UM Helper Scripts

A number of helper scripts are available at NCI to assist with working with UM files and model runs.

The following scripts are courtesy of Martin Dix from CAWCR. These files are available on Raijin under ~access/apps/pythonlib/umfile_utils

Information

um_fieldsfile_dump.py -i FILE: Print FILE's header information
lbcdump.py -i INFILE: Get information about a lateral boundary condition file

change_calendar.py: Convert from Gregorian to a 360 day calendar
change_calendar365.py: Convert from 360 day to Gregorian calendar
change_dump_date.py FILE: Change the file's date
change_endianness.py -i INFILE -o OUTFILE: Swap between big/little endian format (Files used by the model should be big-endian)
change_stashcode.py -v OLD,NEW FILE: Change the STASH code of variables in the file
count_land.py FILE: Count the number of land points in a land mask
fix_polar_anom.py FILE: Fix anomalies in polar fields
interpolate_ancillaries.py -i INFILE -o OUTFILE -m MASK: Convert all the fields in INFILE to use the grid used by MASK
perturbIC.py -a AMPLITUDE FILE: Apply a perturbation to an initial conditions file
polar_anom.py FILE: Check the values at the poles
subset_ancillary.py -i INFILE -o OUTFILE -x X0,NX -y Y0,NY: Extract a region from an ancillary file
um_replace_field.py -i FILE -v STASH -n NETCDF -v VAR: Add a variable from a netcdf file to FILE
um_zero_field.py -v STASH FILE: Zero out a field in the file

um2netcdf.py -i INFILE -o OUTFILE -s STASH: Convert a single variable to netcdf format
um2netcdf_all.py -i INFILE -o OUTFILE: Convert all variables to netcdf format
um_copyfield.py -i AFILE -o BFILE -v STASH: Copy a field from AFILE into BFILE
um_fields_subset.py -i INFILE -o OUTFILE: Extract selected variables from INFILE
mergefiles.py AFILE BFILE OUTFILE: Combine the fields in AFILE and BFILE
um_timeseries.py -i INFILE -o OUTFILE: Convert file to netcdf
umv2netcdf.py -i INFILE -o OUTFILE: Convert file with variable grid to netcdf