How to Create HD Rebound GreenLand Map from Image Data

[worldbuilding pasta]

It looks like the "topography change" parameter in each netcdf file is the data you want, so you'd need to take current bedrock topography data of these areas (think that's included in the etopo1 dataset), project it to the same projection as these datasets, as listed in the readme (I think this should be possible with Qgis), and then add this data (and perhaps subtract ~65 meters of global sea level rise).

[PecuTheGreat]

"so you'd need to take current bedrock topography data of these areas (think that's included in the etopo1 dataset)" sorry, can you elaborate?. Like a text data in etopo?.

"project it to the same projection as these datasets" Okay, I have reprojected them and got these image data, the .TIFF files project like that also, when I input them in GIS over the ETOPO layer but I don't know how to then "add" it or "subtract 65 metres" is like a code function? cuz I haven't gotten into coding(its call GDAL, right?) in QGIS yet.