Extract ICON data

ICON digestion in Meso-NH is only available since MNH-V6-0-0.

Data source

The ICON model is run and support by several institues such as the german national weather services DWD among other (https://www.icon-model.org/about-us/icon-partners/icon-partners) It is run in a global configuration; a limited-area configuration over europe ICON-EU at 7km resolution updated every 3 hours for the next 120 hours forecast.

The official website is https://www.icon-model.org/

For Meso-NH, only the ICON-EU and ICON-Global digestion was tested.

Historical mode

No data are publicly available

Operational mode

A new cycle is run every 3 hours

ICON-EU: data are available here http://opendata.dwd.de/weather/nwp/icon-eu/grib/

ICON-Global: data are available here http://opendata.dwd.de/weather/nwp/icon/grib/

Using ICON-EU

Fill the HATMFILE field in PRE_REAL1.nam with the file name iconeu.RRz.HH.grib2 extracted with a script fetch_icon.sh found in the examples/integration_cases/hpc/GRIB/ICONEU test case.

You must also specify _nam_real_conf NVERLEVEL_GRIB=74

Using ICON-Global

In examples/integration_cases/hpc/GRIB/ICONGLOBAL, there are scripts to fetch_icon.sh ICON-global and icosahedral_to_latlon.sh to convert the icosahedral ICON grid into a regular lat/lon grid.

Fill the HATMFILE field in PRE_REAL1.nam with the file name icon-global-latlon.grb extracted with a script found in the examples/integration_cases/hpc/GRIB/ICONGLOBAL test case.

You must also specify _nam_real_conf NVERLEVEL_GRIB=120