generate-ismip7-grid-files

Matlab scripts to generate grid description files used for cdo regridding.
(The grids did not change since ISMIP6)
See also python version of scripts

All regridding operations in ISMIP7 are based on these grid description files.

See also https://www.climate-cryosphere.org/wiki/index.php?title=Regridding_with_CDO

Based on work by Jeremy Fyke, Andy Bliss and others.

Main scripts for AIS and GrIS

ISMIP6_AIS_multigrid_generator_nc.m

ISMIP6_GrIS_multigrid_generator_nc.m

Will generate a number of grid description files for use with the cdo remap command (https://code.mpimet.mpg.de/projects/cdo).

Utilities

polarstereo_inv.m

generate_CDO_files_nc.m

wnc.m

Produce area fraction files

calcphilambda_epsg3031.m

calcphilambda_epsg3413.m

The resulting 'af' files can be used to compensate the grid projection error. Multiply 2D gridded variables with 'af' before spatial integration, summation or averaging.