This is the code, which is based on icepack, used to produce the results in:
Joughin, I., Shapero, D., Dutrieux, P. & Smith, B. Ocean-induced melt volume directly paces ice loss from Pine Island Glacier. Sci Adv 7, eabi5738 (2021).
Joughin, I., Shapero, D., Smith, B., Dutrieux, P. & Barham, M. Ice-shelf retreat drives recent Pine Island Glacier speedup. Sci. Adv. (2021) doi:10.1126/sciadv.abg3080.
For further details on the associated data, meshes, and examples here.