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Katana

Downscale HRRR wind data using the Wind Ninja model.

Conda environment

Use the supplied katana.yaml to create a conda environment that has the required software packages installed.

Katana running nodes

Wind Ninja

  • Can use 24 cores at a time
  • Needs roughly 0.5 GB per core of memory
  • One month with 24 cores takes about 20 minutes run time

Quick data quality checks

  • Each day should produce roughly the same output data in size
  • If one day falls out of that, execute the individual day again using the steps described for debugging below. Sometimes this requires to re-run the simulation more than once. Can't point to a specific reason at this point on why some days show this, but re-running has proven to be successful.

Helpful commands (dates are examples)

  • Get size for a day: du -hs 20180901
  • Get size for a month: du -hs 201809*
  • Get size for multiple months: du -hs 2018{08,09}*

Possible error sources

  • Bad HRRR grib files with no or corrupted data

Debugging issues

Run single day

Execute wind_ninja_singularity.sh and use the katana.ini file that gets created by katana. This file has the config used by Wind Ninja for a single day. It is located on the root level of the output folder given to katana.