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RRFS-MPAS: Various fixes and enhancements #1109

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This PR addresses issue #1108 for RRFS-MPAS applications. It provides the following changes:

  1. Temporary hard coding of imp_physics=8 for RRFS-MPAS, as required for brightness-temperature calculations in subroutine CALRAD_WCLOUD
  2. Updates to enable various microphysics-related output in RRFS-MPAS, namely:
    • cloud-ice mixing ratio (isobaric and native levels)
    • graupel mixing ratio (isobaric and native levels)
    • ice-friendly aerosol number concentration (native levels)
    • water-friendly aerosol number concentration (native levels)

These updates run successfully within GSL's real-time RRFS-MPAS applications on Jet.

jaymes-kenyon and others added 5 commits December 5, 2024 16:30
…mber concentration of ice-friendly aerosols)
…amely:

- cloud-ice mixing ratio (isobaric and native levels)
- graupel mixing ratio (isobaric and native levels)
- ice-friendly aerosol number concentration (native levels)
- water-friendly aerosol number concentration (native levels)
… brightness-temperature calculations in subroutine CALRAD_WCLOUD
@WenMeng-NOAA WenMeng-NOAA linked an issue Jan 3, 2025 that may be closed by this pull request
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@jaymes-kenyon My UPP standalone test for MPAS is at /scratch1/NCEPDEV/stmp2/Wen.Meng/mpas_2024082112-after on Hera, please let me know if you see issues.

@jaymes-kenyon
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Thanks, @WenMeng-NOAA! I think your results look as expected.

Within the WRFNAT12.tm00 file, I noticed three microphysics variables (NCONCD, PMTF, and PMTC) that had all zero values. This was because the RRFS netCDF file is somewhat old and is missing these arrays.

I will transfer a newer netCDF file onto Hera for future testing, but I think this test went as expected.

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RRFS-MPAS: Needed fixes and enhancements
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