GRIB2 as input

[Dadoof]

I have seen a number of posts about how things don't quite work, at times, if GRIB2 data is used.

On the use of 'opendata', I get this error:

ai-models --lead-time 36 --date 20240801 --time 0000 --input opendata --assets fcn fourcastnetv2-small

Traceback (most recent call last):
  File "/opt/conda/bin/ai-models", line 8, in <module>
    sys.exit(main())
  File "/opt/conda/lib/python3.10/site-packages/ai_models/__main__.py", line 358, in main
    _main(sys.argv[1:])
  File "/opt/conda/lib/python3.10/site-packages/ai_models/__main__.py", line 306, in _main
    run(vars(args), unknownargs)
  File "/opt/conda/lib/python3.10/site-packages/ai_models/__main__.py", line 331, in run
    model.run()
  File "/opt/conda/lib/python3.10/site-packages/ai_models_fourcastnetv2/model.py", line 197, in run
    all_fields_numpy = self.normalise(all_fields_numpy)
  File "/opt/conda/lib/python3.10/site-packages/ai_models_fourcastnetv2/model.py", line 180, in normalise
    new_data = (data - self.means) / self.stds
ValueError: operands could not be broadcast together with shapes (53,721,1440) (1,73,1,1)

Same thing happens if I download the grib2 file, and then attempt to use the --file option.

There is something about the grib2 encoding that ai-models, as I have installed it, needs help with. I have seen this same "ValueError" bit listed in other issues on this repository, but I cannot see how they were resolved.

[xionghan7427]

You don't need to provide the date and time when using grib file as input.

[see-ann]

Any updates on how this was resolved?

[mchantry]

Currently not all the required data for this model is part of the open-data offering. We hope to fix this in the near future, but I cannot provide a timeline at present.