technicalpaper-2025

Code to reproduce experiments and figures in JAMES 2025 technical paper.

For section 3 (Application 1: Shallow Water Model in a Rotating System)

See the subdirectory shallow-water-model. To run code first include the necessary packages and scripts.

include("technical_paper.jl)

The two experiments, ensitivity analysis and data assimilation, are in energy_loss.jl and da_initcond.jl respectively. To run the energy loss

Ndays = 10
model, dmodel = run_energy_loss(Ndays)

and to run the data assimilation problem,

Ndays = 10
result = compute_initcond_newoptimizer(Ndays)

For section 4 (Application 2: Ocean General Circulation Model in a Re-entrant Channel Configuration)

See the linked submodule re-entrant-channel-model. Instructions on how to run and replicate results from the manuscript are in the README there.

For section 5 (Application 3: Ice Sheet Model)

See the linked submodule DJUICE. The two examples are under DJUICE.jl/examples/Sensitivity_friction_PIG/ and DJUICE.jl/examples/Sensitivity_BasalMelt_Amundsen/.

NOTE: ISSM is used only for comparisons. Please install ISSM and refer to its documentation for installation and usage.