[ekluzek]

Description of changes

Update the dataset to use for 1850 for cesm3 to a preliminary one.

Specific notes

Contributors other than yourself, if any:

CDEPS Issues Fixed (include github issue #):
Fixes #389

Are there dependencies on other component PRs (if so list):
No
But, will change answers for components that use DATM and need prescribed aerosols (MOM and CICE I beleive)

Are changes expected to change answers (bfb, different to roundoff, more substantial):
Different for anything with DATM_PRESAERO==clim_1850_cesm3
new CESM3 climate

Any User Interface Changes (namelist or namelist defaults changes):
No

Testing performed (e.g. aux_cdeps, CESM prealpha, etc):
So far ran this test:
SMS_Lm1.ne30pg3_t233.I1850Clm60BgcCropCrujraG.derecho_intel.clm-clm60cam7LndTuningMode
will run aux_clm and aux_cdeps

Hashes used for testing:
12efcbc
So far: ctsm5.4.063-2-g66f62810f
with: ccs_config_cesm1.0.92
cime6.5.20
cmeps1.1.71

[ekluzek]

@billsacks @slevis-lmwg and @Katetc this is ready to review now. I'm sending testing for it, and will report back on what I find there. Please review and let me know if there's anything to address.

[billsacks]

I'm approving but also adding @mvertens as a reviewer since it looks like this could potentially impact NorESM?

[mvertens]

Can we please add a model=cesm attribute for this - since this is now available in the latest version of noresm.

[slevis-lmwg]

No concerns on my part.

[ekluzek]

Can we please add a model=cesm attribute for this - since this is now available in the latest version of noresm.

Yep, I'll add the cime_model business for all of the changes, so that noresm has the previous defaults. NorESM likely might want CMIP7 CO2 for example, but it's best if you take on getting the noresm defaults the way you want.

[ekluzek]

Things I'll do:

• Add cime_model as requested (have previous defaults preserved for noresm)
• Update aerosol dataset to one from the "402" spinup (this won't change much as both have prescribed aerosols from the same case)
• Rerun testing