Tenth reconciliation PR from production/RRFS.v1 #926
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grantfirl
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Feb 7, 2025
14 tasks
jkbk2004
approved these changes
Feb 17, 2025
BrianCurtis-NOAA
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Feb 19, 2025
This was referenced Feb 20, 2025
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Description
This is @JiliDong-NOAA 's work and is identical to #869
This PR follows Jongil's suggestion and aims to reduce the large convective reflectivity caused by saSAS adjustment in the first timestep during a warm start. The issue is likely related to the inconsistency when DA updates the moisture at t but not the moisture from the previous timestep (t-36s). The moisture from the previous timestep is needed for initializing sigmab (updraft area fraction) when calculating qadv (q advection or tendency term).
The PR forces qadv to zero in the first timestep when a namelist parameter sigmab_coldstart is set to .true. It also reduces the lower limit of sigmab from 0.01 to 0.0 in the first timestep.
Two bug fixes for LSM soil output with inline post are added in this PR:
2.1 #877
2.2 @ericaligo-NOAA identified and fixed another bug with inline post when "lsoil" is different from "lsoil_lsm" which can happen when cold starting from Noah LSM input but running forecast with RUC LSM. In the above example, lsoil=4 and lsoil_lsm=9. There is no soil variables from inline post. The fix will set the correct "nsoil" based on lsoil_lsm and recover the LSM soil output.
Issue(s) addressed
None
Testing
UFS RTs on Hera
Changes baselines for tests using saSAS deep convection
Dependencies
ufs-community/ccpp-physics#252