Surface heights over a traverse route from S16 to Dome Fuji, East Antarctica as measured by kinematic GNSS surveys in 2012-2013 and 2018-2019

Kinematic global navigation satellite system (GNSS) measurements provide in-situ data that are crucial for detecting subtle changes in the surface height of glaciers and ice sheets. Owing to their accuracy, which is typically less than half a meter, surface heights derived from kinematic GNSS surveys are both valuable and essential for evaluating changes in geometry of glaciers and for assessing satellite altimetry. Here, we present a surface height dataset derived from kinematic GNSS measurements covering a horizontal distance of approximately 1,200 km along an inland traverse route in East Antarctica from a coastal point near Syowa Station and Dome Fuji. More than 1,750,000 GNSS survey data points were processed and saved in CSV format. Based on our error analysis, the accuracy of the height data is less than 0.4 m in the horizontal and vertical directions. This dataset can be used to investigate surface height changes by comparing it with other datasets obtained in the past, as well as those from future remote sensing and in-situ observations.动态全球导航卫星系统（Kinematic Global Navigation Satellite System，GNSS）测量可获取原位观测数据，对于探测冰川与冰盖表面高程的细微变化至关重要。由于其测量精度通常低于0.5米，通过动态GNSS测量获取的表面高程数据，在评估冰川几何形态变化以及校验卫星测高结果方面均具有极高的价值与必要性。本研究构建了一套基于动态GNSS测量的表面高程数据集，该数据集覆盖南极东部一条内陆踏勘路线，该路线从昭和站（Syowa Station）附近的沿海点位延伸至富士冰穹（Dome Fuji），水平跨度约1200千米。本次研究共处理并保存了超过175万个GNSS测量数据点，数据存储格式为逗号分隔值（CSV）。经误差分析验证，该表面高程数据的水平与垂直方向测量精度均低于0.4米。该数据集可通过与历史观测数据集、未来遥感及原位观测获取的数据集进行对比，用于开展表面高程变化相关研究。