diff --git a/doc/ChangeLog b/doc/ChangeLog
index a7873f415f..1c1c83f5a2 100644
--- a/doc/ChangeLog
+++ b/doc/ChangeLog
@@ -1,6 +1,65 @@
 
 ===============================================================
 
+Tag name: cam6_3_079
+Originator(s): jedwards, cacraig
+Date: Oct 14, 2022
+One-line Summary: variable resolution has irreproducible results (intermittent failure)
+Github PR URL: https://github.com/ESCOMP/CAM/pull/666
+
+Purpose of changes (include the issue number and title text for each relevant GitHub issue):
+ - irreproducable results in variable resolution: https://github.com/ESCOMP/CAM/issues/631
+ - during testing investigations, a problem with nextsw_cday was discovered and is corrected
+
+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, courtneyp, 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       Externals.cfg
+           - update PIO and ccs_config externals to bring in fix for intermittent failure
+
+M       cime_config/testdefs/testlist_cam.xml
+           - Remove MCT WACCM tests which were have intermittent problems as MCT is being phased out
+	   - Increase time for C96 F2000climo test
+
+M       src/physics/camrt/radiation.F90
+M       src/physics/rrtmg/radiation.F90
+           - nextsw_cday is a protected variable, but was being modified by an external routine.  Fixed
+
+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.
+
+cheyenne/intel/aux_cam: all BFB except:
+    FAIL ERP_Ln9_Vnuopc.ne30_ne30_mg17.FCnudged.cheyenne_intel.cam-outfrq9s BASELINE /glade/p/cesm/amwg/cesm_baselines/cam6_3_078: DIFF
+    FAIL ERS_Ln9_P288x1_Vnuopc.mpasa120_mpasa120.F2000climo.cheyenne_intel.cam-outfrq9s_mpasa120 BASELINE /glade/p/cesm/amwg/cesm_baselines/cam6_3_078: DIFF
+    FAIL ERS_Ln9_P36x1_Vnuopc.mpasa480_mpasa480.F2000climo.cheyenne_intel.cam-outfrq9s_mpasa480 BASELINE /glade/p/cesm/amwg/cesm_baselines/cam6_3_078: DIFF
+    FAIL SMS_D_Ln9_Vnuopc.ne0CONUSne30x8_ne0CONUSne30x8_mt12.FCHIST.cheyenne_intel.cam-outfrq9s_refined_camchem BASELINE /glade/p/cesm/amwg/cesm_baselines/cam6_3_078: DIFF
+    FAIL SMS_D_Ln9_Vnuopc.ne16_ne16_mg17.FX2000.cheyenne_intel.cam-outfrq9s BASELINE /glade/p/cesm/amwg/cesm_baselines/cam6_3_078: DIFF
+      - Differences are due to ESMF update and were confirmed as discussed in issue ESCOMP/CAM #631
+
+izumi/nag/aux_cam: all BFB except:
+  DAE_Vnuopc.f45_f45_mg37.FHS94.izumi_nag.cam-dae (Overall: FAIL) details:
+      FAIL DAE_Vnuopc.f45_f45_mg37.FHS94.izumi_nag.cam-dae RUN time=11
+         - expected failure
+
+izumi/gnu/aux_cam: all BFB
+
+===============================================================
+===============================================================
+
 Tag name:cam6_3_078
 Originator(s): stepheba, cacraig
 Date: Sept 28, 2022