NCAR / NCAR/DART

Feature request: JEDI forward operators for use in DART

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#760 1 comment 0 reactions 1 assignee View on GitHub

@hkershaw-brown is already working on this.

Since Jan 31, 2025.

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Description

Use case

This has already been accomplished by people (most notably Craig Schwartz) 🎉

Is your feature request related to a problem?

Related to #724, precomputed (external forward operators) are used with DART, but not documented or available though NCAR/DART repo.
Note: ROMS observation converter does provide forward operators. We have users using RTTOV external forward operators.

Describe your preferred solution
  • Implantation though the current external forward operator mechanism (obs_sequence files). This is what is out there and what people have been using.
  • JEDI obs to obs_seqence (no fwd op) so DART can ingest JEDI IODA observations.
Describe any alternatives you have considered

However, in the not too distant future (maybe a subsequent issue to this JEDI v1 issue, or maybe concurrent since this is not JEDI specific)

  • Memory scalable (and IO parallel) version of external forward operators.

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