diff --git a/definitions/grib2/localConcepts/destine/name.def b/definitions/grib2/localConcepts/destine/name.def
index ae7d6660c..e3d0d179b 100644
--- a/definitions/grib2/localConcepts/destine/name.def
+++ b/definitions/grib2/localConcepts/destine/name.def
@@ -113,6 +113,15 @@
 	 scaleFactorOfFirstFixedSurface = 0 ;
 	 typeOfStatisticalProcessing = 0 ;
 	}
+#Time-mean total cloud cover
+'Time-mean total cloud cover' = {
+	 discipline = 0 ;
+	 parameterCategory = 6 ;
+	 parameterNumber = 1 ;
+	 typeOfFirstFixedSurface = 1 ;
+	 typeOfSecondFixedSurface = 8 ;
+	 typeOfStatisticalProcessing = 0 ;
+	}
 #Carbon dioxide mass mixing ratio
 'Carbon dioxide mass mixing ratio' = {
 	 discipline = 0 ;
diff --git a/definitions/grib2/localConcepts/destine/paramId.def b/definitions/grib2/localConcepts/destine/paramId.def
index 119e7bccb..cb70ca6f2 100644
--- a/definitions/grib2/localConcepts/destine/paramId.def
+++ b/definitions/grib2/localConcepts/destine/paramId.def
@@ -113,6 +113,15 @@
 	 scaleFactorOfFirstFixedSurface = 0 ;
 	 typeOfStatisticalProcessing = 0 ;
 	}
+#Time-mean total cloud cover
+'235288' = {
+	 discipline = 0 ;
+	 parameterCategory = 6 ;
+	 parameterNumber = 1 ;
+	 typeOfFirstFixedSurface = 1 ;
+	 typeOfSecondFixedSurface = 8 ;
+	 typeOfStatisticalProcessing = 0 ;
+	}
 #Carbon dioxide mass mixing ratio
 '210061' = {
 	 discipline = 0 ;
diff --git a/definitions/grib2/localConcepts/destine/shortName.def b/definitions/grib2/localConcepts/destine/shortName.def
index 8df10b3c5..c1a52bd34 100644
--- a/definitions/grib2/localConcepts/destine/shortName.def
+++ b/definitions/grib2/localConcepts/destine/shortName.def
@@ -113,6 +113,15 @@
 	 scaleFactorOfFirstFixedSurface = 0 ;
 	 typeOfStatisticalProcessing = 0 ;
 	}
+#Time-mean total cloud cover
+'avg_tcc' = {
+	 discipline = 0 ;
+	 parameterCategory = 6 ;
+	 parameterNumber = 1 ;
+	 typeOfFirstFixedSurface = 1 ;
+	 typeOfSecondFixedSurface = 8 ;
+	 typeOfStatisticalProcessing = 0 ;
+	}
 #Carbon dioxide mass mixing ratio
 'co2' = {
 	 discipline = 0 ;
diff --git a/definitions/grib2/localConcepts/destine/units.def b/definitions/grib2/localConcepts/destine/units.def
index 20d453306..6c33a49ba 100644
--- a/definitions/grib2/localConcepts/destine/units.def
+++ b/definitions/grib2/localConcepts/destine/units.def
@@ -113,6 +113,15 @@
 	 scaleFactorOfFirstFixedSurface = 0 ;
 	 typeOfStatisticalProcessing = 0 ;
 	}
+#Time-mean total cloud cover
+'%' = {
+	 discipline = 0 ;
+	 parameterCategory = 6 ;
+	 parameterNumber = 1 ;
+	 typeOfFirstFixedSurface = 1 ;
+	 typeOfSecondFixedSurface = 8 ;
+	 typeOfStatisticalProcessing = 0 ;
+	}
 #Carbon dioxide mass mixing ratio
 'kg kg**-1' = {
 	 discipline = 0 ;
diff --git a/definitions/grib2/localConcepts/era6/name.def b/definitions/grib2/localConcepts/era6/name.def
index 5831da6b4..a2a415724 100644
--- a/definitions/grib2/localConcepts/era6/name.def
+++ b/definitions/grib2/localConcepts/era6/name.def
@@ -498,6 +498,15 @@
 	 typeOfFirstFixedSurface = 105 ;
 	 typeOfStatisticalProcessing = 0 ;
 	}
+#Time-mean total cloud cover
+'Time-mean total cloud cover' = {
+	 discipline = 0 ;
+	 parameterCategory = 6 ;
+	 parameterNumber = 1 ;
+	 typeOfFirstFixedSurface = 1 ;
+	 typeOfSecondFixedSurface = 8 ;
+	 typeOfStatisticalProcessing = 0 ;
+	}
 #Snow thickness over sea ice
 'Snow thickness over sea ice' = {
 	 localTablesVersion = 1 ;
diff --git a/definitions/grib2/localConcepts/era6/paramId.def b/definitions/grib2/localConcepts/era6/paramId.def
index 3463b89aa..7b3a4f221 100644
--- a/definitions/grib2/localConcepts/era6/paramId.def
+++ b/definitions/grib2/localConcepts/era6/paramId.def
@@ -498,6 +498,15 @@
 	 typeOfFirstFixedSurface = 105 ;
 	 typeOfStatisticalProcessing = 0 ;
 	}
+#Time-mean total cloud cover
+'235288' = {
+	 discipline = 0 ;
+	 parameterCategory = 6 ;
+	 parameterNumber = 1 ;
+	 typeOfFirstFixedSurface = 1 ;
+	 typeOfSecondFixedSurface = 8 ;
+	 typeOfStatisticalProcessing = 0 ;
+	}
 #Snow thickness over sea ice
 '262002' = {
 	 localTablesVersion = 1 ;
diff --git a/definitions/grib2/localConcepts/era6/shortName.def b/definitions/grib2/localConcepts/era6/shortName.def
index b638f864f..22dfb8fa5 100644
--- a/definitions/grib2/localConcepts/era6/shortName.def
+++ b/definitions/grib2/localConcepts/era6/shortName.def
@@ -498,6 +498,15 @@
 	 typeOfFirstFixedSurface = 105 ;
 	 typeOfStatisticalProcessing = 0 ;
 	}
+#Time-mean total cloud cover
+'avg_tcc' = {
+	 discipline = 0 ;
+	 parameterCategory = 6 ;
+	 parameterNumber = 1 ;
+	 typeOfFirstFixedSurface = 1 ;
+	 typeOfSecondFixedSurface = 8 ;
+	 typeOfStatisticalProcessing = 0 ;
+	}
 #Snow thickness over sea ice
 'sisnthick' = {
 	 localTablesVersion = 1 ;
diff --git a/definitions/grib2/localConcepts/era6/units.def b/definitions/grib2/localConcepts/era6/units.def
index 551c415f0..207747472 100644
--- a/definitions/grib2/localConcepts/era6/units.def
+++ b/definitions/grib2/localConcepts/era6/units.def
@@ -498,6 +498,15 @@
 	 typeOfFirstFixedSurface = 105 ;
 	 typeOfStatisticalProcessing = 0 ;
 	}
+#Time-mean total cloud cover
+'%' = {
+	 discipline = 0 ;
+	 parameterCategory = 6 ;
+	 parameterNumber = 1 ;
+	 typeOfFirstFixedSurface = 1 ;
+	 typeOfSecondFixedSurface = 8 ;
+	 typeOfStatisticalProcessing = 0 ;
+	}
 #Snow thickness over sea ice
 'm' = {
 	 localTablesVersion = 1 ;