Fixed stratosphere warm bias and code optimization for MERRA2

[AnningCheng-NOAA]

Description

(Instructions: this, and all subsequent sections of text should be removed and filled in as appropriate.)
Provide a detailed description of what this PR does.
What bug does it fix, or what feature does it add?
fixed stratosphere warm bias for merra2_thompson test
Is a change of answers expected from this PR?
yes

Issue(s) addressed

Link the issues to be closed with this PR, whether in this repository, or in another repository.
(Remember, issues should always be created before starting work on a PR branch!)

• fixes fixed the warm bias in stratosphere from MERRA2 coupled microphysics  ufs-community/ufs-weather-model#1786

Testing

How were these changes tested?
regression test in hera
What compilers / HPCs was it tested with?
intel in hera
Are the changes covered by regression tests? (If not, why? Do new tests need to be added?)
yes
Have the ufs-weather-model regression test been run? On what platform?

• Will the code updates change regression test baseline? If yes, why? Please show the baseline directory below.
  yes
• Please commit the regression test log files in your ufs-weather-model branch
  committed in PR: Fixed the warm bias in stratosphere from MERRA2 coupled microphysics ufs-community/ufs-weather-model#1788

Dependencies

If testing this branch requires non-default branches in other repositories, list them.
Those branches should have matching names (ideally)

Do PRs in upstream repositories need to be merged first?
If so add the "waiting for other repos" label and list the upstream PRs

• waiting on noaa-emc/nems/pull/<pr_number>
• waiting on noaa-emc/fv3atm/pull/<pr_number>

[grantfirl]

@AnningCheng-NOAA You will need to "point" this fv3atm branch to your ccpp-physics PR branch:

• On the machine where you developed this code, make sure that your ccpp-physics branch associated with this PR is checked out.

• cd up to FV3

• git add ccpp/physics -- this points the FV3 submodule to the correct commit of your ccpp-physics PR branch

• edit .gitmodules to point to your PR branch of ccpp-physics
  instead of [submodule "ccpp/physics"]
path = ccpp/physics
url = https://github.com/ufs-community/ccpp-physics
branch = ufs/dev
  you should have
  [submodule "ccpp/physics"]
path = ccpp/physics
url = https://github.com/AnningCheng-NOAA/ccpp-physics
branch = maie

• After editing .gitmodules, do git add .gitmodules

• git commit

• git push