Complete CCPPization of BAM/MAM aerosol optics; BAM microp_aero (nucleate_ice; ndrop_bam; inline logic in microp_aero) by jimmielin · Pull Request #398 · ESCOMP/atmospheric_physics

jimmielin · 2026-05-18T17:06:29Z

Tag name:
Originator(s): @jimmielin

Description:

Adds aerosol optics schemes for all aerosol models for CAM-SIMA.
Closes CCPPize microp_aero.F90 (BAM path), nucleate_ice_cam.F90 (BAM path), ndrop_bam.F90 #381 - Adds microp_aero schemes for BAM in CAM-SIMA; shared code with CAM.
Closes CCPPize sslt_rebin #373 - rebin seasalt
Partially Port/CCPPize bulk aerosol model (BAM/bulk_aero) to atmos_phys #360

Companion CAM-SIMA PR: ESCOMP/CAM-SIMA#504

List all namelist files that were added or changed:

A  schemes/chemistry/aerosol_optics_namelist.xml
A  schemes/microp_aero/ccpp/nucleate_ice_ccpp_namelist.xml
A  schemes/microp_aero/scale_subgrid_vertical_velocity_namelist.xml
   - new scheme namelists

A  schemes/microp_aero/ccpp/hetfrz_classnuc_stub_namelist.xml
   - stub for use_hetfrz_classnuc flag (stub disables classnuc het freezing).

List all files eliminated and why: N/A

List all files added and what they do:

A  schemes/chemistry/aerosol_optics.F90
A  schemes/chemistry/aerosol_optics.meta
A  schemes/chemistry/aerosol_optics_namelist.xml
   - Aerosol optics scheme. Computes per-band SW/LW aerosol optical properties
     (extinction, SSA, asymmetry) from aerosol model instances via the abstract
     aerosol interface. Reads water refractive index data in init.

A  schemes/sima_diagnostics/aerosol_optics_diagnostics.F90
A  schemes/sima_diagnostics/aerosol_optics_diagnostics.meta
   - Aerosol optics diagnostics: per-species AOD, burden, SSA, visible AOD, etc.

A  schemes/chemistry/aerosol_optics_zero_stub.F90
A  schemes/chemistry/aerosol_optics_zero_stub.meta
   - Zero stub providing zeroed-out aerosol optical properties for RRTMGP
     snapshot testing without the full aerosol optics scheme.

A  schemes/chemistry/rebin_seasalt.F90
A  schemes/chemistry/rebin_seasalt.meta
   - Rebins 4-bin BAM prescribed seasalt (sslt01/02/03/04) to 2-bin
     (sslta/ssltc) using constituent mass fractions.

A  schemes/microp_aero/ndrop_bam.F90
   - Portable layer for bulk aerosol droplet activation (Abdul-Razzak and
     Ghan 2000). Computes droplet number tendency and CCN concentrations.
   - This is copied from CAM then slightly cleaned up

A  schemes/microp_aero/nucleate_ice.F90
   - Portable layer for ice nucleation (Liu and Penner 2005, Liu et al. 2007).
     Computes ice crystal number from homogeneous and heterogeneous nucleation.
   - This is copied from CAM

A  schemes/microp_aero/compute_subgrid_vertical_velocity.F90
A  schemes/microp_aero/compute_subgrid_vertical_velocity.meta
   - Computes subgrid vertical velocity (wsub, wsubi) from TKE or CLUBB WP2.
   - Original logic from CAM inlined in microp_aero

A  schemes/microp_aero/scale_subgrid_vertical_velocity.F90
A  schemes/microp_aero/scale_subgrid_vertical_velocity.meta
A  schemes/microp_aero/scale_subgrid_vertical_velocity_namelist.xml
   - Applies wsub_scale scaling factor to subgrid vertical velocity.
   - Original logic from CAM inlined in microp_aero

A  schemes/microp_aero/dust_default_radii.F90
A  schemes/microp_aero/dust_default_radii.meta
   - Sets default dust effective radii for radiation (dust1-4).
   - Original logic from CAM inlined in microp_aero

A  schemes/microp_aero/ccpp/ndrop_bam_ccpp.F90
A  schemes/microp_aero/ccpp/ndrop_bam_ccpp.meta
   - CCPP wrapper for ndrop_bam

A  schemes/microp_aero/ccpp/nucleate_ice_ccpp.F90
A  schemes/microp_aero/ccpp/nucleate_ice_ccpp.meta
A  schemes/microp_aero/ccpp/nucleate_ice_ccpp_namelist.xml
   - CCPP wrapper for nucleate_ice, equivalent to nucleate_ice_cam in CAM.

A  schemes/microp_aero/ccpp/hetfrz_classnuc_stub.F90
A  schemes/microp_aero/ccpp/hetfrz_classnuc_stub.meta
A  schemes/microp_aero/ccpp/hetfrz_classnuc_stub_namelist.xml
   - Stub for heterogeneous freezing (classnuc). Provides zero tendencies
     when use_hetfrz_classnuc is false. For BAM.

A  test/test_schemes/initialize_pbuf_aerosols.F90
A  test/test_schemes/initialize_pbuf_aerosols.meta
   - Test scheme for discovering aerosol number concentration species from
     pbuf-style "N:" fields via the abstract aerosol interface.

A  test/test_suites/suite_microp_aero_bam.xml
   - Test SDF for the microp_aero BAM suite.

A       schemes/sima_diagnostics/aerosol_optics_diagnostics.F90
A       schemes/sima_diagnostics/aerosol_optics_diagnostics.meta
A       schemes/sima_diagnostics/ndrop_bam_diagnostics.F90
A       schemes/sima_diagnostics/ndrop_bam_diagnostics.meta
A       schemes/sima_diagnostics/nucleate_ice_diagnostics.F90
A       schemes/sima_diagnostics/nucleate_ice_diagnostics.meta
A       schemes/sima_diagnostics/scale_subgrid_vertical_velocity_diagnostics.F90
A       schemes/sima_diagnostics/scale_subgrid_vertical_velocity_diagnostics.meta
   - diagnostic schemes

List all existing files that have been modified, and describe the changes:

M  schemes/rrtmgp/rrtmgp_sw_aerosols.F90
M  schemes/rrtmgp/rrtmgp_sw_aerosols.meta
   - Replace stub with implementation. Accepts aerosol tau/tau_w/tau_w_g from
     aerosol_optics, reorders from RRTMG to RRTMGP SW band ordering, maps CAM
     vertical levels to RRTMGP levels, subsets to daytime columns. Computes SSA
     and asymmetry parameter from the product fields.

M  schemes/rrtmgp/rrtmgp_lw_aerosols.F90
M  schemes/rrtmgp/rrtmgp_lw_aerosols.meta
   - Replace stub with implementation. Accepts aer_lw_abs from aerosol_optics,
     maps CAM vertical levels to RRTMGP levels. No band reorder needed for LW.

M  suites/suite_cam4.xml
   - Add prescribed aerosol/ozone schemes, rebin_seasalt, aerosol_optics, and
     aerosol_optics_diagnostics to CAM4 SDF
   - Reorder rrtmgp_pre before aerosol_optics so night column info is available for diagnostics.

M  test/test_suites/suite_rrtmgp.xml
   - Add aerosol_optics_zero_stub to RRTMGP test suite for snapshot testing to remain bit-for-bit.

List all automated tests that failed, as well as an explanation for why they weren't fixed:

Is this an answer-changing PR? If so, is it a new physics package, algorithm change, tuning change, etc?
New physics package
CAM regression tests for shared code
SIMA snapshot tests for microp_aero
Eyeballed the results from aerosol optics and looked reasonable.

If yes to the above question, describe how this code was validated with the new/modified features:

…sol interface Draft: wire up aerosol optics to rrtmgp Move nswbands, nlwbands to host side namelist wire up aerosol_optics in cam4 suite to cherry-pick: remove constituent diag in prescribe_volcanic_aerosol fix dim diagnostic test; try to move radiative_aerosol_definitions to metadata instead of host-model dep Fix idxnite not in rrtmgp_pre before running aerosol_optics; add ODV diags for bulk aerosol

…/ssltc

…s diagnostics

…scheme.

…CPP scheme.

…r lbound of assumed-shape arrays

…ting

Assisted-by: claude-opus:4.6

… needed for CAM

…pp.meta start

…ol from pbuf_ N fields

… good

jimmielin · 2026-05-20T18:47:17Z

+          ! Reset per-species accumulators for this bin/level
+          scatdust_d(:ncol) = 0._kind_phys; absdust_d(:ncol) = 0._kind_phys; hygrodust_d(:ncol) = 0._kind_phys
+          scatbc_d(:ncol) = 0._kind_phys; absbc_d(:ncol) = 0._kind_phys; hygrobc_d(:ncol) = 0._kind_phys
+          scatsulf_d(:ncol) = 0._kind_phys; abssulf_d(:ncol) = 0._kind_phys; hygrosulf_d(:ncol) = 0._kind_phys
+          scatpom_d(:ncol) = 0._kind_phys; abspom_d(:ncol) = 0._kind_phys; hygropom_d(:ncol) = 0._kind_phys
+          scatsoa_d(:ncol) = 0._kind_phys; abssoa_d(:ncol) = 0._kind_phys; hygrosoa_d(:ncol) = 0._kind_phys
+          scatsslt_d(:ncol) = 0._kind_phys; abssslt_d(:ncol) = 0._kind_phys; hygrosslt_d(:ncol) = 0._kind_phys


A note that these variables of the code is intentionally hardcoded to match CAM aerosol_optics_cam.F90 and will be refactored in the future in CAM to be namelist-driven.

jimmielin · 2026-07-21T17:11:02Z

+!
+! Safe to use with use_hetfrz_classnuc=.true. for snapshot-testing flows where
+! the flag must propagate downstream; a warning is printed at init time.
+module hetfrz_classnuc_stub


This stub serves both microp_aero and PUMAS, so whichever goes in first.

jimmielin · 2026-07-21T17:12:15Z

+    call ndrop_bam_calc( &
+      aero_state = aero_state_bam, &
+      aero_props = aero_props_bam, &


This contraption brought to you because the framework is currently unable to handle abstract classes like this being passed into the schemes; also, we need to resolve the BAM aerosol state/props from all the potentially active states (more than one can be active at a time.)

This pattern of having a CCPP marshal will be predominant in the BAM/MAM work in the future.

jimmielin · 2026-07-21T17:13:30Z

+   !! \htmlinclude ndrop_bam_diagnostics_init.html
+   subroutine ndrop_bam_diagnostics_init(errmsg, errflg)
+      use cam_history, only: history_add_field
+      use ndrop_bam,   only: aername


There is no elegant way to get the bulk aerosol names but sourcing it from the portable code is the best I could think of. The other way would be to scan rad_aer_climate from the host radiative_aerosol_definitions which seems more hassle. This is consistent with how CAM does the addflds.

jimmielin · 2026-07-21T17:13:53Z

  intent = in
 [ tke ]
-  standard_name = specific_turbulent_kinetic_energy_at_interfaces
+  standard_name = tke_at_interfaces


Name updated to match UW PBL. Missed this in the last PR.

jimmielin · 2026-07-21T17:14:51Z

+         index(cnst_name, 'NUMLIQ') > 0 .or. &  ! micro_pumas_cam if modal/trop_strat carma
+         index(cnst_name, 'mass_number_concentration_of_cloud_liquid_wrt_moist_air_and_condensed_water') > 0) then


These are one and the same, but before it was NUMLIQ if it was not in the registry; if it is in the registry, it becomes the actual standard name.

I would not spend too much pondering the utility of this subroutine; it will be eliminated after dropmixnuc is CCPPized, and this is supposed to be a custom constituent property, not a logical array.

jimmielin · 2026-07-21T17:15:37Z

+! Unified CCPP scheme for ice nucleation via the nucleati kernel.
+! Uses the abstract interface to support BAM, MAM, and CARMA.
+!
+! This scheme replaces nucleate_ice_cam_calc for CAM-SIMA.
+module nucleate_ice_ccpp


Same pattern as ndrop_bam_ccpp.

This module supports all aerosol models (BAM/MAM/CARMA)

…bed schemes; diagnostic names in sima_state_diagnostics) into bulk_aero_3_rebased_on_main

…e interface. The diagnostic-list water uptake in modal_aerosol_state (CAM-SIMA) takes t, pmid, h2ommr, cldn and top_lev; thread them through the scheme and the two per-species diagnostic calls.

In CAM these are pbuf fields (qqcw) and never reach the diffusion constituent loop; CAM-SIMA registers them as constituents, so they must be excluded by name like the interstitial modal species.

Mirrors physics_update's qneg3 label in CAM ('nucleatei').

…he MAM-side prescribed_stratospheric_aerosol.

CAM computes relative humidity for the optics table lookup inline in aerosol_optics_cam; in CAM-SIMA cam4/cam5 it comes from compute_cloud_fraction, which cam7 does not run, so capgen found no provider for relative_humidity. The water vapor constituent is resolved by standard name instead of CAM's fixed constituent index 1.

The cam7 cap declares scheme locals by local name, so nucleate_ice's ni (cloud ice number concentration) collides with the gravity wave drag schemes' ni (interface Brunt-Vaisala frequency) and the cap fails to compile. Local-name collisions across schemes with different standard names are a capgen issue to raise upstream; renaming ours unblocks cam7.

nusbaume

Thanks @jimmielin! It will be great to get our first (!) aerosol model plugged into CAM-SIMA. I have some comments and change requests, but i don't think any of them will be too hard to implement. Of course if something I requested would in-fact cause a problem just let me know. Thanks again!

nusbaume · 2026-08-06T15:58:03Z

+         index(cnst_name, '_c3') > 0 .or. &     ! MAM cloud-borne species.
+         index(cnst_name, '_c4') > 0 .or. &     ! MAM cloud-borne species.
+         index(cnst_name, 'NUMLIQ') > 0 .or. &  ! micro_pumas_cam if modal/trop_strat carma
+         index(cnst_name, 'mass_number_concentration_of_cloud_liquid_wrt_moist_air_and_condensed_water') > 0) then


Just leaving a note that you might need to update the standard name here?

Yes, will do when PUMAS is merged! Please feel free to leave unresolved

Updated in bf22c5e to synchronize all standard names with PUMAS round 3

nusbaume · 2026-08-06T16:58:28Z


 <suite name="cam7" version="1.0">
+  <!--
+      CAM7 PHYSICS SUITE (-chem none variant)


I wonder if we should actually change the name of the SDF itself to something like suite_cam7_bam.xml (or whatever name you think makes sense), to make it clear that this particular SDF will only for prescribed BAM aerosols in CAM7.

Assisted-by: claude-opus:5

…constituent

…ebased_on_main # Conflicts: # schemes/microp_aero/ccpp/hetfrz_classnuc_stub.F90 # schemes/microp_aero/ccpp/hetfrz_classnuc_stub.meta # schemes/microp_aero/ccpp/hetfrz_classnuc_stub_namelist.xml

Renames applied from the round 3 rename ledgers (waves 2026-07 + 2026-08): - npccn -> tendency_of_mass_number_concentration_of_activated_cloud_condensation_nuclei - naai -> tendency_of_mass_number_concentration_of_activated_ice_nuclei - naai_hom -> tendency_of_mass_number_concentration_of_activated_ice_nuclei_due_to_homogeneous_freezing - numliq -> mass_number_concentration_of_cloud_liquid_water_droplets_in_moist_air_and_condensed_water (also inside the diffusion_solver ndrop-activation constituent-name check) - numice -> mass_number_concentration_of_cloud_ice_water_crystals_in_moist_air_and_condensed_water - use_hetfrz_classnuc flag -> do_heterogeneous_ice_nucleation. Note this name is wrong (canonical is do_heterogeneous_freezing_by_classical_nucleation_theory) but it is baked into the ESCOMP/PUMAS v1.40 submodule, so we follow it for now.

Move the PUMAS block into the macro/micro substepping section directly after the microp_aero schemes (clubb_tend -> microp_aero_run -> microp_driver_tend in cam7 physpkg.F90); it was placed after the vertical diffusion slot upstream. Drop schemes already present in this suite (to_be_ccppized_temporary, cloud_fraction_options, compute_cloud_fraction_two_moment, hetfrz_classnuc_stub) and initialize_constituents, which is test-harness scaffolding: the hydrometeor constituents are declared advected in micro_pumas_ccpp_dimensions_pre.meta and initialized by the host. Keep clubb_stub (sole do_clubb_sgs provider) in the CLUBB macrophysics slot.

Add the microphysics-aerosol coupling chain to suite_cam5 per CAM5 physpkg.F90, where microp_aero_run runs immediately before the microphysics driver: tropopause_find (chemical tropopause), subgrid vertical velocity using the TKE variant (tke_at_interfaces from the UW PBL bretherton_park_diff, previous timestep), scale_subgrid_vertical_velocity, dust_default_radii, nucleate_ice_ccpp, and ndrop_bam_ccpp with their diagnostics. Add prescribed_aerosols and rebin_seasalt at the top of the group to register the bulk aerosol constituents ndrop_bam activates. Without this the merged-in PUMAS block would run with never-computed activation inputs (npccn/naai resolve to registry allocatables).

nusbaume

Thanks for resolving my concerns @jimmielin! I left a few comments un-resolved as requested, and added one last (hopefully trivial) request, but otherwise everything looks great to me. Thanks again!

nusbaume · 2026-08-14T15:53:08Z

+      character(len=*), parameter :: ccn_long_name(psat) = (/ character(len=59) :: &
+           'cloud_condensation_nuclei_number_concentration_at_S_0.02pct', &
+           'cloud_condensation_nuclei_number_concentration_at_S_0.05pct', &
+           'cloud_condensation_nuclei_number_concentration_at_S_0.1pct',  &
+           'cloud_condensation_nuclei_number_concentration_at_S_0.2pct',  &
+           'cloud_condensation_nuclei_number_concentration_at_S_0.5pct',  &
+           'cloud_condensation_nuclei_number_concentration_at_S_1.0pct'   /)


Use square brackets here instead of (/ and /)?

peverwhee

a couple of nitpicks and a couple of questions!

I only reviewed aerosol_optics.F90, .meta, and .xml

peverwhee · 2026-08-14T20:39:26Z

+      if (aodvis(icol) > aodvis_min) then
+        ssavis(icol) = sum(aer_tau_w(icol, :, idx_sw_diag)) / aodvis(icol)
+      else
+        ssavis(icol) = ssavis_default


nitpick, but perhaps it'd be better to set ssavis to ssavis_default before entering this loop?

Yep, that's much cleaner. done! now initialized to ssavis_default at initialization of the array itself

peverwhee · 2026-08-14T20:46:59Z

+    !type(aerlist_t),    intent(in)  :: bulk_aerosol_list(:)
+    ! does not work: errors with
+    ! parse_source.CCPPError: No ddt_lib or ddt aerlist_t not in ddt_lib


do we know why this isn't working? Based on the CAM-SIMA PR, I'd hope that this would work.

Yes, looks like it's a host-side plumbing issue. Claude took a stab at it in ESCOMP/CAM-SIMA@c42fc3c

If that looks reasonable, I am happy to use it and thread things through as opaque ddts. If you think it'll need some more discussion, I can pick that commit out of the BAM PR into a standalone one and work the threading later. Let me know which is your preference! Thanks!

peverwhee · 2026-08-14T20:53:38Z

+    ! Register aerosol diagnostic history fields for the climate list and all
+    ! active diagnostic lists.
+    do i = id_climate, N_DIAG
+      if (active_calls(i)) then
+        call rad_aer_diag_init(bulk_aerosol_list(i))
+      end if
+    end do


naive question! why are we registering diagnostic history fields here? Why not on the host side (in src/aerosol/radiative_aerosol.F90)?

I think I just put it here because I had to put it somewhere. Now moved to host!

peverwhee · 2026-08-14T20:58:38Z

+    use aerosol_optics_core,       only: aerosol_optics_sw_bin, aerosol_optics_lw_bin
+
+    ! host-model dependency for aerosol objects:
+    use phys_prop,                 only: nrh ! # of relative humidity bins for table lookup


would it be more ccpp-esque for phys_prop to have metadata? So we could pass nrh in as an argument?

(also ot_length below)

Maybe! I think the physprop file is shared with CAM and doesn't have the metadata htmlinclude blocks now so adding them now would diverge the file from CAM (and there's also some gymnastics needed to separate the declarations that have metadata vs not having metadata in the module definitions and some reordering...) - I can add an issue! Or if you feel strongly we have to do it now I am also happy to do it

peverwhee · 2026-08-14T21:04:12Z

+
+    ! Local variables
+    integer  :: iaermod, ibin, nbins, iwav, ilev, icol
+    integer  :: num_aero_models, numrh


looks like numrh is unused

peverwhee · 2026-08-14T21:11:57Z

+      aerostate => aerosol_instances_get_state(iaermod, list_idx=0)
+
+      if (.not. associated(aeroprops)) cycle
+      if (.not. associated(aerostate)) cycle


is it an error if aeroprops is associated but aerostate is not? or is that overkill?

They're initialized (or left uninitialized) as a pair in aerosol_instances_mod.F90 so I think this guard is sufficient!

peverwhee · 2026-08-14T21:18:29Z

+      nbins = aeroprops%nbins()
+
+      ! Sulfate weight percent for hygroscopic_wtp optics
+      sulfwtpct(:ncol, :pver) = aerostate%wgtpct(ncol, pver)


can this just be:

Suggested change

sulfwtpct(:ncol, :pver) = aerostate%wgtpct(ncol, pver)

sulfwtpct = aerostate%wgtpct(ncol, pver)

Thanks, changed!

peverwhee · 2026-08-14T21:31:35Z

+    real(kind_phys) :: absorp_bin(ncol, pver, nlwbands)
+
+    ! Volcanic geometric radius (pointer into constituents)
+    real(kind_phys), target  :: geometric_radius(ncol, pver)


is target right here? It looks like create_aerosol_optics_object on the host side is checking whether geometric_radius is associated, and it would seem that it will always be associated if this is a target rather than a pointer?

It doesn't matter that much because create_aerosol_optics_object also has all of this logic in an identical case('volcanic_radius', 'volcanic_radius1', 'volcanic_radius2', & 'volcanic_radius3', 'volcanic_radius5'), as done below. But maybe could be a bug if those ever got out of sync?

Rabbit hole! In short changed constituents to be target, intent(in), then have a temporary pointer that's default null pointing to it, so it's cleaner now. Thanks for spotting this ugly code!

hplin-ucar added 21 commits May 18, 2026 12:22

Add rebin_seasalt to rebin 4-bin bam prescribed sslt01/2/3/4 to sslta…

03bc889

…/ssltc

Port changes from Francis Vitt: CAM#1500 Fix issue with aerosol optic…

416d7df

…s diagnostics

Various cleanup to move host dependencies out of aerosol_optics CCPP …

e540186

…scheme.

Remove read_water_refindex and move to init phase of aerosol_optics C…

6b64114

…CPP scheme.

Fix diag move

63bb88e

Specify lbound for active_calls due to Fortran standard assuming 1 fo…

aa40fc9

…r lbound of assumed-shape arrays

Fix implicit SAVE by assignment of variable at declaration in Fortran

1db5f77

Fix some logic on refwater idx; add zero stub for rrtmgp snapshot tes…

22e70db

…ting

Fix whitespace

4961c59

Draft ndrop_bam, nucleate_ice_ccpp for microp_aero_bam suite

85ffa76

Add ccpp subdir to avoid ccpp schemes compiling in CAM

10b03d8

Assisted-by: claude-opus:4.6

Move the shared subgrid vertical velocity schemes back since they are…

21c6bcb

… needed for CAM

Fill some meta.. continued for wsub/wsubi compute/scale, ndrop_bam_cc…

6032622

…pp.meta start

Keep filling meta...

9e6090d

Build fixes

fdc2d8c

Add dust_default_radii scheme

48b4bf9

Add initialize_pbuf_aerosols for abstract interface to discover aeros…

67813c1

…ol from pbuf_ N fields

Use WP2/CLUBB variant for computing wsub, wsubi.

dcd2efa

Update to cam64_167

f5ced75

Comment update about CAM behavior

38ba2f8

jimmielin self-assigned this May 18, 2026

jimmielin added this to CAM Development May 18, 2026

jimmielin added enhancement New feature or request aerosols Is related to aerosols (including aerosol physics and chemistry). labels May 18, 2026

hplin-ucar added 3 commits May 18, 2026 14:58

Cleanup errmsg len; add diagnostic schemes

30ca29d

Fix dynamic constituent allocation - unallocated when disabled is not…

3cd6d75

… good

Populate CAM7 suite with microp_aero (BAM/nochem)

e7cb6b4

jimmielin commented May 20, 2026

View reviewed changes

Merge branch 'main' into hplin/bulk_aero_3_rebased_on_main

1372346

jimmielin commented Jul 21, 2026

View reviewed changes

Haipeng Lin and others added 8 commits July 22, 2026 17:55

Merge atmospheric_physics main (9865ef6: ccpp_scheme_utils in prescri…

6cd934c

…bed schemes; diagnostic names in sima_state_diagnostics) into bulk_aero_3_rebased_on_main

Update aerosol_optics to the new aerosol_state wet_volume/water_volum…

1d7906b

…e interface. The diagnostic-list water uptake in modal_aerosol_state (CAM-SIMA) takes t, pmid, h2ommr, cldn and top_lev; thread them through the scheme and the two per-species diagnostic calls.

Exclude cloud-borne (_c1..._c4) modal species from vertical diffusion.

18ef9e6

In CAM these are pbuf fields (qqcw) and never reach the diffusion constituent loop; CAM-SIMA registers them as constituents, so they must be excluded by name like the interstitial modal species.

Set scheme_name from nucleate_ice for downstream qneg labeling.

ea2c165

Mirrors physics_update's qneg3 label in CAM ('nucleatei').

Document mutual exclusion of prescribed_volcanic_aerosol (BAM) with t…

dc9a0e4

…he MAM-side prescribed_stratospheric_aerosol.

Merge branch 'main' into hplin/bulk_aero_3_rebased_on_main

533fdac

nusbaume requested changes Aug 6, 2026

View reviewed changes

hplin-ucar added 2 commits August 6, 2026 16:28

Update correct defaults for aquap

f9a4dfb

Use ccpp_scheme_utils on rebin_seasalt

3332223

jimmielin mentioned this pull request Aug 7, 2026

Determine directory structure for aerosol code #432

Open

hplin-ucar added 6 commits August 6, 2026 22:09

Address review comments

9671361

Assisted-by: claude-opus:5

Further simplify the nucleate_ice_ccpp code now that everything is a …

4d8eb81

…constituent

Merge remote-tracking branch 'upstream/main' into hplin/bulk_aero_3_r…

3d67883

…ebased_on_main # Conflicts: # schemes/microp_aero/ccpp/hetfrz_classnuc_stub.F90 # schemes/microp_aero/ccpp/hetfrz_classnuc_stub.meta # schemes/microp_aero/ccpp/hetfrz_classnuc_stub_namelist.xml

jimmielin requested a review from nusbaume August 13, 2026 18:30

nusbaume approved these changes Aug 14, 2026

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nusbaume requested a review from peverwhee August 14, 2026 17:08

peverwhee requested changes Aug 14, 2026

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hplin-ucar added 2 commits August 17, 2026 09:57

Address review comments

2b4b207

Fix Fortitude linting issues

d54e767

		index(cnst_name, 'NUMLIQ') > 0 .or. & ! micro_pumas_cam if modal/trop_strat carma
		index(cnst_name, 'mass_number_concentration_of_cloud_liquid_wrt_moist_air_and_condensed_water') > 0) then

	sulfwtpct(:ncol, :pver) = aerostate%wgtpct(ncol, pver)
	sulfwtpct = aerostate%wgtpct(ncol, pver)

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jimmielin Aug 17, 2026 • edited Loading Uh oh! There was an error while loading. Please reload this page.

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jimmielin commented May 18, 2026 •

edited

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jimmielin Aug 17, 2026 •

edited

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