diff --git a/definitions/grib2/cfVarName.def b/definitions/grib2/cfVarName.def
index 3e0b0f0f4..d96c4f5f2 100644
--- a/definitions/grib2/cfVarName.def
+++ b/definitions/grib2/cfVarName.def
@@ -7480,12 +7480,6 @@
 	 discipline = 10 ;
 	 parameterCategory = 2 ;
 	 parameterNumber = 1 ;
-	 typeOfFirstFixedSurface = 174 ;
-	 typeOfSecondFixedSurface = 176 ;
-	 scaledValueOfFirstFixedSurface = missing() ;
-	 scaleFactorOfFirstFixedSurface = missing() ;
-	 scaledValueOfSecondFixedSurface = missing() ;
-	 scaleFactorOfSecondFixedSurface = missing() ;
 	}
 #Sea ice area fraction
 'siconc' = {
@@ -8590,12 +8584,6 @@
 	 discipline = 10 ;
 	 parameterCategory = 2 ;
 	 parameterNumber = 1 ;
-	 typeOfFirstFixedSurface = 174 ;
-	 typeOfSecondFixedSurface = 176 ;
-	 scaledValueOfFirstFixedSurface = missing() ;
-	 scaleFactorOfFirstFixedSurface = missing() ;
-	 scaledValueOfSecondFixedSurface = missing() ;
-	 scaleFactorOfSecondFixedSurface = missing() ;
 	 typeOfStatisticalProcessing = 0 ;
 	}
 #Time-mean sea ice area fraction
diff --git a/definitions/grib2/name.def b/definitions/grib2/name.def
index ceddbd354..a429aa897 100644
--- a/definitions/grib2/name.def
+++ b/definitions/grib2/name.def
@@ -7480,12 +7480,6 @@
 	 discipline = 10 ;
 	 parameterCategory = 2 ;
 	 parameterNumber = 1 ;
-	 typeOfFirstFixedSurface = 174 ;
-	 typeOfSecondFixedSurface = 176 ;
-	 scaledValueOfFirstFixedSurface = missing() ;
-	 scaleFactorOfFirstFixedSurface = missing() ;
-	 scaledValueOfSecondFixedSurface = missing() ;
-	 scaleFactorOfSecondFixedSurface = missing() ;
 	}
 #Sea ice area fraction
 'Sea ice area fraction' = {
@@ -8590,12 +8584,6 @@
 	 discipline = 10 ;
 	 parameterCategory = 2 ;
 	 parameterNumber = 1 ;
-	 typeOfFirstFixedSurface = 174 ;
-	 typeOfSecondFixedSurface = 176 ;
-	 scaledValueOfFirstFixedSurface = missing() ;
-	 scaleFactorOfFirstFixedSurface = missing() ;
-	 scaledValueOfSecondFixedSurface = missing() ;
-	 scaleFactorOfSecondFixedSurface = missing() ;
 	 typeOfStatisticalProcessing = 0 ;
 	}
 #Time-mean sea ice area fraction
diff --git a/definitions/grib2/paramId.def b/definitions/grib2/paramId.def
index 9d5c36c08..3e534871d 100644
--- a/definitions/grib2/paramId.def
+++ b/definitions/grib2/paramId.def
@@ -7480,12 +7480,6 @@
 	 discipline = 10 ;
 	 parameterCategory = 2 ;
 	 parameterNumber = 1 ;
-	 typeOfFirstFixedSurface = 174 ;
-	 typeOfSecondFixedSurface = 176 ;
-	 scaledValueOfFirstFixedSurface = missing() ;
-	 scaleFactorOfFirstFixedSurface = missing() ;
-	 scaledValueOfSecondFixedSurface = missing() ;
-	 scaleFactorOfSecondFixedSurface = missing() ;
 	}
 #Sea ice area fraction
 '262001' = {
@@ -8590,12 +8584,6 @@
 	 discipline = 10 ;
 	 parameterCategory = 2 ;
 	 parameterNumber = 1 ;
-	 typeOfFirstFixedSurface = 174 ;
-	 typeOfSecondFixedSurface = 176 ;
-	 scaledValueOfFirstFixedSurface = missing() ;
-	 scaleFactorOfFirstFixedSurface = missing() ;
-	 scaledValueOfSecondFixedSurface = missing() ;
-	 scaleFactorOfSecondFixedSurface = missing() ;
 	 typeOfStatisticalProcessing = 0 ;
 	}
 #Time-mean sea ice area fraction
diff --git a/definitions/grib2/shortName.def b/definitions/grib2/shortName.def
index ef199a6b9..29c96c4c4 100644
--- a/definitions/grib2/shortName.def
+++ b/definitions/grib2/shortName.def
@@ -7480,12 +7480,6 @@
 	 discipline = 10 ;
 	 parameterCategory = 2 ;
 	 parameterNumber = 1 ;
-	 typeOfFirstFixedSurface = 174 ;
-	 typeOfSecondFixedSurface = 176 ;
-	 scaledValueOfFirstFixedSurface = missing() ;
-	 scaleFactorOfFirstFixedSurface = missing() ;
-	 scaledValueOfSecondFixedSurface = missing() ;
-	 scaleFactorOfSecondFixedSurface = missing() ;
 	}
 #Sea ice area fraction
 'siconc' = {
@@ -8590,12 +8584,6 @@
 	 discipline = 10 ;
 	 parameterCategory = 2 ;
 	 parameterNumber = 1 ;
-	 typeOfFirstFixedSurface = 174 ;
-	 typeOfSecondFixedSurface = 176 ;
-	 scaledValueOfFirstFixedSurface = missing() ;
-	 scaleFactorOfFirstFixedSurface = missing() ;
-	 scaledValueOfSecondFixedSurface = missing() ;
-	 scaleFactorOfSecondFixedSurface = missing() ;
 	 typeOfStatisticalProcessing = 0 ;
 	}
 #Time-mean sea ice area fraction
diff --git a/definitions/grib2/units.def b/definitions/grib2/units.def
index bd2bb02d3..108e1fb71 100644
--- a/definitions/grib2/units.def
+++ b/definitions/grib2/units.def
@@ -7480,12 +7480,6 @@
 	 discipline = 10 ;
 	 parameterCategory = 2 ;
 	 parameterNumber = 1 ;
-	 typeOfFirstFixedSurface = 174 ;
-	 typeOfSecondFixedSurface = 176 ;
-	 scaledValueOfFirstFixedSurface = missing() ;
-	 scaleFactorOfFirstFixedSurface = missing() ;
-	 scaledValueOfSecondFixedSurface = missing() ;
-	 scaleFactorOfSecondFixedSurface = missing() ;
 	}
 #Sea ice area fraction
 'Fraction' = {
@@ -8590,12 +8584,6 @@
 	 discipline = 10 ;
 	 parameterCategory = 2 ;
 	 parameterNumber = 1 ;
-	 typeOfFirstFixedSurface = 174 ;
-	 typeOfSecondFixedSurface = 176 ;
-	 scaledValueOfFirstFixedSurface = missing() ;
-	 scaleFactorOfFirstFixedSurface = missing() ;
-	 scaledValueOfSecondFixedSurface = missing() ;
-	 scaleFactorOfSecondFixedSurface = missing() ;
 	 typeOfStatisticalProcessing = 0 ;
 	}
 #Time-mean sea ice area fraction