historical ice thickness evolution

[jn23ban]

Dear Author,

I am a beginner with OGGM. Currently, I need to calculate the historical ice thickness evolution (1980-2020) for about 20,000 glaciers. After reading the tutorials, I understand that the centerlines data does not include spinup, and that there may be errors in the elev_bands data when calculating the expansion of glacier areas in history. Could you please advise me on which data would be better to use for my calculations? I am not sure if I fully understand the differences, so I would appreciate your guidance. Thank you!

[pat-schmitt]

Hi,

to get historical ice thickness evolution you can use the preprocessed directories as explained in the documentation https://docs.oggm.org/en/latest/shop.html#pre-processed-directories or in the tutorials https://oggm.org/tutorials/stable/notebooks/10minutes/preprocessed_directories.html. As described in the documentation you can find files with the suffix _spinup_historical containing the dynamic glacier evolution from 1979 - 2020. Note, however, that the data before the RGI-date (around 2000) should be seen more as a spinup and not as a reconstruction.

Further, if you plan to use OGGM in the future you should join the OGGM slack channel to get support about the usage of the model. GitHub is meant to be used only for discussions about the code itself.