5 Model Input Datasets

Both the coupled and uncoupled CSIM require a minimum of three files to run:

• global_${ICE_GRID}.grid is a binary file containing grid information and is renamed
  data.domain.grid
  when it is copied to the executable directory.
• global_${ICE_GRID}.kmt is a binary file containing land mask information and is renamed
  data.domain.kmt.
• iced.0001-01-01.${ICE_GRID}.20lay or iced.0001-01-01.gx3v5.040213 are binary files containing initial condition information for the gx1v3 and gx3v5 grids, respectively. The thickness distribution in this restart file contains 5 categories, each with 4 layers.

Depending on the grid selected in the scripts, the appropriate global* and iced* files will be copied and renamed in the executable directory. Currently, only gx3v5 and gx1v3 grids are supported for the ice and ocean models.

An additional data file is necessary to use the ocean mixed layer within the ice model, depending on the specified grid:

• pop_frc_gx1v3_010815.nc contains monthly averaged ocean forcing from POP output.
• pop_frc_gx3v5_040212.nc same as above, but for the gx3v5 grid.

This file is renamed oceanmixed_ice.nc when it is copied into the executable directory.