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Nudging capability is natively added for global runs

Andreas Baer requested to merge baer/nudging-test into devel

Global nudging of the atmosphere is now supported natively as follows:

  • ERA5 input data is required (s.t. currently only LEVANTE is supported) (init script option --remap-era2icon)
  • Remapping of ERA5 data is required on a chunk level (init script option --e2i-remap-input chunk)
  • The nudging time hast to be provided (at maximum 86400 s = 1 day) in the experiment config file with EXPERIMENT.NUDGING_INTERVAL (in seconds).
  • Nudging is only available for full hours (because of the ERA5 input data).

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