diff --git a/ccpp/config/ccpp_prebuild_config.py b/ccpp/config/ccpp_prebuild_config.py
index d055a7f0..3d81ac64 100755
--- a/ccpp/config/ccpp_prebuild_config.py
+++ b/ccpp/config/ccpp_prebuild_config.py
@@ -301,6 +301,7 @@
     'ccpp/physics/physics/rrtmgp_sw_aerosol_optics.F90'         : ['physics'],
     'ccpp/physics/physics/rrtmgp_lw_rte.F90'                    : ['physics'],
     'ccpp/physics/physics/rrtmgp_gfdlmp_lw_cloud_sampling.F90'  : ['physics'],
+    'ccpp/physics/physics/rrtmgp_lwadj.F90'                     : ['physics'],    
     'ccpp/physics/physics/rrtmgp_gfdlmp_sw_cloud_sampling.F90'  : ['physics'],
     'ccpp/physics/physics/rrtmgp_sw_rte.F90'                    : ['physics'],
     'ccpp/physics/physics/rrtmgp_lw_aerosol_optics.F90'         : ['physics'],
diff --git a/ccpp/physics b/ccpp/physics
index 16ab8762..b00d5fbf 160000
--- a/ccpp/physics
+++ b/ccpp/physics
@@ -1 +1 @@
-Subproject commit 16ab8762e1f16bc3228b4f173308326769a294e2
+Subproject commit b00d5fbf2189e65365ef0e04c741b82e1c6fe80b
diff --git a/ccpp/suites/suite_SCM_GFS_v15p2_RRTMGP.xml b/ccpp/suites/suite_SCM_GFS_v15p2_RRTMGP.xml
index 4d953944..1c7f4473 100644
--- a/ccpp/suites/suite_SCM_GFS_v15p2_RRTMGP.xml
+++ b/ccpp/suites/suite_SCM_GFS_v15p2_RRTMGP.xml
@@ -41,6 +41,7 @@
       <scheme>GFS_surface_composites_pre</scheme>
       <scheme>dcyc2t3</scheme>
       <scheme>GFS_surface_composites_inter</scheme>
+      <scheme>rrtmgp_lwadj</scheme>
       <scheme>GFS_suite_interstitial_2</scheme>
     </subcycle>
     <!-- Surface iteration loop -->
diff --git a/ccpp/suites/suite_SCM_GFS_v16beta_RRTMGP.xml b/ccpp/suites/suite_SCM_GFS_v16beta_RRTMGP.xml
index bbbe933c..0bddf69e 100644
--- a/ccpp/suites/suite_SCM_GFS_v16beta_RRTMGP.xml
+++ b/ccpp/suites/suite_SCM_GFS_v16beta_RRTMGP.xml
@@ -41,6 +41,7 @@
       <scheme>GFS_surface_composites_pre</scheme>
       <scheme>dcyc2t3</scheme>
       <scheme>GFS_surface_composites_inter</scheme>
+      <scheme>rrtmgp_lwadj</scheme>      
       <scheme>GFS_suite_interstitial_2</scheme>
     </subcycle>
     <!-- Surface iteration loop -->
diff --git a/scm/src/GFS_typedefs.F90 b/scm/src/GFS_typedefs.F90
index cd7cd026..f7fcdd73 100644
--- a/scm/src/GFS_typedefs.F90
+++ b/scm/src/GFS_typedefs.F90
@@ -1785,6 +1785,7 @@ module GFS_typedefs
     real (kind=kind_phys), pointer      :: tsfc_land(:)       => null()  !<
     real (kind=kind_phys), pointer      :: tsfc_ocean(:)      => null()  !<
     real (kind=kind_phys), pointer      :: tsfg(:)            => null()  !<
+    real (kind=kind_phys), pointer      :: sktp1r(:)          => null()  !<
     real (kind=kind_phys), pointer      :: tsnow(:)           => null()  !<
     real (kind=kind_phys), pointer      :: tsurf(:)           => null()  !<
     real (kind=kind_phys), pointer      :: tsurf_ice(:)       => null()  !<
@@ -5723,6 +5724,7 @@ subroutine interstitial_create (Interstitial, IM, Model)
     allocate (Interstitial%tsfc_land       (IM))
     allocate (Interstitial%tsfc_ocean      (IM))
     allocate (Interstitial%tsfg            (IM))
+    allocate (Interstitial%sktp1r          (IM))
     allocate (Interstitial%tsurf           (IM))
     allocate (Interstitial%tsurf_ice       (IM))
     allocate (Interstitial%tsurf_land      (IM))
diff --git a/scm/src/GFS_typedefs.meta b/scm/src/GFS_typedefs.meta
index fcc94575..ff273e87 100644
--- a/scm/src/GFS_typedefs.meta
+++ b/scm/src/GFS_typedefs.meta
@@ -8131,6 +8131,13 @@
   dimensions = (horizontal_dimension)
   type = real
   kind = kind_phys
+[sktp1r]
+  standard_name = surface_ground_temperature_for_radiation_at_previous_rad_time_step
+  long_name = surface ground temperature for radiation at previous radiation time step
+  units = K
+  dimensions = (horizontal_dimension)
+  type = real
+  kind = kind_phys 
 [tsurf]
   standard_name = surface_skin_temperature_after_iteration
   long_name = surface skin temperature after iteration