Finding a world map with an isostatic rebounded Antarctica

[waldronate]

[ EDIT: read my next two posts before wandering too far afield ]

I suppose it does come down to what you want to do with them. There is also a major element of your familiarity with the subject matter (especially GDAL and/or QGIS) and what level of accuracy you're interested in.

https://nsidc.org/data/user-resource...graphic-latlon shows how to take a polar stereographic map like the Antarctica ones and convert it back to the basic equirectangular one.

The most direct way might be to send an e-mail to the folks who published those maps asking if they have published the DEMs. With the digital elevation models in hand, there should be any number of ways to get shaded data out and those DEMs are likely to come with metadata that's easier than eyeballing it from low-resolution data.

Many years ago, I wrote a crude tool for eyeballing data. You'd need to play with settings a lot to get a good result, but your input data is low enough resolution that it probably won't be too bad. That's http://fracterra.com/ReprojectImage.zip if you are willing to install a Windows executable from the internet. It looks like I lost my "www." somewhere along the way, but I'm not going to worry about it. It's also not https as I never bothered to get a certificate, so your browser may or may not complain. I did a little trimming and reprojecting earlier today and came up with the attached image. You can probably do better with a little more patience than I have. Precision tools like GDAL and QGIS will let you do a much better job, of course.