Interfaces & Tools#

Grid & Extpar WebGUI#

A publicly available tool for the generation of grid files and external parameter datasets is currently under development. For the time being, we have to refer to the list of predefined grids and external parameter datasets and the Recommended Configurations.

Coupling (YAC)#

YAC (Yet Another Coupler) is a flexibe coupling library which comes with ICON. Its interface is compatible to the well known OASIS coupler and it can be used as a full replacement of it.
YAC supports many different horizontal interpolations and a unique interpolation stack to control alternatives in case direct interpolation is not feasable. It is not only used for coupling atmosphere and ocean components of ICON, but also for a highly flexible output method.

yac yac

YAC Documentation

You can find further information in the YAC Documentation.

Data Analyslis & Remapping (CDO)#

CDO is a well know data anlysis tool developed by Max-Planck-Institute for Meteorology. CDO supports the ICON native horizontal grid so that ICON model output can be easily analysed.

Examples:

  • Horizontal interlations can be done with a wide range of methods

  • Vertical interpolation from ICON (atm) vertical sigma hight coordinate with the ap2pl operator:

    • (optional) add CF-conform name for pressure with

    ncatted -O -a standard_name,pres,o,c,"air_pressure" <input> <output>     # using NCO

    or

    cdo -setattribute,pres@standard_name='air_pressure' <input> <output>

    • call the ap2pl operator in this case for a remapping to the 500 hPa and 825 hPa levels

    cdo ap2pl,50000,82500 <input> <output>
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