diff --git a/adb_graphics/default_specs.yml b/adb_graphics/default_specs.yml
index 7dbc258..15cc68b 100644
--- a/adb_graphics/default_specs.yml
+++ b/adb_graphics/default_specs.yml
@@ -347,7 +347,7 @@ ceilexp: # Ceiling - experimental
 ceilexp2: # Ceiling - experimental no.2
   ua:
     <<: *ceil
-    ncl_name: HGT_P0_L2_{grid}
+    ncl_name: CEIL_P0_L2_{grid}
     title: Ceiling (exp-2)
 cfrzr: # Categorical Freezing Rain
   sfc:
@@ -379,6 +379,11 @@ cin: # Surface Convective Inhibition
   sfclt:
     <<: *sfc_cin
     title: Surface CIN < -50
+cloudbase: # Cloud-base height
+  ua:
+    <<: *ceil
+    ncl_name: HGT_P0_L2_{grid}
+    title: Cloud-Base Height
 cloudcover:
   bndylay: &cld_cover # PBL ... 1 km Cloud Cover
     clevs: [2, 5, 10, 20, 30, 40, 50, 60, 70, 80, 90, 95]
diff --git a/image_lists/rrfs_subset.yml b/image_lists/rrfs_subset.yml
index 5590708..4b11fb3 100644
--- a/image_lists/rrfs_subset.yml
+++ b/image_lists/rrfs_subset.yml
@@ -28,6 +28,8 @@ hourly:
       - ua
     cin:
       - sfc
+    cloudbase:
+      - ua
     cloudcover:
       - bndylay
       - high