Visala WXT520 weather station data at the Cavity and Channel AMIGOS-III sites

Visalia WXT520 weather station hourly data spanning 20 months (with data gaps) at the Cavity and Channel AMIGOS-III sites (Automated Meteorology-Ice-Geophysics Observing System) on the Thwaites Eastern Ice Shelf, Antarctica. Data are reported as the values from the sensors delivered through the Iridium modem via SBD from the AMIGOS. The units were installed at ~6.5m above the surface initially, with snow accumulation gradually reducing that to an estimated 3.5 m after 20 months. The stations report wind direction and speed, air temperature, humidity, pressure, and station power. The two sites latest positions (01 Oct, 2021) are: Cavity AMIGOS: 75.037°S, 105.58°W Channel AMIGOS: 75.049°S, 105.44°W both stations are moving NNE at roughly 850 m.yr, having accelerated from about 650 m/yr in early 2020.

本数据集为部署于南极洲思韦茨东部冰架的Cavity与Channel AMIGOS-III站点（自动化气象-冰-地球物理观测系统，Automated Meteorology-Ice-Geophysics Observing System）上的Visalia WXT520气象站逐小时观测数据，时间跨度为20个月，存在数据间隙。观测数据为各传感器采集后，经AMIGOS系统通过铱星调制解调器（Iridium modem）以短突发数据（Short Burst Data, SBD）形式传输的传感器原始观测值。该类气象站初始安装高度约为地表以上6.5米，经过20个月的积雪堆积后，实际离地高度估算降至约3.5米。站点观测参数涵盖风向、风速、气温、相对湿度、气压以及站端供电状态。两个站点在2021年10月1日的最新位置坐标为：Cavity AMIGOS站：南纬75.037°，西经105.58°；Channel AMIGOS站：南纬75.049°，西经105.44°。目前两个站点均以约850米/年的速度向东北偏北方向移动，相较于2020年初约650米/年的移动速度有所加快。