Measurements of ice mass balance and temperature from autonomous Seasonal Ice Mass Balance buoys in the Arctic Ocean, 2019-2020.

The dataset contains measurements made from four autonomous Seasonal Ice Mass Balance (SIMB) buoys. The buoys were deployed in the fall of 2019 as part of the Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC) Distributed Network at sites L1, L2, L3, and at the Central Observatory. They were collocated with platforms making observations of the atmosphere and ocean. Each buoy measured 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. 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.

本数据集包含4台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2019年秋季部署，作为北极气候多学科漂流观测站（Multidisciplinary drifting Observatory for the Study of Arctic Climate, MOSAiC）分布式观测网的组成部分，布设点位涵盖L1、L2、L3站点及中央观测站。浮标与开展大气及海洋观测的平台共址布设。每台浮标可采集位置、大气压强、空气温度，以及从大气经积雪、海冰直至上层海洋的垂直温度剖面。浮标搭载冰面上方朝下探测声呐以追踪冰面位置，水下朝上探测声呐则用于监测海冰底部位置。垂直温度探测串上的传感器间距为0.02米（m）。观测数据每4小时采集一次，并通过铱星（Iridium）通信系统回传。每台SIMB浮标对应一个csv格式数据文件。