Ice Mass Balance Buoys 2024

The dataset contains measurements made from autonomous Seasonal Ice Mass Balance (SIMB) buoys. The buoys were deployed throughout 2024 as part of several field campaigns. Each buoy measured snow and ice surface and ice bottom position, barometric pressure, air temperature, and a vertical profile of temperature from the air, through the snow, through the ice, and into the upper ocean. An above-ice downward looking sounder tracked the position of the surface and an underwater upward looking sounder tracked the position of the ice bottom. Initial measurements of snow depth and ice surface position are used to infer snow depth. Sensors were placed every 0.02 meters (m) on the vertical temperature string. Measurements were made every four hours and results were transmitted via Iridium. There is one csv file for each SIMB, one plot for each SIMB, and a file containing initial conditions, deployment notes, and times when buoys slip in relation to the ice.

本数据集包含来自自主式季节冰质量平衡（Seasonal Ice Mass Balance, SIMB）浮标的观测数据。该批浮标于2024年全年部署，作为多项野外科考任务的组成部分。每座浮标均可观测雪面、冰面及冰底位置、气压、空气温度，以及从大气经积雪、冰层直至上层海洋的垂直温度剖面。浮标搭载的冰上向下探测声呐可追踪冰面位置，水下向上探测声呐则可追踪冰底位置。初始的积雪深度与冰面位置观测数据，可用于推算积雪深度。垂直温度探测串上的传感器布设间距为0.02米（m）。观测每4小时进行一次，数据通过铱星（Iridium）系统传输。每座SIMB浮标对应一份CSV格式数据文件、一幅可视化结果图，另有一份文件包含初始状态、部署记录以及浮标相对冰层滑移的时刻信息。