Supplementary material for 'Reorganisation of subglacial drainage processes during rapid melting of the Fennoscandian Ice Sheet' This repository two zipped directories: Default_results_repository includes ISSM md (model) files, saved in the .mat MATLAB format for every model submission reported on in the corresponding manuscript. For the default model runs, the result .outbin files are also include for the ISSM ice sheet spinup, the GlaDS steady state run, and the GlaDS transient forcing run. For all other models runs, the included .mat files are executable such that running the included models will reproduce the rest of the results discussed in the paper. Manu_scripts includes the input geophysical data, shapefiles on Murtoo field locations from Ahokangas et al. (2021), glacial landforms shapefile data from Palmu et al. (2021), example input scripts used to produce the results discussed in the manuscript, and functions to plot those results are included. Note, the example scripts (A_ISSM_ice_spinup, B_GlaDS_seady_state, C_GlaDS_transient) will not run without modification to the specific users cluster and storage setup and are instead intended as guides to use for one's own model setup. For our modelling we used the Ice-sheet and Sea-level System Model (Larour et al., 2012) revision 27448 available from: https://issm.jpl.nasa.gov/ (last accessed on 06-09-2023). .

This work forms part of the RewarD project (MUST consortium, University of Turku), funded by the Academy of Finland (grant numbers 322243/J.M and 322252/A.O). A.J.H is funded by the European Space Agency Internal Fellowship program, C.F.D is funded by the Canada Research Chair program (950-231237). All simulations were run on the Digital Research Alliance of Canada compute cluster, and we thank the European Union and the Finnish Geological Survey for enabling access to the data used to parameterise our model