diff --git a/ocean_only/global_ALE/layer/available_diags.000000 b/ocean_only/global_ALE/layer/available_diags.000000
index 1eb54b585..4c76f69cc 100644
--- a/ocean_only/global_ALE/layer/available_diags.000000
+++ b/ocean_only/global_ALE/layer/available_diags.000000
@@ -1892,6 +1892,20 @@
     ! standard_name: integral_wrt_depth_of_sea_water_potential_temperature_expressed_as_heat_content
     ! cell_methods: xh:mean yh:mean zl:sum area:mean
     ! variants: {phcint,phcint_xyave}
+"t20d"  [Unused]
+    ! modules: {ocean_model,ocean_model_d2}
+    ! dimensions: xh, yh
+    ! long_name: Depth of 20 degree Celsius Isotherm
+    ! units: m
+    ! standard_name: depth_of_isosurface_of_sea_water_potential_temperature
+    ! cell_methods: xh:mean yh:mean area:mean
+"t17d"  [Unused]
+    ! modules: {ocean_model,ocean_model_d2}
+    ! dimensions: xh, yh
+    ! long_name: Depth of 17 degree Celsius Isotherm
+    ! units: m
+    ! standard_name: depth_of_isosurface_of_sea_water_potential_temperature
+    ! cell_methods: xh:mean yh:mean area:mean
 "u"  [Used] (CMOR equivalent is "uo")
     ! modules: {ocean_model,ocean_model_z,ocean_model_d2,ocean_model_z_d2}
     ! dimensions: xq, yh, zl
diff --git a/ocean_only/global_ALE/z/available_diags.000000 b/ocean_only/global_ALE/z/available_diags.000000
index 6c30f4c00..e668fb5d5 100644
--- a/ocean_only/global_ALE/z/available_diags.000000
+++ b/ocean_only/global_ALE/z/available_diags.000000
@@ -1918,6 +1918,20 @@
     ! standard_name: integral_wrt_depth_of_sea_water_potential_temperature_expressed_as_heat_content
     ! cell_methods: xh:mean yh:mean zl:sum area:mean
     ! variants: {phcint,phcint_xyave}
+"t20d"  [Unused]
+    ! modules: {ocean_model,ocean_model_d2}
+    ! dimensions: xh, yh
+    ! long_name: Depth of 20 degree Celsius Isotherm
+    ! units: m
+    ! standard_name: depth_of_isosurface_of_sea_water_potential_temperature
+    ! cell_methods: xh:mean yh:mean area:mean
+"t17d"  [Unused]
+    ! modules: {ocean_model,ocean_model_d2}
+    ! dimensions: xh, yh
+    ! long_name: Depth of 17 degree Celsius Isotherm
+    ! units: m
+    ! standard_name: depth_of_isosurface_of_sea_water_potential_temperature
+    ! cell_methods: xh:mean yh:mean area:mean
 "u"  [Used] (CMOR equivalent is "uo")
     ! modules: {ocean_model,ocean_model_z,ocean_model_d2,ocean_model_z_d2}
     ! dimensions: xq, yh, zl
diff --git a/src/MOM6 b/src/MOM6
index e1932f6e7..55d064c44 160000
--- a/src/MOM6
+++ b/src/MOM6
@@ -1 +1 @@
-Subproject commit e1932f6e7b3adcfb2cbc821650b42d630151bc23
+Subproject commit 55d064c448103a601ad56bef01b4b45daa77a670
diff --git a/src/SIS2 b/src/SIS2
index 35767bb84..28cdb3869 160000
--- a/src/SIS2
+++ b/src/SIS2
@@ -1 +1 @@
-Subproject commit 35767bb8436bba28774f9add64605b967a3289cf
+Subproject commit 28cdb3869b2643d8b24ebe7550d777605fbbe088