diff --git a/definitions/grib2/localConcepts/ecmf/unstructuredGridSubtype.def b/definitions/grib2/localConcepts/ecmf/unstructuredGridSubtype.def
index 3f93215f3..926277b83 100644
--- a/definitions/grib2/localConcepts/ecmf/unstructuredGridSubtype.def
+++ b/definitions/grib2/localConcepts/ecmf/unstructuredGridSubtype.def
@@ -4,3 +4,5 @@
 'V' = { numberOfGridInReference = 3; }
 'W' = { numberOfGridInReference = 4; }
 'F' = { numberOfGridInReference = 5; }
+'E' = { numberOfGridInReference = 6; }
+'N' = { numberOfGridInReference = 7; }
diff --git a/definitions/grib2/localConcepts/ecmf/unstructuredGridType.def b/definitions/grib2/localConcepts/ecmf/unstructuredGridType.def
index 33dcb3cac..dfcc93e2f 100644
--- a/definitions/grib2/localConcepts/ecmf/unstructuredGridType.def
+++ b/definitions/grib2/localConcepts/ecmf/unstructuredGridType.def
@@ -6,3 +6,5 @@
 'eORCA1'    = { numberOfGridUsed = 5; }
 'eORCA025'  = { numberOfGridUsed = 6; }
 'eORCA12'   = { numberOfGridUsed = 7; }
+'CORE2'     = { numberOfGridUsed = 8; }
+'NG5'       = { numberOfGridUsed = 9; }