cam6_4_183: Complete CCPPization of cloud fraction for two-moment microphys (cldfrc2m)

.gitmodules

@@ -29,7 +29,7 @@
 [submodule "atmos_phys"]
 	path = src/atmos_phys
 	url = https://github.com/ESCOMP/atmospheric_physics
-	fxtag = atmos_phys0_22_003
+	fxtag = atmos_phys0_23_000
         fxrequired = AlwaysRequired
         fxDONOTUSEurl = https://github.com/ESCOMP/atmospheric_physics
 

bld/namelist_files/namelist_definition.xml

@@ -3268,7 +3268,7 @@ Default: 700.e2 for CAM5, CAM6 and CAM7; all others=> 750.e2
 <entry id="cldfrc_iceopt" type="integer" category="conv"
        group="cldfrc_nl" valid_values="" >
 Scheme for ice cloud fraction: 1=wang &amp; sassen, 2=schiller (iciwc),
-3=wood &amp; field, 4=Wilson (based on smith), 5=modified slingo (ssat &amp; empyt cloud)
+3=wood &amp; field, 4=Wilson (based on smith), 5=modified slingo (ssat &amp; empty cloud)
 Default: set by build-namelist
 </entry>
 
@@ -3304,7 +3304,7 @@ Default: set by build-namelist
 
 <entry id="cldfrc2m_qist_min" type="real" category="conv"
        group="cldfrc2m_nl" valid_values="" >
-Minimum in-stratus IWC constraint [ kg/kg ]
+Minimum in-stratus IWC constraint greater than 0 [ kg/kg ]
 Default: set by build-namelist
 </entry>
 

cime_config/testdefs/testlist_cam.xml

@@ -334,14 +334,14 @@
     </options>
   </test>
 
-  <test compset="FCARMA2000climo" grid="f19_f19_mg17" name="SMS_D_Ln9" testmods="cam/outfrq9s" supported="false">
+  <test compset="FCARMA2000climo" grid="f19_f19_mg17" name="SMS_D_Ln9" testmods="cam/outfrq9s_carma_rad_diag" supported="false">
     <machines>
       <machine name="derecho" compiler="intel" category="aux_cam"/>
       <machine name="derecho" compiler="intel" category="carma"/>
     </machines>
     <options>
       <option name="wallclock">00:40:00</option>
-      <option name="comment">CARMA trop_strat model test</option>
+      <option name="comment">CARMA trop_strat, rad_diag w/ sectional CARMA bins</option>
     </options>
   </test>
   <test compset="FWmaCARMAHIST" grid="f19_f19_mg17" name="SMS_D_Ln9" testmods="cam/outfrq9s" supported="false">

cime_config/testdefs/testmods_dirs/cam/outfrq9s_carma_rad_diag/shell_commands

@@ -0,0 +1,2 @@
+./xmlchange ROF_NCPL=\$ATM_NCPL
+./xmlchange GLC_NCPL=\$ATM_NCPL

cime_config/testdefs/testmods_dirs/cam/outfrq9s_carma_rad_diag/user_nl_cam

@@ -0,0 +1,78 @@
+mfilt=1,1,1,1,1,1
+ndens=1,1,1,1,1,1
+nhtfrq=9,9,9,9,9,9
+write_nstep0=.true.
+inithist='ENDOFRUN'
+
+rad_diag_1 = 'A:Q:H2O', 'N:O2:O2', 'A:CO2:CO2', 'A:O3:O3', 'A:N2O:N2O', 'A:CH4:CH4',
+ 'N:CFC11:CFC11', 'N:CFC12:CFC12'
+
+rad_diag_2 = 'A:Q:H2O', 'N:O2:O2', 'A:CO2:CO2', 'A:O3:O3', 'A:N2O:N2O', 'A:CH4:CH4',
+ 'N:CFC11:CFC11', 'N:CFC12:CFC12',
+ 'B:MXAER01:$DIN_LOC_ROOT/atm/cam/chem/carma/rrtmg/aerosol_cld_CRMIX01_rrtmg.nc',
+ 'B:MXAER02:$DIN_LOC_ROOT/atm/cam/chem/carma/rrtmg/aerosol_cld_CRMIX02_rrtmg.nc',
+ 'B:MXAER03:$DIN_LOC_ROOT/atm/cam/chem/carma/rrtmg/aerosol_cld_CRMIX03_rrtmg.nc',
+ 'B:MXAER04:$DIN_LOC_ROOT/atm/cam/chem/carma/rrtmg/aerosol_cld_CRMIX04_rrtmg.nc',
+ 'B:MXAER05:$DIN_LOC_ROOT/atm/cam/chem/carma/rrtmg/aerosol_cld_CRMIX05_rrtmg.nc',
+ 'B:MXAER06:$DIN_LOC_ROOT/atm/cam/chem/carma/rrtmg/aerosol_cld_CRMIX06_rrtmg.nc',
+ 'B:MXAER07:$DIN_LOC_ROOT/atm/cam/chem/carma/rrtmg/aerosol_cld_CRMIX07_rrtmg.nc',
+ 'B:MXAER08:$DIN_LOC_ROOT/atm/cam/chem/carma/rrtmg/aerosol_cld_CRMIX08_rrtmg.nc',
+ 'B:MXAER09:$DIN_LOC_ROOT/atm/cam/chem/carma/rrtmg/aerosol_cld_CRMIX09_rrtmg.nc',
+ 'B:MXAER10:$DIN_LOC_ROOT/atm/cam/chem/carma/rrtmg/aerosol_cld_CRMIX10_rrtmg.nc',
+ 'B:MXAER11:$DIN_LOC_ROOT/atm/cam/chem/carma/rrtmg/aerosol_cld_CRMIX11_rrtmg.nc',
+ 'B:MXAER12:$DIN_LOC_ROOT/atm/cam/chem/carma/rrtmg/aerosol_cld_CRMIX12_rrtmg.nc',
+ 'B:MXAER13:$DIN_LOC_ROOT/atm/cam/chem/carma/rrtmg/aerosol_cld_CRMIX13_rrtmg.nc',
+ 'B:MXAER14:$DIN_LOC_ROOT/atm/cam/chem/carma/rrtmg/aerosol_cld_CRMIX14_rrtmg.nc',
+ 'B:MXAER15:$DIN_LOC_ROOT/atm/cam/chem/carma/rrtmg/aerosol_cld_CRMIX15_rrtmg.nc',
+ 'B:MXAER16:$DIN_LOC_ROOT/atm/cam/chem/carma/rrtmg/aerosol_cld_CRMIX16_rrtmg.nc',
+ 'B:MXAER17:$DIN_LOC_ROOT/atm/cam/chem/carma/rrtmg/aerosol_cld_CRMIX17_rrtmg.nc',
+ 'B:MXAER18:$DIN_LOC_ROOT/atm/cam/chem/carma/rrtmg/aerosol_cld_CRMIX18_rrtmg.nc',
+ 'B:MXAER19:$DIN_LOC_ROOT/atm/cam/chem/carma/rrtmg/aerosol_cld_CRMIX19_rrtmg.nc',
+ 'B:MXAER20:$DIN_LOC_ROOT/atm/cam/chem/carma/rrtmg/aerosol_cld_CRMIX20_rrtmg.nc'
+
+! rad_diag_3 uses the aerosol optics files generated by CARMA in the run
+! directory at initialization when carma_do_optics is enabled.
+carma_do_optics = .true.
+
+rad_diag_3 = 'A:Q:H2O', 'N:O2:O2', 'A:CO2:CO2', 'A:O3:O3', 'A:N2O:N2O', 'A:CH4:CH4',
+ 'N:CFC11:CFC11', 'N:CFC12:CFC12',
+ 'B:MXAER01:trop_strat_soa5_MXAER01_rrtmg.nc',
+ 'B:MXAER02:trop_strat_soa5_MXAER02_rrtmg.nc',
+ 'B:MXAER03:trop_strat_soa5_MXAER03_rrtmg.nc',
+ 'B:MXAER04:trop_strat_soa5_MXAER04_rrtmg.nc',
+ 'B:MXAER05:trop_strat_soa5_MXAER05_rrtmg.nc',
+ 'B:MXAER06:trop_strat_soa5_MXAER06_rrtmg.nc',
+ 'B:MXAER07:trop_strat_soa5_MXAER07_rrtmg.nc',
+ 'B:MXAER08:trop_strat_soa5_MXAER08_rrtmg.nc',
+ 'B:MXAER09:trop_strat_soa5_MXAER09_rrtmg.nc',
+ 'B:MXAER10:trop_strat_soa5_MXAER10_rrtmg.nc',
+ 'B:MXAER11:trop_strat_soa5_MXAER11_rrtmg.nc',
+ 'B:MXAER12:trop_strat_soa5_MXAER12_rrtmg.nc',
+ 'B:MXAER13:trop_strat_soa5_MXAER13_rrtmg.nc',
+ 'B:MXAER14:trop_strat_soa5_MXAER14_rrtmg.nc',
+ 'B:MXAER15:trop_strat_soa5_MXAER15_rrtmg.nc',
+ 'B:MXAER16:trop_strat_soa5_MXAER16_rrtmg.nc',
+ 'B:MXAER17:trop_strat_soa5_MXAER17_rrtmg.nc',
+ 'B:MXAER18:trop_strat_soa5_MXAER18_rrtmg.nc',
+ 'B:MXAER19:trop_strat_soa5_MXAER19_rrtmg.nc',
+ 'B:MXAER20:trop_strat_soa5_MXAER20_rrtmg.nc',
+ 'B:PRSUL01:trop_strat_soa5_PRSUL01_rrtmg.nc',
+ 'B:PRSUL02:trop_strat_soa5_PRSUL02_rrtmg.nc',
+ 'B:PRSUL03:trop_strat_soa5_PRSUL03_rrtmg.nc',
+ 'B:PRSUL04:trop_strat_soa5_PRSUL04_rrtmg.nc',
+ 'B:PRSUL05:trop_strat_soa5_PRSUL05_rrtmg.nc',
+ 'B:PRSUL06:trop_strat_soa5_PRSUL06_rrtmg.nc',
+ 'B:PRSUL07:trop_strat_soa5_PRSUL07_rrtmg.nc',
+ 'B:PRSUL08:trop_strat_soa5_PRSUL08_rrtmg.nc',
+ 'B:PRSUL09:trop_strat_soa5_PRSUL09_rrtmg.nc',
+ 'B:PRSUL10:trop_strat_soa5_PRSUL10_rrtmg.nc',
+ 'B:PRSUL11:trop_strat_soa5_PRSUL11_rrtmg.nc',
+ 'B:PRSUL12:trop_strat_soa5_PRSUL12_rrtmg.nc',
+ 'B:PRSUL13:trop_strat_soa5_PRSUL13_rrtmg.nc',
+ 'B:PRSUL14:trop_strat_soa5_PRSUL14_rrtmg.nc',
+ 'B:PRSUL15:trop_strat_soa5_PRSUL15_rrtmg.nc',
+ 'B:PRSUL16:trop_strat_soa5_PRSUL16_rrtmg.nc',
+ 'B:PRSUL17:trop_strat_soa5_PRSUL17_rrtmg.nc',
+ 'B:PRSUL18:trop_strat_soa5_PRSUL18_rrtmg.nc',
+ 'B:PRSUL19:trop_strat_soa5_PRSUL19_rrtmg.nc',
+ 'B:PRSUL20:trop_strat_soa5_PRSUL20_rrtmg.nc'

cime_config/testdefs/testmods_dirs/cam/outfrq9s_carma_rad_diag/user_nl_clm

@@ -0,0 +1,3 @@
+hist_nhtfrq = 9
+hist_mfilt  = 1
+hist_ndens  = 1

doc/ChangeLog

@@ -1,5 +1,101 @@
 ===============================================================
 
+Tag name: cam6_4_183
+Originator(s): jimmielin
+Date: 22 Jun 2026
+One-line Summary: Complete CCPPization of cloud fraction for two-moment microphys (cldfrc2m); Add rad_diag CARMA testmod to existing Derecho FCARMA2000climo test
+Github PR URL: https://github.com/ESCOMP/CAM/pull/1522
+
+Purpose of changes (include the issue number and title text for each relevant GitHub issue):
+- Closes #1521 - Move two-moment cloud fraction scheme (cldfrc2m) to atmos_phys as compute_cloud_fraction_two_moment.
+- cldfrc2m is used broadly across CAM physics (cldwat2m_macro, clubb_intr, CARMA cirrus models) and its namelist parameters are pulled in via USE statements in many places. Moving the computational routines to atmos_phys and making cldfrc2m a thin CAM shim for namelist I/O and parameter distribution facilitates CCPP port of CLUBB, PUMAS, etc. as these namelist parameters will cleanly flow via standard names
+- Added keyword arguments calling into cldfrc for rh threshold etc. for clarity
+- Closes #1560 - Extend CARMA test on Derecho/Intel with rad_diag testing
+
+Describe any changes made to build system: N/A
+
+Describe any changes made to the namelist: N/A
+
+List any changes to the defaults for the boundary datasets: N/A
+
+Describe any substantial timing or memory changes: N/A
+
+Code reviewed by: nusbaume, fvitt (CARMA fix), peverwhee (atmos_phys)
+
+List all files eliminated: N/A
+
+List all files added and what they do:
+A       cime_config/testdefs/testmods_dirs/cam/outfrq9s_carma_rad_diag/shell_commands
+A       cime_config/testdefs/testmods_dirs/cam/outfrq9s_carma_rad_diag/user_nl_cam
+A       cime_config/testdefs/testmods_dirs/cam/outfrq9s_carma_rad_diag/user_nl_clm
+  - new testmod that exercises rad_diag for CARMA (prev only Izumi for MAM)
+  - new testmod that exercises carma_do_optics for CARMA to write out optics files
+
+List all existing files that have been modified, and describe the changes:
+
+M       .gitmodules
+M       src/atmos_phys
+  - update atmos_phys to atmos_phys0_23_000.
+
+M       bld/namelist_files/namelist_definition.xml
+  - fix typo
+
+M       cime_config/testdefs/testlist_cam.xml
+  - update Derecho Intel FCARMA test to use the new outfrq9s_carma_rad_diag testmod.
+
+M       src/physics/cam/cldfrc2m.F90
+  - Move computational subroutines (astG_PDF, astG_RHU, astG_PDF_single,
+    astG_RHU_single, aist_single, aist_vector) to atmos_phys
+    compute_cloud_fraction_two_moment.
+  - Keep readnl, init, and public namelist-derived constants
+    (rhmini_const, rhmaxi_const, rhminis_const, rhmaxis_const,
+    rhminl_const, rhminl_adj_land_const, rhminh_const).
+  - init now calls compute_cloud_fraction_two_moment_init and
+    cldfrc_getparams to distribute parameters.
+  - Newly exposes rhminl_const, rhminl_adj_land_const, rhminh_const
+    (previously internal) so callers can pass them in explicitly.
+
+M       src/physics/cam/cldwat2m_macro.F90
+  - USE compute_cloud_fraction_two_moment directly for subroutines;
+    USE cldfrc2m shim only for rh constants.
+
+M       src/physics/cam/clubb_intr.F90
+  - USE compute_cloud_fraction_two_moment for aist_vector;
+    USE cldfrc2m shim for rh constants including newly-exposed rhminl_const,
+    rhminl_adj_land_const, rhminh_const.
+
+M       src/physics/carma/models/cirrus/carma_cloudfraction.F90
+M       src/physics/carma/models/cirrus_dust/carma_cloudfraction.F90
+  - USE compute_cloud_fraction_two_moment for subroutines;
+    USE cldfrc2m shim for rh constants.
+
+If there were any failures reported from running test_driver.sh on any test
+platform, and checkin with these failures has been OK'd by the gatekeeper,
+then copy the lines from the td.*.status files for the failed tests to the
+appropriate machine below.  All failed tests must be justified.
+
+derecho/intel/aux_cam:
+  SMS_D_Ln9.f19_f19_mg17.FCARMA2000climo.derecho_intel.cam-outfrq9s_carma_rad_diag (Overall: DIFF) details:
+    - the testmod for this test changed to "outfrq9s_carma_rad_diag".
+      I cprnc'd the baseline files manually against
+      /glade/campaign/cesm/community/amwg/cam_baselines/cam6_4_182_intel/
+      SMS_D_Ln9.f19_f19_mg17.FCARMA2000climo.derecho_intel.cam-outfrq9s
+      The cam.h0a file differs only in the field lists due to new variables introduced in rad_diag_2 and 3.
+      The other files are IDENTICAL.
+
+derecho/nvhpc/aux_cam: All PASS
+
+izumi/nag/aux_cam:
+  ERC_D_Ln9.f10_f10_mt232.FHIST_C5.izumi_nag.cam-outfrq3s_subcol (Overall: FAIL) details:
+    FAIL ERC_D_Ln9.f10_f10_mt232.FHIST_C5.izumi_nag.cam-outfrq3s_subcol COMPARE_base_rest
+    - pre-existing failure.
+
+izumi/gnu/aux_cam: All PASS
+
+Summarize any changes to answers: All B4B
+
+===============================================================
+
 Tag name: cam6_4_182
 Originator(s): fvitt
 Date: 16 Jun 2026