Use Case for Global ICON-NWP (R02B06)#
- Data Download:
Click here or use
wget https://swift.dkrz.de/v1/dkrz_4d992e1b-f237-4258-a2bc-138ca6a1cf59/icon-model-use-cases/nwp-global-R02B06.tar.bz2
- Input files:
- Grid files
nwp-global-R02B06/icon_grid_0057_R02B05_R.nc: R02B05 grid (80 km effective mesh size), reduced radiation gridnwp-global-R02B06/icon_grid_0058_R02B06_G.nc: R02B06 grid (40 km effective mesh size), global, domain 1nwp-global-R02B06/icon_grid_0059_R02B07_N02.nc: R02B07 grid (20 km effective mesh size), nested domain over Europe, domain 2
- External parameter files
nwp-global-R02B06/extpar/icon_extpar_0058_R02B06_G_20220825_tiles.nc: External parameter file for domain 1nwp-global-R02B06/extpar/icon_extpar_0059_R02B07_N02_20220825_tiles.nc: External parameter file for domain 2
- Initial conditions
nwp-global-R02B06/data/igfff00000000_2024020700: Initial data for February 7, 2024, 00 UTC (for domain 1, domain 2 is initialized internally due to a time-shift in the start time)
Dictionaries
nwp-global-R02B06/mapfiles: Files to map the ICON internal variable names to I/O names used for ECCODES (GRIB2 shortnames)- Running the test:
Run script
nwp-global-R02B06/run_R02B06N07: run-script for ECMWF Atos computer in BolognaLog output
nwp-global-R02B06/run_R02B06.39880836.out: job-log file of a run on Atos with icon-model-2025.10- Recommended resources:
256 cores
- Estimated runtime (for resources indicated above):
about 5 minutes on 256 cores of the Atos Computer of ECMWF in Bologna
Description#
This use case runs a global ICON application with a resolution of about 40 km (R02B06). It includes a nest (R02B07) over Europe.
The run-script run_R02B06N07 defines the batch-parameters (for SLURM on Atos), sets I/O directories
and all the necessary namelist input for ICON. It can easily be modified to run on different
platforms.
run_R02B06N07_2025.04 is an older version of the run-script. Some namelist input has been adapted now.