Instrumented Remotely Operated Vehicle (ROV) under-ice observations

Data were collected during deployments of an instrumented Remotely Operated Vehicle on 5 sampling days to determine sea ice physical properties and measure transmitted under-ice radiance spectra (combined with surface irradiance measurements) to estimate the spatial distribution and temporal development of ice algal biomass in land-fast sea ice. The ROV was instrumented with a navigation/positioning system (linked to surface GPS), upward-looking sonar and accurate depth sensor (Valeport 500 (to determine sea-ice draft)), and a upward-looking TriOS Ramses radiance sensor as well as several video-cameras collecting under-ice footage. Parallel measurements included surface irradiance measurements.A readme file in the download explains the folder structure of the dataset.本数据集的数据采集自5个采样日期间搭载仪器的遥控水下机器人（Remotely Operated Vehicle, ROV）的部署作业，旨在测定海冰物理特性，测量透射冰下辐射光谱（结合表层辐照度测量数据），以估算固定海冰中冰藻生物量的空间分布与时间演化特征。 该遥控水下机器人搭载了导航定位系统（与表层全球定位系统（Global Positioning System, GPS）联动）、向上观测声呐与高精度深度传感器（Valeport 500，用于测定海冰吃水）、向上观测型TriOS Ramses辐射传感器，以及多台用于采集冰下影像的摄像机。 同步测量内容包含表层辐照度测量。 下载包中的自述文件（readme）将说明本数据集的文件夹组织结构。