NCO

NCO manipulates data stored in netCDF-accessible formats, including HDF4 and HDF5. It also exploits the geophysical expressivity of many CF (Climate & Forecast) metadata conventions, the flexible description of physical dimensions translated by UDUnits, the network transparency of OPeNDAP, the storage features (e.g., compression, chunking, groups) of HDF (the Hierarchical Data Format), and many powerful mathematical and statistical algorithms of GSL (the GNU Scientific Library). See the NCO webpages for detailed documentation.

Installations on NSC systems

Tetralith and Sigma

NCO is available via the module system on Tetralith and Sigma. For more information about available versions, please see the Tetralith and Sigma Software list.

How to run

Load the NCO module corresponding to the version you want to use, e.g

module load NCO/4.6.3-nsc1

This will add the NCO commands to your search path. NCO operators:

ncap
ncap2
ncatted
ncbo
ncdiff
ncea
ncecat
ncflint
ncks
ncpdq
ncra
ncrcat
ncrename
ncwa

Please try not run NCO on the login node! To run NCO interactively, allocate a compute node for interactive use and then run NCO operations. E.g average five files (85.nc, 86.nc, 87.nc, 88.nc, 89.nc) over the record dimension:

interactive -N1 --exclusive -t 00:30:00
module load NCO/4.6.3-nsc1
ncra 85.nc 86.nc 87.nc 88.nc 89.nc 8589.nc