NSSL MP initialization issue

[JiliDong-NOAA]

Description

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Also give a description of how to fix the bug.

When warm starting with NSSL microphysics from restart IC using Thompson microphysics, NSSL microphysics assumes number of concentration of all hydrometers are available and enter the warm start mode for microphysics. This led to an initial surge of reflectivity in RRFS ensemble members using NSSL microphysics.

This issue can be fixed by adding a check for missing number of concentrations for all hydrometers.

To Reproduce:

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1. do this
2. then that
3. then, oops, look at the bug

Warm start with NSSL microphysics scheme with restart IC from Thompson microphysics. Check the reflectivity at F00 (the first timestep)

Additional context

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Directly reference any issues or PRs in this or other repositories that this is related to, and describe how they are related. Example:

• needs to be fixed also in noaa-emc/nems/issues/<issue_number>
• needed for noaa-emc/fv3atm/pull/<pr_number>

Output

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output logs
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see the high reflectivity in members with NSSL microphysics, particularly the red circles, compared with other members using Thompson microphysics
nssl_mp_github_issue.pptx

Testing:

1. Have you tested the code changes? On what platforms?
   Yes. On Hera
2. Have you run regression test in ufs-weather-model or ufs-s2s-model with code changes?
   Yes.

• Will the baseline results change? No
• If the baseline results change, is it expected? Please give brief explanation.

Dependent PRs:

Directly reference any issues or PRs in this or other repositories that this is related to, and describe how they are related. Example:

• required to support noaa-emc/GFDL_atmos_cubed_sphere/issues/<issue_number>
• ncar/ccpp-physics/pull/<pr_number>
• associated ufs-weather-model/pull/<pr_number>

#764