[unity] DWD ICON: Model level not honored when computing filenames

[amotl]

Hi there,

within model_variables_levels_mapping.yml, temperature is designated as a model-level field. However, the model level is missing from the filename, so GribMagic croaks like

WARNING: Access failed: 404 Client Error: Not Found for url: [...]

The computed URL looks like [1] but it should be [2] instead.

With kind regards,
Andreas.

[1] https://opendata.dwd.de/weather/nwp/icon-eu/grib/00/t/icon-eu_europe_regular-lat-lon_model-level_2020121900_000_T.grib2.bz2
[2] https://opendata.dwd.de/weather/nwp/icon-eu/grib/00/t/icon-eu_europe_regular-lat-lon_model-level_2020121900_000_10_T.grib2.bz2

[mhaberler]

for levels, DWD uses two flavors: 'pressure-level' (like 975, 950, 925, 900, 800..200 etc hPa - 10 steps in total) and 'model-level' variant, see for example here which have 65-90 levels (I do not understand the difference between 'full height level' and 'half height level' in these models yet)

the pressure-level layers are kind of standard in the forecasting trade but has much less vertical resolution than model level and this is the very reason why I started looking at DWD data in raw form

here's is the repo which brought me upon the trail of model-level: https://github.com/fvalka/icon-skewt-plot

look at the vertical wind barbs on the right hand side - here is for comparison a more traditional pressure-level SkewT diagram