Updates from ESCOMP/CAM

[gold2718]

Issue Type

Other (please describe below)

Issue Description

Bring in a number of small fixes, forcing files, and tuning adjustments from NCAR:

CESM/CAM developments since 13. april 2025

• Replace magic numbers 287.15 with rair in physconst
  • Roundoff differences in PUMAS and cloud diagnostics
• Reorder tautms/taublj add terms for future vertical diffusion refactoring
  • Order of operation differences
• Bug fixes in the cloud chemistry module
  • Lower bound on H2O2, H2SO4 and MSA in sox_cldaero_update (add to NorESM)
• Changed various CAM7 namelist settings to match CESM3 experiment #140
  • micro_mg_dcs: 500 ⇒ 600 (not bringing in this change in this PR)
  • New 1 degree SE topo file
  • clubb_C8: 4.5 ⇒ 4.6 (not bringing in this change in this PR as NorESM already uses a higher value)
  • cldfrc_dp1: 0.10 ⇒ 0.05 (not bringing in this change in this PR)
  • New solar_irrad_data_file (also new solar files for WACCM) (add to NorESM)
  • RRTMGP updates (note: Oslo Aero is still not using this)
• Add emission files for CAM7 runs
• Fixes for input interpolation routines (aircraft runs only)

Will this change answers?

Yes

Will you be implementing this yourself?

Yes

[oyvindseland]

Looking at the output at https://ns2345k.web.sigma2.no/datalake/diagnostics/ADF/goldy/n1850.ne16_tn14.noresm3_0_beta03_rafsipmasstonum.20251023_1_10_vs_n1850.ne16_tn14.noresm3_0_beta03_rafsipmasstonum.20250930_1_90/website/index.html

The new emission files does not have seem to have much impact on sulfur but given that it a PI simulation I guess that was to be expected. The cloud water and cloud ice however both increase by 20 %. The column burden of sea-salt increase by 10 %, presumably as a response to the increase in cloud water (more cloud water --> longer lifetime in clouds)

Caused by reordering ? Solar?

[oyvindseland]

Another test from Steve comparing the code changes is
https://ns2345k.web.sigma2.no/datalake/diagnostics/ADF/goldy/n1850.ne16_tn14.noresm3_0_beta03_c0lndocemodc8.20251014_1_10_vs_n1850.ne16_tn14.noresm3_0_beta03_c0lndocemodc8.20251014_1_10/website/html_img/mean_diag_LatLon.html

The differences in these simulation are so small that I first wondered if they were the same simulation. If this the only impact of the code change then it is certainly not a problem to include the update in any tag update.

[gold2718]

Fixed by #242