Dataset and Supplementary Material 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_Greenland_Z, 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. The movie (mov1.mp4) shows all 496 traced segments in chronological sequence, corrected for surface elevation as in Fig. 3e. A 50-km portion of each radargram is shown in each frame, which is translated by 20 km between each frame and is recorded at 5 frames per second. Traced and dated reflections are shown in every other frame to enable visual evaluation of the traced radiostratigraphy. An inset map of Greenland shows all traced segments, highlighting the current segment in blue and the current frame in red. The color range of the displayed radargram is rescaled for each frame to the mean ± two standard deviations of the radargram amplitudes within that frame. VLC or QuickTime are recommended for viewing this video.