How to Create HD Rebound GreenLand Map from Image Data

[PecuTheGreat]

So, this famous study https://www.nature.com/articles/s41598-022-15440-y#Fig3 provided its data source as this https://arcticdata.io/catalog/view/d...8739/A2280509Z however, of all the image data provided none is of the final reconstruction just of the data used to do the reconstruction. So, does anyone know how I can combine these images to generate a higher quality version of this? https://media.springernature.com/ful...ML.png?as=webp

The extracted .TIFF

https://mega.nz/file/OQU3hDqB#Krx__I...edhhF_D-tm0se4

https://mega.nz/file/OZlSALCS#8TaUMG...UkJZ67Ms9hRZ7U

https://mega.nz/file/jVV13bLb#yvm4Dw...RRpFxi7eW0_1QM

https://mega.nz/file/Ld8HXBzJ#_tn3-o...Ry16cUzDK4YuRA

https://mega.nz/file/LZ9CxAxS#ScRGQu...Vj5NSIdYAQqshk

https://mega.nz/file/bVFTRRLQ#ZFY6A7...JT8DRdAc0Zq2u4

https://mega.nz/file/HEVFESBa#GKKMB0...KkxUe0OrUFxLLM

[waldronate]

Did you try emailing the authors to see if they have a higher-resolution version that they might be willing to share?

When you tried the software suggested in the README.md on that page, what was the result?

[PecuTheGreat]

I am still trying how to learn the software but they didn't give any detailed break down on how they combined the images so its taking a while.

I don't exactly need the rebound greenland, tho I guess it won't hurt to ask. I want to use some of their image data on some Oligocene Greenland map I found a while ago and I want to know how they used it so I don't go making stupid mistakes.

[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.

[worldbuilding pasta]

I didn't have an exact sequence of steps in mind, just in general that's how you'd have to approach the problem, and indeed that may require putting scripts together to work with the data arrays rather than trying to make it all work through image processing.

[waldronate]

https://docs.qgis.org/3.34/en/docs/t...g/no_data.html might be helpful for using QGIS to add two layers and a constant together. The tool seems to be called the "raster calculator".