From a2eb29b3cd35bdc4c81823f644081f36756a7ac3 Mon Sep 17 00:00:00 2001 From: Cheryl Craig Date: Wed, 18 Mar 2026 15:19:13 -0600 Subject: [PATCH 1/7] namelist changes to support spin-up run --- bld/build-namelist | 4 +- bld/namelist_files/namelist_defaults_cam.xml | 49 +++++++++++--------- 2 files changed, 30 insertions(+), 23 deletions(-) diff --git a/bld/build-namelist b/bld/build-namelist index 29777bc449..9165a18b4e 100755 --- a/bld/build-namelist +++ b/bld/build-namelist @@ -3399,7 +3399,7 @@ if ($cfg->get('microphys') =~ /^mg/) { $micro_mg_dcs = '500.D-6'; } elsif ($phys eq 'cam7') { - $micro_mg_dcs = '600.D-6'; + $micro_mg_dcs = '450.D-6'; } } @@ -3929,7 +3929,7 @@ if ($waccm_phys or my $hdepth_scaling = '0.25D0' ; #MT value if ($cfg->get('model_top') eq 'mt') { - $hdepth_scaling = '0.32D0'; + $hdepth_scaling = '0.29D0'; } my $qbo_forcing = '.false.'; if ($dyn eq 'fv') { diff --git a/bld/namelist_files/namelist_defaults_cam.xml b/bld/namelist_files/namelist_defaults_cam.xml index 75acdede44..d4008d3085 100644 --- a/bld/namelist_files/namelist_defaults_cam.xml +++ b/bld/namelist_files/namelist_defaults_cam.xml @@ -824,12 +824,12 @@ 1.0D0 1.0D0 -0.5D0 -0.5D0 +0.75D0 +0.75D0 1.0D0 -0.5D0 -0.5D0 +0.75D0 +0.75D0 0.03D0 @@ -899,6 +899,7 @@ 0.1d0 0.01d0 1.0d0 + 1.5d0 65000.0d0 32500.0d0 1 @@ -2186,6 +2187,7 @@ 0.75 0.5 0.3 + 0.280 0.125 1.25 0.25 @@ -2376,6 +2378,7 @@ 1.D0 1.D0 + 0.731D0 0.01D0 0.01D0 @@ -2383,8 +2386,9 @@ -1.1D0 -1.1D0 - 2.47D0 - 2.47D0 + 2.47D0 + 2.47D0 + 2.37D0 2.D0 @@ -2392,8 +2396,10 @@ 1.D0 1.D0 + 0.9D0 1.D0 + 1.5D0 0.2D0 0.1D0 @@ -2407,6 +2413,7 @@ 25.D-6 1.D0 + 1.39D0 1.D0 1.D0 @@ -2528,7 +2535,7 @@ 0.45D0 0.45D0 0.88D0 -4.00D0 +3.20D0 0.75D0 4.00D0 1.13D0 @@ -2539,31 +2546,31 @@ 0.55D0 0.22D0 1.75D0 -4.00D0 +3.20D0 4.00D0 2.0D0 -4.0D0 +3.2D0 2.0D0 -4.0D0 +3.2D0 2.0D0 -4.0D0 +3.2D0 2.0D0 -4.0D0 +3.2D0 2.0D0 -4.0D0 +3.2D0 2.0D0 -4.0D0 +3.2D0 1.75D0 -4.0D0 +3.2D0 0.65D0 -4.0D0 +3.2D0 1.75D0 -4.0D0 +3.2D0 0.6D0 -4.0D0 +3.2D0 2.25D0 -4.0D0 +3.2D0 Zender_2003 @@ -2722,7 +2729,7 @@ 0.14D0 0.10D0 0.10D0 - 0.05D0 + 0.129D0 0.10D0 0.10D0 @@ -2850,7 +2857,7 @@ 0.0035D0 0.0035D0 0.0075D0 - 0.0075D0 + 0.00549D0 0.0035D0 0.0035D0 From f27b8b150c4c7093d4944673dec85885cdd895ac Mon Sep 17 00:00:00 2001 From: Cheryl Craig Date: Wed, 18 Mar 2026 15:56:27 -0600 Subject: [PATCH 2/7] Fix one additional namelist variable --- bld/namelist_files/namelist_defaults_cam.xml | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/bld/namelist_files/namelist_defaults_cam.xml b/bld/namelist_files/namelist_defaults_cam.xml index d4008d3085..573581164a 100644 --- a/bld/namelist_files/namelist_defaults_cam.xml +++ b/bld/namelist_files/namelist_defaults_cam.xml @@ -2547,7 +2547,7 @@ 0.22D0 1.75D0 3.20D0 -4.00D0 +3.20D0 2.0D0 3.2D0 2.0D0 From 79e9a1cda7b85d2a287fc2c330d82621520a8dd7 Mon Sep 17 00:00:00 2001 From: Cheryl Craig Date: Wed, 18 Mar 2026 16:46:53 -0600 Subject: [PATCH 3/7] Add updated ndep file --- bld/namelist_files/namelist_defaults_cam.xml | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/bld/namelist_files/namelist_defaults_cam.xml b/bld/namelist_files/namelist_defaults_cam.xml index 573581164a..2cb557182a 100644 --- a/bld/namelist_files/namelist_defaults_cam.xml +++ b/bld/namelist_files/namelist_defaults_cam.xml @@ -2095,7 +2095,7 @@ share/meshes/fv0.9x1.25_141008_polemod_ESMFmesh.nc lnd/clm2/ndepdata/fndep_clm_hist_b.e21.BWHIST.f09_g17.CMIP6-historical-WACCM.ensmean_1849-2015_monthly_0.9x1.25_c180926.nc -lnd/clm2/ndepdata/fndep_clm_WACCM6_CMIP6piControl001_y21-50avg_1850monthly_0.95x1.25_c180802.nc +atm/cam/chem/trop_strat_mam5_ts4_aero_spinup/ndep/fndep_clm_B1850C_MT4s.1850monthly.ne30_c251220.nc .false. From 5e07804cf2cc9f3339aaba922552462afafb3400 Mon Sep 17 00:00:00 2001 From: Cheryl Craig Date: Thu, 19 Mar 2026 07:57:52 -0600 Subject: [PATCH 4/7] Address review comments --- bld/build-namelist | 4 ++-- bld/namelist_files/namelist_defaults_cam.xml | 16 ++++++++-------- 2 files changed, 10 insertions(+), 10 deletions(-) diff --git a/bld/build-namelist b/bld/build-namelist index 9165a18b4e..0e87eb78b5 100755 --- a/bld/build-namelist +++ b/bld/build-namelist @@ -3929,7 +3929,7 @@ if ($waccm_phys or my $hdepth_scaling = '0.25D0' ; #MT value if ($cfg->get('model_top') eq 'mt') { - $hdepth_scaling = '0.29D0'; + $hdepth_scaling = '0.32D0'; } my $qbo_forcing = '.false.'; if ($dyn eq 'fv') { @@ -3952,7 +3952,7 @@ if ($waccm_phys or # cam7 settings for model_top = 'lt' add_default($nl, 'use_gw_front' , 'val'=>'.true.'); $use_gw_convect_dp = '.true.'; - add_default($nl, 'gw_qbo_hdepth_scaling', 'val'=>'0.32D0'); + add_default($nl, 'gw_qbo_hdepth_scaling', 'val'=>'0.29D0'); } else { add_default($nl, 'use_gw_front' , 'val'=>'.false.'); } diff --git a/bld/namelist_files/namelist_defaults_cam.xml b/bld/namelist_files/namelist_defaults_cam.xml index 2cb557182a..b1d688ef15 100644 --- a/bld/namelist_files/namelist_defaults_cam.xml +++ b/bld/namelist_files/namelist_defaults_cam.xml @@ -2549,28 +2549,28 @@ 3.20D0 3.20D0 2.0D0 -3.2D0 +4.0D0 2.0D0 -3.2D0 +4.0D0 2.0D0 3.2D0 2.0D0 -3.2D0 +4.0D0 2.0D0 3.2D0 2.0D0 -3.2D0 +4.0D0 1.75D0 3.2D0 0.65D0 -3.2D0 +4.0D0 1.75D0 -3.2D0 +4.0D0 0.6D0 -3.2D0 +4.0D0 2.25D0 -3.2D0 +4.0D0 Zender_2003 From 6f75857626d10619c2fbe5dee97cf477905ff15f Mon Sep 17 00:00:00 2001 From: Cheryl Craig Date: Thu, 19 Mar 2026 08:40:42 -0600 Subject: [PATCH 5/7] More review changes --- bld/build-namelist | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/bld/build-namelist b/bld/build-namelist index 0e87eb78b5..f6a87f4047 100755 --- a/bld/build-namelist +++ b/bld/build-namelist @@ -3926,10 +3926,10 @@ if ($waccm_phys or add_default($nl, 'use_gw_front' , 'val'=>'.true.'); $use_gw_convect_dp = '.true.'; #WACCM value - my $hdepth_scaling = '0.25D0' ; + my $hdepth_scaling = '0.29D0' ; #MT value if ($cfg->get('model_top') eq 'mt') { - $hdepth_scaling = '0.32D0'; + $hdepth_scaling = '0.29D0' } my $qbo_forcing = '.false.'; if ($dyn eq 'fv') { From ddca361cf06c15c1c62da7734ed7699e48dfd3f1 Mon Sep 17 00:00:00 2001 From: Cheryl Craig Date: Thu, 19 Mar 2026 14:33:00 -0600 Subject: [PATCH 6/7] Mods for dust for the spin-up run --- bld/namelist_files/namelist_defaults_cam.xml | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/bld/namelist_files/namelist_defaults_cam.xml b/bld/namelist_files/namelist_defaults_cam.xml index b1d688ef15..b5c48835fb 100644 --- a/bld/namelist_files/namelist_defaults_cam.xml +++ b/bld/namelist_files/namelist_defaults_cam.xml @@ -2548,12 +2548,10 @@ 1.75D0 3.20D0 3.20D0 -2.0D0 -4.0D0 +2.0D0 +3.2D0 2.0D0 4.0D0 -2.0D0 -3.2D0 2.0D0 4.0D0 2.0D0 From e010cf06d52fcd23c0dfce36af77144b86d9c37b Mon Sep 17 00:00:00 2001 From: Cheryl Craig Date: Fri, 20 Mar 2026 19:49:14 -0600 Subject: [PATCH 7/7] ChangeLog for cam6_4_157 --- doc/ChangeLog | 95 ++++++++++++++++++++++++++++++++++++++++++++++++--- 1 file changed, 91 insertions(+), 4 deletions(-) diff --git a/doc/ChangeLog b/doc/ChangeLog index c71906ad22..44ec7d2501 100644 --- a/doc/ChangeLog +++ b/doc/ChangeLog @@ -1,3 +1,90 @@ + +=============================================================== + +Tag name: cam6_4_157 +Originator(s): cacraigucar +Date: Mar 20, 2026 +One-line Summary: namelist changes to support spin-up run +Github PR URL: https://github.com/ESCOMP/CAM/pull/1509 + +Purpose of changes (include the issue number and title text for each relevant GitHub issue): + - Update the namelist to match Cecile's settings for the spin-up run: https://github.com/ESCOMP/CAM/issues/1507 + - Update 1850 aerosol and ndep datasets for CAM: https://github.com/ESCOMP/CAM/issues/1499 + +Describe any changes made to build system: N/A + +Describe any changes made to the namelist: namelist tunings per issue 1507 + +List any changes to the defaults for the boundary datasets: N/A + +Describe any substantial timing or memory changes: N/A + +Code reviewed by: PeterHjortLauritzen, nusbaume + +List all files eliminated: N/A + +List all files added and what they do: N/A + +List all existing files that have been modified, and describe the changes: +M bld/build-namelist +M bld/namelist_files/namelist_defaults_cam.xml + - namelist settings modified + +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: + FAIL ERI_D_Ln18.ne16pg3_ne16pg3_mt232.FHIST_C4.derecho_intel.cam-outfrq3s_eri + - pre-existing failure + ERI bug in CICE -- See: https://github.com/ESCOMP/CESM_CICE/issues/34 + + ERC_D_Ln9.mpasa120_mpasa120.FHISTC_LTso.derecho_intel.cam-outfrq9s_mpasa120 (Overall: DIFF) details: + ERC_D_Ln9.mpasa120_mpasa120.QPC7.derecho_intel.cam-outfrq9s_mpasa120 (Overall: DIFF) details: + ERC_D_Ln9.ne30pg2_ne30pg2_mt232.QPC7.derecho_intel.cam-outfrq9s (Overall: DIFF) details: + ERC_D_Ln9.ne30pg3_ne30pg3_mt232.F1850C_LTso.derecho_intel.cam-outfrq9s (Overall: DIFF) details: + ERI_D_Ln18.ne30pg3_ne30pg3_mt232.FHISTC_LTso.derecho_intel.cam-outfrq3s_eri (Overall: DIFF) details: + ERP_D_Ln9.ne30pg3_ne30pg3_mt232.F1850C_MTso.derecho_intel.cam-outfrq9s (Overall: DIFF) details: + ERP_Ld3.ne16pg3_ne16pg3_mg17.FHISTC_WAt1ma.derecho_intel.cam-reduced_hist1d (Overall: DIFF) details: + ERP_Ld3.ne30pg3_ne30pg3_mt232.FHISTC_MTt4s.derecho_intel.cam-outfrq1d_aoa (Overall: DIFF) details: + ERP_Ln9.f19_f19_mg17.FWsc1850.derecho_intel.cam-outfrq9s (Overall: DIFF) details: + ERP_Ln9.ne30pg3_ne30pg3_mg17.FHISTC_WAma.derecho_intel.cam-outfrq9s (Overall: DIFF) details: + ERR_Ln9.ne16pg3_ne16pg3_mt232.FHISTC_LTso.derecho_intel.cam-outfrq9s_bwic (Overall: DIFF) details: + ERS_Ln9.f09_f09_mg17.FX2000.derecho_intel.cam-outfrq9s (Overall: DIFF) details: + ERS_Ln9.ne30pg3_ne30pg3_mg17.FHISTC_WXma.derecho_intel.cam-outfrq9s_ctem (Overall: DIFF) details: + SMS_C2_D_Ln9.ne16pg3_ne16pg3_mg17.FHISTC_WXma.derecho_intel.cam-outfrq9s (Overall: DIFF) details: + SMS_D_Ln9.ne16_ne16_mg17.QPX2000.derecho_intel.cam-outfrq9s_amie (Overall: DIFF) details: + SMS_D_Ln9.ne30pg3_ne30pg3_mt232.FHISTC_MTso.derecho_intel.cam-outfrq9s (Overall: DIFF) details: + SMS_D_Ln9_P1280x1.ne30pg3_ne30pg3_mt232.FHISTC_MTt1s.derecho_intel.cam-outfrq9s_Leung_dust (Overall: DIFF) details: + SMS_Ld1.f09_f09_mg17.FW2000climo.derecho_intel.cam-outfrq1d (Overall: DIFF) details: + SMS_Ln9.f09_f09_mg17.FW1850.derecho_intel.cam-reduced_hist3s (Overall: DIFF) details: + SMS_Ln9.ne30pg3_ne30pg3_mg17.FW2000climo.derecho_intel.cam-outfrq9s_rrtmgp (Overall: DIFF) details: + - Namelist and answer differences expected for CAM7 + +derecho/nvhpc/aux_cam: + ERS_Ln9.ne30pg3_ne30pg3_mt232.FHISTC_LTso.derecho_nvhpc.cam-outfrq9s_gpu_default (Overall: DIFF) details: + - Namelist and answer differences expected for CAM7 + +izumi/nag/aux_cam: + ERC_D_Ln9.mpasa480_mpasa480_mt232.QPC7.izumi_nag.cam-outfrq9s_mpasa480 (Overall: DIFF) details: + ERC_D_Ln9.ne3pg3_ne3pg3_mt232.FHISTC_LTso.izumi_nag.cam-cosp_rad_diags (Overall: DIFF) details: + ERC_D_Ln9.ne3pg3_ne3pg3_mt232.FHISTC_LTso.izumi_nag.cam-outfrq9s_nochem (Overall: DIFF) details: + SMS_D_Ln3.ne5pg3_ne5pg3_mg37.QPX2000.izumi_nag.cam-outfrq3s (Overall: DIFF) details: + SMS_D_Ln6.ne5_ne5_mg37.QPWmaC4.izumi_nag.cam-outfrq3s_physgrid_tem (Overall: DIFF) details: + SMS_D_Ln9.f10_f10_mt232.F1850.izumi_nag.cam-outfrq9s (Overall: DIFF) details: + - Namelist and answer differences expected for CAM7 + +izumi/gnu/aux_cam: + ERC_D_Ln9.mpasa480_mpasa480_mt232.FHISTC_LTso.izumi_gnu.cam-outfrq9s_mpasa480 (Overall: DIFF) details: + ERC_D_Ln9.ne3pg3_ne3pg3_mt232.F1850_C4.izumi_gnu.cam-co2rmp (Overall: DIFF) details: + ERC_D_Ln9.ne3pg3_ne3pg3_mt232.FHISTC_LTso.izumi_gnu.cam-sat_lcltod (Overall: DIFF) details: + ERC_D_Ln9.ne3pg3_ne3pg3_mt232.QPC7.izumi_gnu.cam-outfrq9s (Overall: DIFF) details: + - Namelist and answer differences expected for CAM7 + + SMS_D_Ln3.ne3pg3_ne3pg3_mt232.PC7.izumi_gnu.cam-pc7_ne3pg3 (Overall: NLFAIL) details: + - Namelist differences expected for CAM7 + =============================================================== Tag name: cam6_4_156 @@ -64,7 +151,7 @@ derecho/intel/aux_cam: FAIL ERI_D_Ln18.ne16pg3_ne16pg3_mt232.FHIST_C4.derecho_intel.cam-outfrq3s_eri - pre-existing failure ERI bug in CICE -- See: https://github.com/ESCOMP/CESM_CICE/issues/34 - + DIFF ERP_D_Ln9.ne30pg3_ne30pg3_mt232.F1850C_MTso.derecho_intel.cam-outfrq9s - expected difference due to corrections to prescribed volcanic aerosols @@ -91,7 +178,7 @@ derecho/intel/aux_cam: derecho/nvhpc/aux_cam: All PASS izumi/nag/aux_cam: - DIFF ERC_D_Ln9.ne3pg3_ne3pg3_mt232.FHISTC_LTso.izumi_nag.cam-outfrq9s_nochem + DIFF ERC_D_Ln9.ne3pg3_ne3pg3_mt232.FHISTC_LTso.izumi_nag.cam-outfrq9s_nochem DIFF SMS_D_Ln6.ne5_ne5_mg37.QPWmaC4.izumi_nag.cam-outfrq3s_physgrid_tem - differences in fill patterns of AOD diags, otherwise bit-for-bit unchanged @@ -99,7 +186,7 @@ izumi/gnu/aux_cam: DIFF ERC_D_Ln9.f10_f10_mg37.QPC4.izumi_gnu.cam-outfrq3s_diags - differences in fill patterns of AOD diags and other aerosol optics now includes BAM aerosols, otherwise bit-for-bit unchanged - + DIFF ERC_D_Ln9.f10_f10_mt232.FHIST_C5.izumi_gnu.cam-rad_diag DIFF ERC_D_Ln9.ne3pg3_ne3pg3_mt232.F1850_C4.izumi_gnu.cam-co2rmp DIFF ERC_D_Ln9.ne3pg3_ne3pg3_mt232.FHIST.izumi_gnu.cam-nochem_clubbmf @@ -111,7 +198,7 @@ izumi/gnu/aux_cam: DIFF SMS_D_Ln9.f19_f19_mt232.FW4madSD.izumi_gnu.cam-outfrq9s - default output now includes diameters all 5 modes (for history_cesm_forcing=.true.) otherwise bit-for-bit unchanged - + Summarize any changes to answers: larger than roundoff for F1850C_MTso compset, otherwise bit-for-bit unchanged