Add ChangeLog entry, including Derecho test results.

doc/ChangeLog

@@ -1,5 +1,72 @@
 ===============================================================
 
+Tag name: cam6_4_070
+Originator(s): patcal, nusbaume
+Date: 22 February 2025
+One-line Summary: Pertlim fix for MPAS
+Github PR URL: https://github.com/ESCOMP/CAM/pull/1114
+
+Purpose of changes (include the issue number and title text for each relevant GitHub issue):
+
+Closes #1109 - MPAS-A Pertlim usage is only implemented for ideal initial states
+
+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: jtruesdal
+
+List all files eliminated: N/A
+
+List all files added and what they do:
+
+A       cime_config/testdefs/testmods_dirs/cam/outfrq9s_mpasa480_pertlim/shell_commands
+A       cime_config/testdefs/testmods_dirs/cam/outfrq9s_mpasa480_pertlim/user_nl_cam
+A       cime_config/testdefs/testmods_dirs/cam/outfrq9s_mpasa480_pertlim/user_nl_clm
+ - Add new MPAS pertlim regression test files.
+
+List all existing files that have been modified, and describe the changes:
+
+M       src/dynamics/mpas/dyn_comp.F90
+ - Allow initial state perturbations when reading from the ncdata file.
+
+M       cime_config/testdefs/testlist_cam.xml
+ - Add new MPAS pertlim regression test files.
+
+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:
+
+ERP_Ln9.f09_f09_mg17.FCSD_HCO.derecho_intel.cam-outfrq9s (Overall: FAIL)
+SMS_Ld1.f09_f09_mg17.FCHIST_GC.derecho_intel.cam-outfrq1d (Overall: DIFF)
+ - pre-existing failures due to HEMCO not having reproducible results (issues #1018 and #856)
+
+ERS_D_Ln9.mpasa480_mpasa480.F2000climo.derecho_intel.cam-outfrq9s_mpasa480_pertlim (Overall: DIFF)
+ - New test (so no baselines yet)
+
+SMS_D_Ln9.f19_f19_mg17.FXHIST.derecho_intel.cam-outfrq9s_amie (Overall: FAIL)
+SMS_D_Ln9_P1280x1.ne0CONUSne30x8_ne0CONUSne30x8_mt12.FCHIST.derecho_intel.cam-outfrq9s (Overall: FAIL)
+ - pre-existing failures due to build-namelist error requiring CLM/CTSM external update
+
+derecho/nvhpc/aux_cam: ALL PASS
+
+izumi/nag/aux_cam:
+
+CAM tag used for the baseline comparison tests if different than previous
+tag:
+
+Summarize any changes to answers:
+
+===============================================================
+===============================================================
+
 Tag name: cam6_4_069
 Originator(s): peverwhee
 Date: 20 February 2025
@@ -29,7 +96,7 @@ List all files added and what they do: none
 List all existing files that have been modified, and describe the changes:
 
 .github/workflows/fleximod_test.yaml
- - update fleximod workflow to include check that the checked out externals 
+ - update fleximod workflow to include check that the checked out externals
    match what is expected
 
 .gitmodules
@@ -218,7 +285,7 @@ cime_config/config_compsets.xml
   all FSCAM* compsets
 . remove FDABIP04 (_CAM%DABIP04_)
 . In the future new tests will be added for FSCAM* compsets using SE
-  dycore. 
+  dycore.
 
 cime_config/config_component.xml
 . remove eul as valid value for CAM_DYCORE
@@ -338,7 +405,7 @@ Resolve #1171 - Remove SP-CAM from cam_development
 Describe any changes made to build system:
 . remove spcam build options
 
-Describe any changes made to the namelist: 
+Describe any changes made to the namelist:
 . remove spcam namelist options
 
 List any changes to the defaults for the boundary datasets: none