Dataset for: A revised and expanded deep radiostratigraphy of the Greenland Ice Sheet from airborne radar sounding surveys between 1993–2019

The NetCDF v4 file (Greenland_radiostratigraphy_v2.nc) contains both the gridded depths of synthetic isochrones (i.e., at ages of interest that were not necessarily directly observed) and the age at regular normalized depths (10–80%) in the ice sheet. For each campaign that was traced, there is an HDF5-compliant .mat MATLAB file (Greenland_radiostratigraphy_v2_X_Y, where X is the year the campaign was flown and Y is the aircraft that was used) that contains the original traced and dated reflections for each traced segment in that campaign. If using Python instead of MATLAB, the mat73 package and its loadmat function can be used to load these files. An example Jupyter notebook is included that illustrates how to access the full contents of .mat file using Python and this package. There is also a zipped (.zip) archive for each campaign that contains GeoPackage (.gpkg) files for each traced segment of that campaign. Because of format restrictions, these GeoPackages only include the traced reflections' depths, with the ages in the metadata.NetCDF v4 文件（Greenland_radiostratigraphy_v2.nc）包含两类核心数据：一是合成等时线的网格化深度（对应研究关注的年代，此类年代未必经直接观测获得），二是冰盖内常规归一化深度（10%–80%）所对应的年代信息。 针对每个已开展的追踪航次，均配套有符合HDF5标准的MATLAB .mat格式文件（命名格式为Greenland_radiostratigraphy_v2_X_Y，其中X为该航次的飞行年份，Y为所使用的航空器型号），文件内存储了该航次中每个测段的原始追踪反射界面及其定年结果。若使用Python编程语言而非MATLAB，可通过mat73库及其loadmat函数加载此类文件。随数据集附带一则Jupyter Notebook示例，演示如何使用Python及该库读取.mat文件的完整内容。此外，每个航次还配有一个压缩（.zip）归档包，内含对应航次各测段的GeoPackage（.gpkg）文件。受格式限制，此类GeoPackage文件仅存储追踪反射界面的深度信息，年代信息则存放于元数据中。