址部署。所有单台仪器均被预设为以2分钟的时间间隔在本地存储海洋学观测数据。浮标的水面单元每10分钟触发仪器执行一次补充测量，随后将该测量数据连同GPS位置、时间及表层水温通过铱星（Iridium）通信系统传输至基站。经过数月在北极中央海域的漂流后，8套浮标中有4套于2020年8月被回收，CTD的内部记录数据得以完整获取。附带的压缩存档包含浮标2019O3传输的未处理10分钟数据（.txt文件），以及回收后从5台单台CTD下载并转换得到的2分钟数据（格式为.cap或.cnv）。本数据集经过处理与质量控制的版本将在完成后补充并提供链接，相关描述处理流程的数据论文链接将在下文给出。