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Merged
cacraigucar merged 23 commits into from
Dec 22, 2025
Merged

cam6_4_138: Leung_2023 dust cycle updates #1438

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f4f828d
dmleung added the effects of coarse-mode dust asphericity on dust opt…
dmleung Oct 27, 2025
b7ed255
dmleung added history variables for more PM diagnostics. 26 Oct 2025
dmleung Oct 27, 2025
2a8b481
dmleung edited the mass fractions of the emitted dust size distributi…
dmleung Oct 27, 2025
e4a7339
dmleung changed the fine dust mass fraction, edited aerosol optics, a…
dmleung Oct 29, 2025
2656965
dmleung used ntot_amode to represent the coarse mode for each MAM ver…
dmleung Oct 29, 2025
aa62ff1
dmleung did more code commenting and code cleanup.
dmleung Oct 30, 2025
d2e3c0c
use n_coarse_dust to indicate the coarse dust mode; also fix a mistak…
dmleung Oct 30, 2025
0ad2cf8
more robust way to determine coarse mode number; misc clean up
fvitt Oct 30, 2025
1e42db0
more code clean up and commenting by dmleung
dmleung Nov 4, 2025
9482f25
dmleung edited dust_emis_fact for CAM6 and CAM7 in namelist_defaults
dmleung Nov 6, 2025
3d4b7c8
dmleung add one more change in namelist_defaults for dust_emis_fact
dmleung Nov 6, 2025
28ce8aa
Merge tag 'cam6_4_128' into cam_dustemis_dev
dmleung Nov 6, 2025
6da0f6e
Merge branch 'cam_development' into cam_dustemis_dev
dmleung Nov 6, 2025
84ce973
debugged the aerosol optics so that total AOD and aerosol radiative e…
dmleung Nov 11, 2025
046ef5d
Merge branch 'cam_dustemis_dev' of https://github.com/dmleung/CAM int…
dmleung Nov 11, 2025
32391f6
code cleanup for the aerosol optics module
dmleung Nov 11, 2025
348d54f
Merge remote-tracking branch 'leung/cam_dustemis_dev' into cam_leung_…
cacraigucar Nov 19, 2025
2abc921
Increase time limit for GPU tests
cacraigucar Nov 19, 2025
726b221
fix threading issue
fvitt Dec 18, 2025
78e8bdc
update to tag cam6_4_136
fvitt Dec 19, 2025
87077a3
Merge remote-tracking branch 'danny/cam_dustemis_dev' into cam_leung_…
cacraigucar Dec 22, 2025
8dad6f8
Merge tag 'cam6_4_137' into cam_leung_2023
cacraigucar Dec 22, 2025
5b6319d
ChangeLog for cam6_4_138
cacraigucar Dec 22, 2025
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86 changes: 44 additions & 42 deletions bld/namelist_files/namelist_defaults_cam.xml
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Expand Up @@ -2489,55 +2489,57 @@
<molec_diff_bot_press> 50.D0 </molec_diff_bot_press>

<!-- dust emission tuning factor -->
<!-- NOTE: by default cam7 uses dust_emis_method=Leung_2023, otherwise dust_emis_method = Zender_2003 -->
<!-- if, e.g., one uses cam6 but selects Leung_2023, dust_emis_fact will need to be rechanged -->
<dust_emis_fact >0.37D0</dust_emis_fact>
<dust_emis_fact phys="cam5" >0.35D0</dust_emis_fact>
<dust_emis_fact hgrid="0.47x0.63" phys="cam5" >0.45D0</dust_emis_fact>
<dust_emis_fact hgrid="0.23x0.31" phys="cam5" >0.45D0</dust_emis_fact>
<dust_emis_fact phys="cam6" >0.35D0</dust_emis_fact>
<dust_emis_fact phys="cam7" >2.30D0</dust_emis_fact>
<dust_emis_fact phys="cam6" silhs="1" >0.30D0</dust_emis_fact>
<dust_emis_fact phys="cam7" silhs="1" >2.30D0</dust_emis_fact>
<dust_emis_fact hgrid="0.47x0.63" phys="cam6" >0.45D0</dust_emis_fact>
<dust_emis_fact hgrid="0.47x0.63" phys="cam7" >2.30D0</dust_emis_fact>
<dust_emis_fact hgrid="0.23x0.31" phys="cam6" >0.45D0</dust_emis_fact>
<dust_emis_fact hgrid="0.23x0.31" phys="cam7" >2.30D0</dust_emis_fact>
<dust_emis_fact phys="cam6" >0.88D0</dust_emis_fact>
<dust_emis_fact phys="cam7" >4.00D0</dust_emis_fact>
<dust_emis_fact phys="cam6" silhs="1" >0.75D0</dust_emis_fact>
<dust_emis_fact phys="cam7" silhs="1" >4.00D0</dust_emis_fact>
<dust_emis_fact hgrid="0.47x0.63" phys="cam6" >1.13D0</dust_emis_fact>
<dust_emis_fact hgrid="0.47x0.63" phys="cam7" >4.00D0</dust_emis_fact>
<dust_emis_fact hgrid="0.23x0.31" phys="cam6" >1.13D0</dust_emis_fact>
<dust_emis_fact hgrid="0.23x0.31" phys="cam7" >4.00D0</dust_emis_fact>

<dust_emis_fact dyn="se" phys="cam5" >0.55D0</dust_emis_fact>
<dust_emis_fact dyn="fv" phys="cam5" clubb_sgs="1" >0.22D0</dust_emis_fact>
<dust_emis_fact dyn="se" phys="cam6" >0.70D0</dust_emis_fact>
<dust_emis_fact dyn="se" phys="cam7" >2.30D0</dust_emis_fact>
<dust_emis_fact dyn="mpas" phys="cam7" >2.30D0</dust_emis_fact>
<dust_emis_fact dyn="se" hgrid="ne30np4" phys="cam6" chem="trop_strat_mam4_vbs">0.8D0</dust_emis_fact>
<dust_emis_fact dyn="se" hgrid="ne30np4" phys="cam7" chem="trop_strat_mam4_vbs">2.30D0</dust_emis_fact>
<dust_emis_fact dyn="se" hgrid="ne0np4CONUS.ne30x8" phys="cam6" chem="trop_strat_mam4_vbs">0.8D0</dust_emis_fact>
<dust_emis_fact dyn="se" hgrid="ne0np4CONUS.ne30x8" phys="cam7" chem="trop_strat_mam4_vbs">2.30D0</dust_emis_fact>
<dust_emis_fact dyn="se" hgrid="ne30np4" phys="cam6" chem="trop_strat_mam4_ts1">0.8D0</dust_emis_fact>
<dust_emis_fact dyn="se" hgrid="ne30np4" phys="cam7" chem="trop_strat_mam4_ts1">2.30D0</dust_emis_fact>
<dust_emis_fact dyn="se" hgrid="ne0np4CONUS.ne30x8" phys="cam6" chem="trop_strat_mam4_tst">0.8D0</dust_emis_fact>
<dust_emis_fact dyn="se" hgrid="ne0np4CONUS.ne30x8" phys="cam7" chem="trop_strat_mam4_tst">2.30D0</dust_emis_fact>
<dust_emis_fact dyn="se" hgrid="ne30np4" phys="cam6" chem="trop_strat_mam5_vbs">0.8D0</dust_emis_fact>
<dust_emis_fact dyn="se" hgrid="ne30np4" phys="cam7" chem="trop_strat_mam5_vbs">2.30D0</dust_emis_fact>
<dust_emis_fact dyn="se" hgrid="ne0np4CONUS.ne30x8" phys="cam6" chem="trop_strat_mam5_vbs">0.8D0</dust_emis_fact>
<dust_emis_fact dyn="se" hgrid="ne0np4CONUS.ne30x8" phys="cam7" chem="trop_strat_mam5_vbs">2.30D0</dust_emis_fact>
<dust_emis_fact dyn="se" hgrid="ne30np4" phys="cam6" chem="trop_strat_mam5_ts1">0.8D0</dust_emis_fact>
<dust_emis_fact dyn="se" hgrid="ne30np4" phys="cam7" chem="trop_strat_mam5_ts1">2.30D0</dust_emis_fact>
<dust_emis_fact dyn="se" hgrid="ne0np4CONUS.ne30x8" phys="cam6" chem="trop_strat_mam5_tst">0.8D0</dust_emis_fact>
<dust_emis_fact dyn="se" hgrid="ne0np4CONUS.ne30x8" phys="cam7" chem="trop_strat_mam5_tst">2.30D0</dust_emis_fact>
<dust_emis_fact dyn="se" hgrid="ne30np4" phys="cam6" waccm_phys="1">0.8D0</dust_emis_fact>
<dust_emis_fact dyn="se" hgrid="ne30np4" phys="cam7" waccm_phys="1">2.30D0</dust_emis_fact>
<dust_emis_fact dyn="se" hgrid="ne0np4CONUS.ne30x8" phys="cam6" waccm_phys="1">0.8D0</dust_emis_fact>
<dust_emis_fact dyn="se" hgrid="ne0np4CONUS.ne30x8" phys="cam7" waccm_phys="1">2.30D0</dust_emis_fact>
<dust_emis_fact dyn="fv" phys="cam6" >0.70D0</dust_emis_fact>
<dust_emis_fact dyn="fv" phys="cam7" >2.300D0</dust_emis_fact>

<dust_emis_fact hgrid="1.9x2.5" phys="cam6" ver="chem">0.26D0</dust_emis_fact>
<dust_emis_fact hgrid="1.9x2.5" phys="cam7" ver="chem">2.30D0</dust_emis_fact>
<dust_emis_fact hgrid="0.9x1.25" phys="cam6" ver="chem">0.7D0</dust_emis_fact>
<dust_emis_fact hgrid="0.9x1.25" phys="cam7" ver="chem">2.30D0</dust_emis_fact>
<dust_emis_fact hgrid="1.9x2.5" offline_dyn="1" phys="cam6" ver="chem">0.24D0</dust_emis_fact>
<dust_emis_fact hgrid="1.9x2.5" offline_dyn="1" phys="cam7" ver="chem">2.30D0</dust_emis_fact>
<dust_emis_fact hgrid="0.47x0.63" offline_dyn="1" phys="cam6" ver="chem">0.9D0</dust_emis_fact>
<dust_emis_fact hgrid="0.47x0.63" offline_dyn="1" phys="cam7" ver="chem">2.30D0</dust_emis_fact>
<dust_emis_fact dyn="se" phys="cam6" >1.75D0</dust_emis_fact>
<dust_emis_fact dyn="se" phys="cam7" >4.00D0</dust_emis_fact>
<dust_emis_fact dyn="mpas" phys="cam7" >4.00D0</dust_emis_fact>
<dust_emis_fact dyn="se" hgrid="ne30np4" phys="cam6" chem="trop_strat_mam4_vbs">2.0D0</dust_emis_fact>
<dust_emis_fact dyn="se" hgrid="ne30np4" phys="cam7" chem="trop_strat_mam4_vbs">4.0D0</dust_emis_fact>
<dust_emis_fact dyn="se" hgrid="ne0np4CONUS.ne30x8" phys="cam6" chem="trop_strat_mam4_vbs">2.0D0</dust_emis_fact>
<dust_emis_fact dyn="se" hgrid="ne0np4CONUS.ne30x8" phys="cam7" chem="trop_strat_mam4_vbs">4.0D0</dust_emis_fact>
<dust_emis_fact dyn="se" hgrid="ne30np4" phys="cam6" chem="trop_strat_mam4_ts1">2.0D0</dust_emis_fact>
<dust_emis_fact dyn="se" hgrid="ne30np4" phys="cam7" chem="trop_strat_mam4_ts1">4.0D0</dust_emis_fact>
<dust_emis_fact dyn="se" hgrid="ne0np4CONUS.ne30x8" phys="cam6" chem="trop_strat_mam4_tst">2.0D0</dust_emis_fact>
<dust_emis_fact dyn="se" hgrid="ne0np4CONUS.ne30x8" phys="cam7" chem="trop_strat_mam4_tst">4.0D0</dust_emis_fact>
<dust_emis_fact dyn="se" hgrid="ne30np4" phys="cam6" chem="trop_strat_mam5_vbs">2.0D0</dust_emis_fact>
<dust_emis_fact dyn="se" hgrid="ne30np4" phys="cam7" chem="trop_strat_mam5_vbs">4.0D0</dust_emis_fact>
<dust_emis_fact dyn="se" hgrid="ne0np4CONUS.ne30x8" phys="cam6" chem="trop_strat_mam5_vbs">2.0D0</dust_emis_fact>
<dust_emis_fact dyn="se" hgrid="ne0np4CONUS.ne30x8" phys="cam7" chem="trop_strat_mam5_vbs">4.0D0</dust_emis_fact>
<dust_emis_fact dyn="se" hgrid="ne30np4" phys="cam6" chem="trop_strat_mam5_ts1">2.0D0</dust_emis_fact>
<dust_emis_fact dyn="se" hgrid="ne30np4" phys="cam7" chem="trop_strat_mam5_ts1">4.0D0</dust_emis_fact>
<dust_emis_fact dyn="se" hgrid="ne0np4CONUS.ne30x8" phys="cam6" chem="trop_strat_mam5_tst">2.0D0</dust_emis_fact>
<dust_emis_fact dyn="se" hgrid="ne0np4CONUS.ne30x8" phys="cam7" chem="trop_strat_mam5_tst">4.0D0</dust_emis_fact>
<dust_emis_fact dyn="se" hgrid="ne30np4" phys="cam6" waccm_phys="1">2.0D0</dust_emis_fact>
<dust_emis_fact dyn="se" hgrid="ne30np4" phys="cam7" waccm_phys="1">4.0D0</dust_emis_fact>
<dust_emis_fact dyn="se" hgrid="ne0np4CONUS.ne30x8" phys="cam6" waccm_phys="1">2.0D0</dust_emis_fact>
<dust_emis_fact dyn="se" hgrid="ne0np4CONUS.ne30x8" phys="cam7" waccm_phys="1">4.0D0</dust_emis_fact>
<dust_emis_fact dyn="fv" phys="cam6" >1.75D0</dust_emis_fact>
<dust_emis_fact dyn="fv" phys="cam7" >4.0D0</dust_emis_fact>

<dust_emis_fact hgrid="1.9x2.5" phys="cam6" ver="chem">0.65D0</dust_emis_fact>
<dust_emis_fact hgrid="1.9x2.5" phys="cam7" ver="chem">4.0D0</dust_emis_fact>
<dust_emis_fact hgrid="0.9x1.25" phys="cam6" ver="chem">1.75D0</dust_emis_fact>
<dust_emis_fact hgrid="0.9x1.25" phys="cam7" ver="chem">4.0D0</dust_emis_fact>
<dust_emis_fact hgrid="1.9x2.5" offline_dyn="1" phys="cam6" ver="chem">0.6D0</dust_emis_fact>
<dust_emis_fact hgrid="1.9x2.5" offline_dyn="1" phys="cam7" ver="chem">4.0D0</dust_emis_fact>
<dust_emis_fact hgrid="0.47x0.63" offline_dyn="1" phys="cam6" ver="chem">2.25D0</dust_emis_fact>
<dust_emis_fact hgrid="0.47x0.63" offline_dyn="1" phys="cam7" ver="chem">4.0D0</dust_emis_fact>

<!-- dust emissions method -->
<dust_emis_method> Zender_2003</dust_emis_method>
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4 changes: 2 additions & 2 deletions cime_config/testdefs/testlist_cam.xml
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Expand Up @@ -84,7 +84,7 @@
</machines>
<options>
<option name="comment">CAM7-LT, enable gpu for PUMAS, CLUBB, and RRTMGP</option>
<option name="wallclock">00:45:00</option>
<option name="wallclock">02:00:00</option>
</options>
</test>

Expand Down Expand Up @@ -1276,7 +1276,7 @@
<machine name="derecho" compiler="nvhpc" category="prealpha"/>
</machines>
<options>
<option name="wallclock">00:30:00</option>
<option name="wallclock">02:00:00</option>
</options>
</test>
<test compset="F2000dev" grid="ne30pg3_ne30pg3_mg17" name="ERP_D_Ln9" testmods="cam/outfrq9s" supported="false">
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140 changes: 140 additions & 0 deletions doc/ChangeLog
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@@ -1,3 +1,143 @@

===============================================================

Tag name: cam6_4_138
Originator(s): dmleung, fvitt, cacraigucar
Date: Dec 22, 2025
One-line Summary: Leung_2023 dust cycle updates
Github PR URL: https://github.com/ESCOMP/CAM/pull/1438

Purpose of changes (include the issue number and title text for each relevant GitHub issue):
- Tuning Leung_2023 dust cycle for clm6_0_cam7.0 and namelist changes: https://github.com/ESCOMP/CAM/pull/1426
- Tuning Leung_2023 dust cycle for clm6_0_cam7.0: https://github.com/ESCOMP/CAM/issues/1423
- Bump up time limit for GPU tests

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: fvitt, adamrher, jimmielin

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/namelist_files/namelist_defaults_cam.xml
- update namelist settings

M cime_config/testdefs/testlist_cam.xml
- bump up time limit on GPU tests (still does not complete)

M src/chemistry/modal_aero/aero_model.F90
M src/chemistry/modal_aero/dust_model.F90
M src/chemistry/utils/modal_aero_wateruptake.F90
M src/physics/cam/aerosol_optics_cam.F90
- dust updates

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.

All tests had namelist changes as well

derecho/intel/aux_cam:
ERC_D_Ln9.f09_f09_mt232.FHIST_BDRD.derecho_intel.cam-outfrq9s (Overall: DIFF) details:
ERC_D_Ln9.f19_f19_mt232.QPC6.derecho_intel.cam-outfrq3s_cosp (Overall: DIFF) details:
ERC_D_Ln9.mpasa120_mpasa120.F2000climo.derecho_intel.cam-outfrq9s_mpasa120 (Overall: DIFF) details:
ERC_D_Ln9.mpasa120_mpasa120.FHISTC_LTso.derecho_intel.cam-outfrq9s_mpasa120 (Overall: DIFF) details:
ERC_D_Ln9.ne30pg3_ne30pg3_mt232.F1850C_LTso.derecho_intel.cam-outfrq9s (Overall: DIFF) details:
ERC_Ln9.C96_C96_mt232.F2000climo.derecho_intel.cam-outfrq9s (Overall: DIFF) details:
ERI_D_Ln18.f09_f09_mt232.FHIST.derecho_intel.cam-outfrq3s_eri (Overall: DIFF) details:
ERI_D_Ln18.f19_f19_mt232.FHIST_C5.derecho_intel.cam-outfrq3s_eri (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_D_Ln9_P64x2.f09_f09_mg17.QSC6.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.f09_f09_mg17.FCSD_HCO.derecho_intel.cam-outfrq9s (Overall: DIFF) details:
ERP_Ln9.f19_f19_mg17.FWsc1850.derecho_intel.cam-outfrq9s (Overall: DIFF) details:
ERP_Ln9.ne30pg3_ne30pg3_mg17.FCnudged.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.f19_f19_mg17.FXSD.derecho_intel.cam-outfrq9s (Overall: DIFF) details:
ERS_Ln9.ne30pg3_ne30pg3_mg17.FHISTC_WXma.derecho_intel.cam-outfrq9s_ctem (Overall: DIFF) details:
SCT_D_Ln7.ne3_ne3_mg37.QPC5.derecho_intel.cam-scm_prep (Overall: DIFF) details:
SMS_C2_D_Ln9.ne16pg3_ne16pg3_mg17.FHISTC_WXma.derecho_intel.cam-outfrq9s (Overall: DIFF) details:
SMS_D_Ld5.f09_f09_mt232.PC6.derecho_intel.cam-cam6_port_f09 (Overall: DIFF) details:
SMS_D_Ln9.f09_f09_mg17.FCts2nudged.derecho_intel.cam-outfrq9s_leapday (Overall: DIFF) details:
SMS_D_Ln9.f09_f09_mg17.FCvbsxHIST.derecho_intel.cam-outfrq9s (Overall: DIFF) details:
SMS_D_Ln9.f09_f09_mg17.FSD.derecho_intel.cam-outfrq9s (Overall: DIFF) details:
SMS_D_Ln9.f19_f19_mg17.FWma2000climo.derecho_intel.cam-outfrq9s (Overall: DIFF) details:
SMS_D_Ln9.f19_f19_mg17.FWma2000climo.derecho_intel.cam-outfrq9s_waccm_ma_mam4 (Overall: DIFF) details:
SMS_D_Ln9.f19_f19_mg17.QPC2000climo.derecho_intel.cam-outfrq3s_usecase (Overall: DIFF) details:
SMS_D_Ln9.f19_f19_mt232.FHIST_C5.derecho_intel.cam-mam7 (Overall: DIFF) details:
SMS_D_Ln9.ne0ARCTICne30x4_ne0ARCTICne30x4_mt12.FHIST.derecho_intel.cam-outfrq9s (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.FCHIST_GC.derecho_intel.cam-outfrq1d (Overall: DIFF) details:
SMS_Ld1.f09_f09_mg17.FW2000climo.derecho_intel.cam-outfrq1d (Overall: DIFF) details:
SMS_Ld1.ne30pg3_ne30pg3_mg17.FC2010climo.derecho_intel.cam-outfrq1d (Overall: DIFF) details:
SMS_Lh12.f09_f09_mg17.FCSD_HCO.derecho_intel.cam-outfrq3h (Overall: DIFF) details:
SMS_Ln9.f09_f09_mg17.F2010climo.derecho_intel.cam-nudging (Overall: DIFF) details:
SMS_Ln9.f09_f09_mg17.FW1850.derecho_intel.cam-reduced_hist3s (Overall: DIFF) details:
SMS_Ln9.f19_f19_mt232.F2000climo.derecho_intel.cam-silhs (Overall: DIFF) details:
SMS_Ln9.ne30pg3_ne30pg3_mg17.FW2000climo.derecho_intel.cam-outfrq9s_rrtmgp (Overall: DIFF) details:
- answer changing due to dust

SMS_D_Ln9_P1536x1.ne0CONUSne30x8_ne0CONUSne30x8_mt12.FCHIST.derecho_intel.cam-outfrq9s (Overall: DIFF) details:
- intermittent failure in CTSM code (lnd_set_decomp_and_domain.F90)
- This test passed on the first try during this run.

derecho/nvhpc/aux_cam:
FAIL ERS_Ln9.ne30pg3_ne30pg3_mt232.FHISTC_LTso.derecho_nvhpc.cam-outfrq9s_gpu_default
-pre-existing failure -- exceeds wallclock time limit
NOTE: Jian has determined this is due to changes on derecho with the the last upgrade.
He has reported the issue to CISL. Note cam6_4_128 is the last CAM tag with
baselines to use for comparison but answer changes are expected starting with
cam6_4_130.

izumi/nag/aux_cam:
ERC_D_Ln9.f10_f10_mg37.QPWmaC6.izumi_nag.cam-outfrq3s (Overall: DIFF) details:
ERC_D_Ln9.f10_f10_mt232.FHIST_C5.izumi_nag.cam-outfrq3s_subcol (Overall: DIFF) details:
ERC_D_Ln9.f10_f10_mt232.FHIST.izumi_nag.cam-outfrq3s_cospsathist (Overall: DIFF) details:
ERC_D_Ln9.ne3pg3_ne3pg3_mt232.FHISTC_LTso.izumi_nag.cam-cosp_rad_diags (Overall: DIFF) details:
SMS_D_Ln9.f10_f10_mt232.F1850.izumi_nag.cam-outfrq9s (Overall: DIFF) details:
TMC_D_Ln9.f10_f10_mt232.FHIST_C5.izumi_nag.cam-mc_ttrac (Overall: DIFF) details:
- answer changing due to dust

izumi/gnu/aux_cam:
ERC_D_Ln9.C48_C48_mg17.QPC6.izumi_gnu.cam-outfrq9s (Overall: DIFF) details:
ERC_D_Ln9.f19_f19_mt232.FHIST.izumi_gnu.cam-lonlat_fv_diags (Overall: DIFF) details:
ERC_D_Ln9.mpasa480_mpasa480_mt232.FHISTC_LTso.izumi_gnu.cam-outfrq9s_mpasa480 (Overall: DIFF) details:
ERC_D_Ln9.ne3pg3_ne3pg3_mt232.FHIST_C5.izumi_gnu.cam-carma_cosp_rad_diag_mam (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.QPC5.izumi_gnu.cam-outfrq9s (Overall: DIFF) details:
ERP_Ln9_P24x2.f45_f45_mg37.QPWmaC6.izumi_gnu.cam-outfrq9s_mee_fluxes (Overall: DIFF) details:
ERS_Ln9_P24x1.mpasa480_mpasa480.F2000climo.izumi_gnu.cam-outfrq9s_mpasa480 (Overall: DIFF) details:
PLB_D_Ln9.f10_f10_mt232.FHIST_C5.izumi_gnu.cam-ttrac_loadbal0 (Overall: DIFF) details:
PLB_D_Ln9.f10_f10_mt232.FHIST_C5.izumi_gnu.cam-ttrac_loadbal1 (Overall: DIFF) details:
PLB_D_Ln9.f10_f10_mt232.FHIST_C5.izumi_gnu.cam-ttrac_loadbal3 (Overall: DIFF) details:
SCT_D_Ln7.ne3_ne3_mg37.QPC6.izumi_gnu.cam-scm_prep_c6 (Overall: DIFF) details:
SMS_D_Ln3.ne3pg3_ne3pg3_mt232.PC7.izumi_gnu.cam-pc7_ne3pg3 (Overall: DIFF) details:
SUB_D_Ln9.ne3pg3_ne3pg3_mt232.FHIST.izumi_gnu.cam-outfrq9s (Overall: DIFF) details:
- answer changing due to dust

Summarize any changes to answers, i.e.,
- what code configurations: all which use dust
- what platforms/compilers: all
- nature of change (roundoff; larger than roundoff but same climate; new
climate):

Changes were validated in https://github.com/ESCOMP/CAM/pull/1426

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Tag name: cam6_4_137
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