From df73e63d5ca1a58acf5ecbdb90eead4265a8bd86 Mon Sep 17 00:00:00 2001
From: Haipeng Lin <hplin@ucar.edu>
Date: Mon, 22 Jun 2026 11:10:45 -0400
Subject: [PATCH] Complete CCPPization of CAM7 hb_free_atm: add regression test

---
 cime_config/testdefs/testlist_cam.xml               |  9 +++++++++
 .../outfrq_hb_freeatm_vdiff_derecho/shell_commands  |  1 +
 .../cam/outfrq_hb_freeatm_vdiff_derecho/user_nl_cam | 13 +++++++++++++
 3 files changed, 23 insertions(+)
 create mode 100644 cime_config/testdefs/testmods_dirs/cam/outfrq_hb_freeatm_vdiff_derecho/shell_commands
 create mode 100644 cime_config/testdefs/testmods_dirs/cam/outfrq_hb_freeatm_vdiff_derecho/user_nl_cam

diff --git a/cime_config/testdefs/testlist_cam.xml b/cime_config/testdefs/testlist_cam.xml
index 4681270a..c7fc25e4 100644
--- a/cime_config/testdefs/testlist_cam.xml
+++ b/cime_config/testdefs/testlist_cam.xml
@@ -88,6 +88,15 @@
       <option name="comment">Test for Holtslag-Boville boundary layer scheme and vertical diffusion</option>
     </options>
   </test>
+  <test compset="FPHYStest" grid="ne3pg3_ne3pg3_mg37" name="SMS_Ln2" testmods="cam/outfrq_hb_freeatm_vdiff_derecho">
+    <machines>
+      <machine name="derecho" compiler="gnu" category="aux_sima"/>
+    </machines>
+    <options>
+      <option name="wallclock">00:10:00</option>
+      <option name="comment">Test for Holtslag-Boville boundary layer scheme for free atm above CLUBB and vertical diffusion</option>
+    </options>
+  </test>
   <test compset="FPHYStest" grid="ne3pg3_ne3pg3_mg37" name="SMS_Ln2" testmods="cam/outfrq_uw_vdiff_derecho">
     <machines>
       <machine name="derecho" compiler="gnu" category="aux_sima"/>
diff --git a/cime_config/testdefs/testmods_dirs/cam/outfrq_hb_freeatm_vdiff_derecho/shell_commands b/cime_config/testdefs/testmods_dirs/cam/outfrq_hb_freeatm_vdiff_derecho/shell_commands
new file mode 100644
index 00000000..bce18137
--- /dev/null
+++ b/cime_config/testdefs/testmods_dirs/cam/outfrq_hb_freeatm_vdiff_derecho/shell_commands
@@ -0,0 +1 @@
+ ./xmlchange CAM_CONFIG_OPTS="--dyn none --physics-suites vdiff_holtslag_boville_free_atm"
diff --git a/cime_config/testdefs/testmods_dirs/cam/outfrq_hb_freeatm_vdiff_derecho/user_nl_cam b/cime_config/testdefs/testmods_dirs/cam/outfrq_hb_freeatm_vdiff_derecho/user_nl_cam
new file mode 100644
index 00000000..fae674e6
--- /dev/null
+++ b/cime_config/testdefs/testmods_dirs/cam/outfrq_hb_freeatm_vdiff_derecho/user_nl_cam
@@ -0,0 +1,13 @@
+! CAM7 FHISTC_LTso snapshot:
+ncdata = '/glade/campaign/cesm/community/amwg/sima_baselines/cam_sima_test_snapshots/cam_ne3pg3_fhistc_ltso_vertical_diffusion_hb_free_atm_snapshot_derecho_gnu_before_c20260604.nc'
+ncdata_check = '/glade/campaign/cesm/community/amwg/sima_baselines/cam_sima_test_snapshots/cam_ne3pg3_fhistc_ltso_vertical_diffusion_hb_free_atm_snapshot_derecho_gnu_after_c20260604.nc'
+pver = 58
+
+do_iss = .true.
+
+hist_output_frequency;h1: 1*nsteps
+hist_max_frames;h1: 1
+hist_add_inst_fields;h1:QT,SL,SLV,SLFLX,QTFLX,UFLX,VFLX
+hist_add_inst_fields;h1:DTV,DUV,DVV,DTVKE
+hist_precision;h1: REAL64
+