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Updates for cycling w/o IAU #445

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KateFriedman-NOAA
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Tested feature/coupled_sprint on WCOSS-Dell atmos-only with IAU turned off. Successfully cycled 5.5 cycles at C192C96L127 with IAU off:

Mars: /gpfs/dell2/emc/modeling/save/Kate.Friedman/expdir/fcscycnoiau

Issue with IAU has been resolved in ufs-community/ufs-weather-model#782. Will test with IAU on when feature/coupled_sprint reaches the associated ufs-weather-model hash (ufs-community/ufs-weather-model@29fa453).

Thankfully only minimal updates were needed so far to cycle feature/coupled_sprint with recent forecast updates:

  1. had to add new WRITE_NSFLIP variable and set it to .true. (default is .false.)to get latitudes written out in GFSv16 order
  2. had to remove a LATB_CASE=192 check in ush/forecast_predet.sh to stop wrong berror file being used at runtime for that resolution

Ref: #427

- if-block that changed LATB_CASE to "190" when LATB_CASE is "192" is removed
- if-block was needed previously to handle missing fix file for this case
- new fix set includes symlinks to redirect fix files for certain resolutions
- LATB_CASE change created forecast output on the wrong grid dimensions; removing block resolves that

Refs: NOAA-EMC#427
- add WRITE_NSFLIP variable to parsing_model_configure_FV3.sh with default set to .false.
- add WRITE_NSFLIP variable to config.base and set to .true.
- running with WRITE_NSFLIP=.true. writes latitudes in current GFSv16 order (positive to negative)
- running with WRITE_NSFLIP=.false. writes latitudes negative to positive and causes issues with the GSI

Refs: NOAA-EMC#427
@KateFriedman-NOAA KateFriedman-NOAA merged commit 2425c65 into NOAA-EMC:feature/coupled_sprint Sep 23, 2021
@KateFriedman-NOAA KateFriedman-NOAA deleted the feature/coupled_sprint_cycling branch September 23, 2021 13:49
kayeekayee pushed a commit to kayeekayee/global-workflow that referenced this pull request May 30, 2024
…-EMC#445)

Clean up the exponential cloud overlapping method in RRTMG, which reflects the practice of the pre-2018 operational HWRF model.
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2 participants