diff --git a/cime_config/testdefs/testlist_cam.xml b/cime_config/testdefs/testlist_cam.xml
index 4681270a..881be0ea 100644
--- a/cime_config/testdefs/testlist_cam.xml
+++ b/cime_config/testdefs/testlist_cam.xml
@@ -61,6 +61,15 @@
       <option name="comment">Test for Hack shallow convection scheme</option>
     </options>
   </test>
+  <test compset="FPHYStest" grid="ne3pg3_ne3pg3_mg37" name="SMS_Ln2" testmods="cam/outfrq_uw_shallow_derecho">
+    <machines>
+      <machine name="derecho" compiler="gnu" category="aux_sima"/>
+    </machines>
+    <options>
+      <option name="wallclock">00:10:00</option>
+      <option name="comment">Test for UW shallow convection scheme</option>
+    </options>
+  </test>
   <test compset="FPHYStest" grid="ne3pg3_ne3pg3_mg37" name="SMS_Ln2" testmods="cam/outfrq_dme_adjust_derecho">
     <machines>
       <machine name="derecho" compiler="gnu" category="aux_sima"/>
diff --git a/cime_config/testdefs/testmods_dirs/cam/outfrq_uw_shallow_derecho/shell_commands b/cime_config/testdefs/testmods_dirs/cam/outfrq_uw_shallow_derecho/shell_commands
new file mode 100644
index 00000000..c49b49a8
--- /dev/null
+++ b/cime_config/testdefs/testmods_dirs/cam/outfrq_uw_shallow_derecho/shell_commands
@@ -0,0 +1 @@
+ ./xmlchange CAM_CONFIG_OPTS="--dyn none --physics-suites convect_shallow_uw"
diff --git a/cime_config/testdefs/testmods_dirs/cam/outfrq_uw_shallow_derecho/user_nl_cam b/cime_config/testdefs/testmods_dirs/cam/outfrq_uw_shallow_derecho/user_nl_cam
new file mode 100644
index 00000000..58ba6455
--- /dev/null
+++ b/cime_config/testdefs/testmods_dirs/cam/outfrq_uw_shallow_derecho/user_nl_cam
@@ -0,0 +1,23 @@
+ncdata = '/glade/campaign/cesm/community/amwg/sima_baselines/cam_sima_test_snapshots/cam_ne3pg3_fhistc5_uw_convect_shallow_snapshot_derecho_gnu_before_c20260604.nc'
+ncdata_check = '/glade/campaign/cesm/community/amwg/sima_baselines/cam_sima_test_snapshots/cam_ne3pg3_fhistc5_uw_convect_shallow_snapshot_derecho_gnu_after_c20260604.nc'
+
+debug_output = 1
+
+! tolerances for testing
+ncdata_check_err = .true.
+min_difference = 2e-15
+
+! FHIST_C5 snapshot:
+pver = 30
+
+! snapshot is sourced from the SE dycore:
+uwshcu_rpen = 5.0
+
+! history fields for CAM5 shallow convection:
+hist_output_frequency;h1: 1*nsteps
+hist_max_frames;h1: 1
+hist_add_inst_fields;h1: CMFDT,CMFDQ,CMFDLIQ,CMFDICE,CMFDQR,DQP,ICWMRSH,CMFSL,CMFLQ,FREQSH,CMFMCSH,PRECSH
+hist_add_inst_fields;h1: UWFLXPRC,UWFLXSNW
+hist_add_inst_fields;h1: qtflx_Cu, slflx_Cu, uflx_Cu, vflx_Cu, qtten_Cu, slten_Cu, uten_Cu, vten_Cu, qvten_Cu, qlten_Cu, qiten_Cu, cbmf_Cu, ufrcinvbase_Cu, ufrclcl_Cu, winvbase_Cu, wlcl_Cu, plcl_Cu, pinv_Cu, plfc_Cu, pbup_Cu, ppen_Cu, qtsrc_Cu, thlsrc_Cu, thvlsrc_Cu, emfkbup_Cu, cin_Cu, cinlcl_Cu, cbmflimit_Cu, tkeavg_Cu, zinv_Cu, rcwp_Cu, rlwp_Cu, riwp_Cu, tophgt_Cu, wu_Cu, ufrc_Cu, qtu_Cu, thlu_Cu, thvu_Cu, uu_Cu, vu_Cu, qtu_emf_Cu, thlu_emf_Cu, uu_emf_Cu, vu_emf_Cu, umf_Cu, uemf_Cu, qcu_Cu, qlu_Cu, qiu_Cu, cufrc_Cu, fer_Cu, fdr_Cu, dwten_Cu, diten_Cu, qrten_Cu, qsten_Cu, flxrain_Cu, flxsnow_Cu, ntraprd_Cu, ntsnprd_Cu, excessu_Cu, excess0_Cu, xc_Cu, aquad_Cu, bquad_Cu, cquad_Cu, bogbot_Cu, bogtop_Cu, exit_UWCu_Cu, exit_conden_Cu, exit_klclpver_Cu, exit_klfcpver_Cu, exit_ufrc_Cu, exit_wtw_Cu, exit_drycore_Cu, exit_wu_Cu, exit_cufilter_Cu, exit_kinv1_Cu, exit_rei_Cu, limit_shcu_Cu, limit_negcon_Cu, limit_ufrc_Cu, limit_ppen_Cu, limit_emf_Cu, limit_cinlcl_Cu, limit_cin_Cu, limit_cbmf_Cu, limit_rei_Cu, ind_delcin_Cu
+hist_precision;h1: REAL64
+
diff --git a/src/data/registry.xml b/src/data/registry.xml
index fd9a8aa0..6a4d90d1 100644
--- a/src/data/registry.xml
+++ b/src/data/registry.xml
@@ -617,6 +617,20 @@
       <dimensions>horizontal_dimension vertical_layer_dimension</dimensions>
       <ic_file_input_names>CLDICE cnst_CLDICE</ic_file_input_names>
     </variable>
+    <variable local_name="numliq"
+              standard_name="mass_number_concentration_of_cloud_liquid_wrt_moist_air_and_condensed_water"
+              units="kg-1" type="real" constituent="true">
+      <long_name>Cloud liquid number with respect to moist air plus all airborne condensates</long_name>
+      <dimensions>horizontal_dimension vertical_layer_dimension</dimensions>
+      <ic_file_input_names>NUMLIQ cnst_NUMLIQ</ic_file_input_names>
+    </variable>
+    <variable local_name="numice"
+              standard_name="mass_number_concentration_of_ice_wrt_moist_air_and_condensed_water"
+              units="kg-1" type="real" constituent="true">
+      <long_name>Cloud ice number with respect to moist air plus all airborne condensates</long_name>
+      <dimensions>horizontal_dimension vertical_layer_dimension</dimensions>
+      <ic_file_input_names>NUMICE cnst_NUMICE</ic_file_input_names>
+    </variable>
     <variable local_name="rainqm"
               standard_name="rain_mixing_ratio_wrt_moist_air_and_condensed_water"
               units="kg kg-1" type="real" constituent="true">
@@ -1553,6 +1567,22 @@
       <!-- only used if use_shfrc is .true. -->
       <initial_value>0.0_kind_phys</initial_value>
     </variable>
+    <variable local_name="cush"
+              standard_name="shallow_convective_scale_height"
+              units="m" type="real" kind="kind_phys"
+              allocatable="allocatable">
+      <dimensions>horizontal_dimension</dimensions>
+      <initial_value>0.0_kind_phys</initial_value>
+      <ic_file_input_names>pbuf_cush</ic_file_input_names>
+    </variable>
+    <variable local_name="tke"
+              standard_name="specific_turbulent_kinetic_energy_at_interfaces"
+              units="m2 s-2" type="real" kind="kind_phys"
+              allocatable="allocatable">
+      <dimensions>horizontal_dimension vertical_interface_dimension</dimensions>
+      <initial_value>0.0_kind_phys</initial_value>
+      <ic_file_input_names>pbuf_tke</ic_file_input_names>
+    </variable>
 
     <!-- rk_stratiform microphysics/macrophysics variables - need to be kept in the CAM registry -->
     <variable local_name="qcwat"