diff --git a/definitions/grib1/localConcepts/ecmf/cfVarName.def b/definitions/grib1/localConcepts/ecmf/cfVarName.def
index d3eb5a4f0..5dc3435b1 100644
--- a/definitions/grib1/localConcepts/ecmf/cfVarName.def
+++ b/definitions/grib1/localConcepts/ecmf/cfVarName.def
@@ -4054,32 +4054,32 @@
 	 table2Version = 210 ;
 	 indicatorOfParameter = 191 ;
 	}
-#UV visible albedo for diffuse radiation, isotropic component 
+#UV visible albedo for diffuse radiation, isotropic component
 'aluvdi' = {
 	 table2Version = 210 ;
 	 indicatorOfParameter = 192 ;
 	}
-#UV visible albedo for diffuse radiation, volumetric component 
+#UV visible albedo for diffuse radiation, volumetric component
 'aluvdv' = {
 	 table2Version = 210 ;
 	 indicatorOfParameter = 193 ;
 	}
-#UV visible albedo for diffuse radiation, geometric component 
+#UV visible albedo for diffuse radiation, geometric component
 'aluvdg' = {
 	 table2Version = 210 ;
 	 indicatorOfParameter = 194 ;
 	}
-#Near IR albedo for diffuse radiation, isotropic component 
+#Near IR albedo for diffuse radiation, isotropic component
 'alnidi' = {
 	 table2Version = 210 ;
 	 indicatorOfParameter = 195 ;
 	}
-#Near IR albedo for diffuse radiation, volumetric component 
+#Near IR albedo for diffuse radiation, volumetric component
 'alnidv' = {
 	 table2Version = 210 ;
 	 indicatorOfParameter = 196 ;
 	}
-#Near IR albedo for diffuse radiation, geometric component 
+#Near IR albedo for diffuse radiation, geometric component
 'alnidg' = {
 	 table2Version = 210 ;
 	 indicatorOfParameter = 197 ;
@@ -17594,12 +17594,12 @@
 	 table2Version = 228 ;
 	 indicatorOfParameter = 39 ;
 	}
-#U-component of neutral wind
+#10 metre u-component of neutral wind
 'u10n' = {
 	 table2Version = 228 ;
 	 indicatorOfParameter = 131 ;
 	}
-#V-component of neutral wind
+#10 metre v-component of neutral wind
 'v10n' = {
 	 table2Version = 228 ;
 	 indicatorOfParameter = 132 ;
diff --git a/definitions/grib1/localConcepts/ecmf/name.def b/definitions/grib1/localConcepts/ecmf/name.def
index 6cc48c520..6e7677835 100644
--- a/definitions/grib1/localConcepts/ecmf/name.def
+++ b/definitions/grib1/localConcepts/ecmf/name.def
@@ -17594,13 +17594,13 @@
 	 table2Version = 228 ;
 	 indicatorOfParameter = 39 ;
 	}
-#U-component of neutral wind
-'U-component of neutral wind' = {
+#10 metre u-component of neutral wind
+'10 metre u-component of neutral wind' = {
 	 table2Version = 228 ;
 	 indicatorOfParameter = 131 ;
 	}
-#V-component of neutral wind
-'V-component of neutral wind' = {
+#10 metre v-component of neutral wind
+'10 metre v-component of neutral wind' = {
 	 table2Version = 228 ;
 	 indicatorOfParameter = 132 ;
 	}
diff --git a/definitions/grib1/localConcepts/ecmf/paramId.def b/definitions/grib1/localConcepts/ecmf/paramId.def
index 3fea9d27b..f7db4d9f3 100644
--- a/definitions/grib1/localConcepts/ecmf/paramId.def
+++ b/definitions/grib1/localConcepts/ecmf/paramId.def
@@ -17594,12 +17594,12 @@
 	 table2Version = 228 ;
 	 indicatorOfParameter = 39 ;
 	}
-#U-component of neutral wind
+#10 metre u-component of neutral wind
 '228131' = {
 	 table2Version = 228 ;
 	 indicatorOfParameter = 131 ;
 	}
-#V-component of neutral wind
+#10 metre v-component of neutral wind
 '228132' = {
 	 table2Version = 228 ;
 	 indicatorOfParameter = 132 ;
diff --git a/definitions/grib1/localConcepts/ecmf/shortName.def b/definitions/grib1/localConcepts/ecmf/shortName.def
index 4c399f5a0..02132b9e2 100644
--- a/definitions/grib1/localConcepts/ecmf/shortName.def
+++ b/definitions/grib1/localConcepts/ecmf/shortName.def
@@ -17594,12 +17594,12 @@
 	 table2Version = 228 ;
 	 indicatorOfParameter = 39 ;
 	}
-#U-component of neutral wind
+#10 metre u-component of neutral wind
 'u10n' = {
 	 table2Version = 228 ;
 	 indicatorOfParameter = 131 ;
 	}
-#V-component of neutral wind
+#10 metre v-component of neutral wind
 'v10n' = {
 	 table2Version = 228 ;
 	 indicatorOfParameter = 132 ;
diff --git a/definitions/grib1/localConcepts/ecmf/units.def b/definitions/grib1/localConcepts/ecmf/units.def
index 4bf0f3db0..a0a826edc 100644
--- a/definitions/grib1/localConcepts/ecmf/units.def
+++ b/definitions/grib1/localConcepts/ecmf/units.def
@@ -17594,12 +17594,12 @@
 	 table2Version = 228 ;
 	 indicatorOfParameter = 39 ;
 	}
-#U-component of neutral wind
+#10 metre u-component of neutral wind
 'm s**-1' = {
 	 table2Version = 228 ;
 	 indicatorOfParameter = 131 ;
 	}
-#V-component of neutral wind
+#10 metre v-component of neutral wind
 'm s**-1' = {
 	 table2Version = 228 ;
 	 indicatorOfParameter = 132 ;
diff --git a/definitions/grib2/cfVarName.def b/definitions/grib2/cfVarName.def
index 718e2f939..fbed8075c 100644
--- a/definitions/grib2/cfVarName.def
+++ b/definitions/grib2/cfVarName.def
@@ -1186,7 +1186,7 @@
 	 constituentType = 60057 ;
 	 is_chemical = 1 ;
 	}
-#Column integrated mass density of Volcanic sulfur dioxide 
+#Column integrated mass density of Volcanic sulfur dioxide
 'tc_VSO2' = {
 	 discipline = 0 ;
 	 parameterCategory = 20 ;
@@ -1195,7 +1195,7 @@
 	 is_chemical_srcsink = 1 ;
 	 sourceSinkChemicalPhysicalProcess = 7 ;
 	}
-#Column integrated mass density of Aromatic peroxy radical 
+#Column integrated mass density of Aromatic peroxy radical
 'tc_AROO2' = {
 	 discipline = 0 ;
 	 parameterCategory = 20 ;
@@ -1203,7 +1203,7 @@
 	 constituentType = 60029 ;
 	 is_chemical = 1 ;
 	}
-#Column integrated mass density of Ethyne 
+#Column integrated mass density of Ethyne
 'tc_C2H2' = {
 	 discipline = 0 ;
 	 parameterCategory = 20 ;
@@ -1211,7 +1211,7 @@
 	 constituentType = 10010 ;
 	 is_chemical = 1 ;
 	}
-#Column integrated mass density of Acetonitrile 
+#Column integrated mass density of Acetonitrile
 'tc_CH3CN' = {
 	 discipline = 0 ;
 	 parameterCategory = 20 ;
@@ -1219,7 +1219,7 @@
 	 constituentType = 10007 ;
 	 is_chemical = 1 ;
 	}
-#Column integrated mass density of Methyl peroxy nitrate 
+#Column integrated mass density of Methyl peroxy nitrate
 'tc_CH3O2NO2' = {
 	 discipline = 0 ;
 	 parameterCategory = 20 ;
@@ -1227,7 +1227,7 @@
 	 constituentType = 10055 ;
 	 is_chemical = 1 ;
 	}
-#Column integrated mass density of Hydrogen cyanide 
+#Column integrated mass density of Hydrogen cyanide
 'tc_HCN' = {
 	 discipline = 0 ;
 	 parameterCategory = 20 ;
@@ -1235,7 +1235,7 @@
 	 constituentType = 10006 ;
 	 is_chemical = 1 ;
 	}
-#Column integrated mass density of Hydroperoxy aldehydes type 1 
+#Column integrated mass density of Hydroperoxy aldehydes type 1
 'tc_HPALD1' = {
 	 discipline = 0 ;
 	 parameterCategory = 20 ;
@@ -1243,7 +1243,7 @@
 	 constituentType = 60058 ;
 	 is_chemical = 1 ;
 	}
-#Column integrated mass density of Hydroperoxy aldehydes type 2 
+#Column integrated mass density of Hydroperoxy aldehydes type 2
 'tc_HPALD2' = {
 	 discipline = 0 ;
 	 parameterCategory = 20 ;
@@ -1251,7 +1251,7 @@
 	 constituentType = 60059 ;
 	 is_chemical = 1 ;
 	}
-#Column integrated mass density of Isoprene peroxy type B 
+#Column integrated mass density of Isoprene peroxy type B
 'tc_ISOPBO2' = {
 	 discipline = 0 ;
 	 parameterCategory = 20 ;
@@ -1259,7 +1259,7 @@
 	 constituentType = 60056 ;
 	 is_chemical = 1 ;
 	}
-#Column integrated mass density of Isoprene peroxy type D 
+#Column integrated mass density of Isoprene peroxy type D
 'tc_ISOPDO2' = {
 	 discipline = 0 ;
 	 parameterCategory = 20 ;
@@ -1267,7 +1267,7 @@
 	 constituentType = 60057 ;
 	 is_chemical = 1 ;
 	}
-#Atmosphere emission mass flux of Volcanic sulfur dioxide 
+#Atmosphere emission mass flux of Volcanic sulfur dioxide
 'e_VSO2' = {
 	 discipline = 0 ;
 	 parameterCategory = 20 ;
@@ -1276,7 +1276,7 @@
 	 is_chemical_srcsink = 1 ;
 	 sourceSinkChemicalPhysicalProcess = 7 ;
 	}
-#Atmosphere emission mass flux of Aromatic peroxy radical 
+#Atmosphere emission mass flux of Aromatic peroxy radical
 'e_AROO2' = {
 	 discipline = 0 ;
 	 parameterCategory = 20 ;
@@ -1284,7 +1284,7 @@
 	 constituentType = 60029 ;
 	 is_chemical = 1 ;
 	}
-#Atmosphere emission mass flux of Ethyne 
+#Atmosphere emission mass flux of Ethyne
 'e_C2H2' = {
 	 discipline = 0 ;
 	 parameterCategory = 20 ;
@@ -1292,7 +1292,7 @@
 	 constituentType = 10010 ;
 	 is_chemical = 1 ;
 	}
-#Atmosphere emission mass flux of Acetonitrile 
+#Atmosphere emission mass flux of Acetonitrile
 'e_CH3CN' = {
 	 discipline = 0 ;
 	 parameterCategory = 20 ;
@@ -1300,7 +1300,7 @@
 	 constituentType = 10007 ;
 	 is_chemical = 1 ;
 	}
-#Atmosphere emission mass flux of Methyl peroxy nitrate 
+#Atmosphere emission mass flux of Methyl peroxy nitrate
 'e_CH3O2NO2' = {
 	 discipline = 0 ;
 	 parameterCategory = 20 ;
@@ -1308,7 +1308,7 @@
 	 constituentType = 10055 ;
 	 is_chemical = 1 ;
 	}
-#Atmosphere emission mass flux of Hydrogen cyanide 
+#Atmosphere emission mass flux of Hydrogen cyanide
 'e_HCN' = {
 	 discipline = 0 ;
 	 parameterCategory = 20 ;
@@ -1316,7 +1316,7 @@
 	 constituentType = 10006 ;
 	 is_chemical = 1 ;
 	}
-#Atmosphere emission mass flux of Hydroperoxy aldehydes type 1 
+#Atmosphere emission mass flux of Hydroperoxy aldehydes type 1
 'e_HPALD1' = {
 	 discipline = 0 ;
 	 parameterCategory = 20 ;
@@ -1324,7 +1324,7 @@
 	 constituentType = 60058 ;
 	 is_chemical = 1 ;
 	}
-#Atmosphere emission mass flux of Hydroperoxy aldehydes type 2 
+#Atmosphere emission mass flux of Hydroperoxy aldehydes type 2
 'e_HPALD2' = {
 	 discipline = 0 ;
 	 parameterCategory = 20 ;
@@ -1332,7 +1332,7 @@
 	 constituentType = 60059 ;
 	 is_chemical = 1 ;
 	}
-#Atmosphere emission mass flux of Isoprene peroxy type B 
+#Atmosphere emission mass flux of Isoprene peroxy type B
 'e_ISOPBO2' = {
 	 discipline = 0 ;
 	 parameterCategory = 20 ;
@@ -1340,7 +1340,7 @@
 	 constituentType = 60056 ;
 	 is_chemical = 1 ;
 	}
-#Atmosphere emission mass flux of Isoprene peroxy type D 
+#Atmosphere emission mass flux of Isoprene peroxy type D
 'e_ISOPDO2' = {
 	 discipline = 0 ;
 	 parameterCategory = 20 ;
@@ -1348,7 +1348,7 @@
 	 constituentType = 60057 ;
 	 is_chemical = 1 ;
 	}
-#Dry deposition velocity of Volcanic sulfur dioxide 
+#Dry deposition velocity of Volcanic sulfur dioxide
 'dv_VSO2' = {
 	 discipline = 0 ;
 	 parameterCategory = 20 ;
@@ -1357,7 +1357,7 @@
 	 is_chemical_srcsink = 1 ;
 	 sourceSinkChemicalPhysicalProcess = 7 ;
 	}
-#Dry deposition velocity of Aromatic peroxy radical 
+#Dry deposition velocity of Aromatic peroxy radical
 'dv_AROO2' = {
 	 discipline = 0 ;
 	 parameterCategory = 20 ;
@@ -1365,7 +1365,7 @@
 	 constituentType = 60029 ;
 	 is_chemical = 1 ;
 	}
-#Dry deposition velocity of Ethyne 
+#Dry deposition velocity of Ethyne
 'dv_C2H2' = {
 	 discipline = 0 ;
 	 parameterCategory = 20 ;
@@ -1373,7 +1373,7 @@
 	 constituentType = 10010 ;
 	 is_chemical = 1 ;
 	}
-#Dry deposition velocity of Acetonitrile 
+#Dry deposition velocity of Acetonitrile
 'dv_CH3CN' = {
 	 discipline = 0 ;
 	 parameterCategory = 20 ;
@@ -1381,7 +1381,7 @@
 	 constituentType = 10007 ;
 	 is_chemical = 1 ;
 	}
-#Dry deposition velocity of Methyl peroxy nitrate 
+#Dry deposition velocity of Methyl peroxy nitrate
 'dv_CH3O2NO2' = {
 	 discipline = 0 ;
 	 parameterCategory = 20 ;
@@ -1389,7 +1389,7 @@
 	 constituentType = 10055 ;
 	 is_chemical = 1 ;
 	}
-#Dry deposition velocity of Hydrogen cyanide 
+#Dry deposition velocity of Hydrogen cyanide
 'dv_HCN' = {
 	 discipline = 0 ;
 	 parameterCategory = 20 ;
@@ -1397,7 +1397,7 @@
 	 constituentType = 10006 ;
 	 is_chemical = 1 ;
 	}
-#Dry deposition velocity of Hydroperoxy aldehydes type 1 
+#Dry deposition velocity of Hydroperoxy aldehydes type 1
 'dv_HPALD1' = {
 	 discipline = 0 ;
 	 parameterCategory = 20 ;
@@ -1405,7 +1405,7 @@
 	 constituentType = 60058 ;
 	 is_chemical = 1 ;
 	}
-#Dry deposition velocity of Hydroperoxy aldehydes type 2 
+#Dry deposition velocity of Hydroperoxy aldehydes type 2
 'dv_HPALD2' = {
 	 discipline = 0 ;
 	 parameterCategory = 20 ;
@@ -1413,7 +1413,7 @@
 	 constituentType = 60059 ;
 	 is_chemical = 1 ;
 	}
-#Dry deposition velocity of Isoprene peroxy type B 
+#Dry deposition velocity of Isoprene peroxy type B
 'dv_ISOPBO2' = {
 	 discipline = 0 ;
 	 parameterCategory = 20 ;
@@ -1421,7 +1421,7 @@
 	 constituentType = 60056 ;
 	 is_chemical = 1 ;
 	}
-#Dry deposition velocity of Isoprene peroxy type D 
+#Dry deposition velocity of Isoprene peroxy type D
 'dv_ISOPDO2' = {
 	 discipline = 0 ;
 	 parameterCategory = 20 ;
@@ -7198,17 +7198,23 @@
 	 parameterCategory = 19 ;
 	 parameterNumber = 43 ;
 	}
-#U-component of neutral wind
+#10 metre u-component of neutral wind
 'u10n' = {
 	 discipline = 0 ;
 	 parameterCategory = 2 ;
 	 parameterNumber = 56 ;
+	 typeOfFirstFixedSurface = 103 ;
+	 scaledValueOfFirstFixedSurface = 10 ;
+	 scaleFactorOfFirstFixedSurface = 0 ;
 	}
-#V-component of neutral wind
+#10 metre v-component of neutral wind
 'v10n' = {
 	 discipline = 0 ;
 	 parameterCategory = 2 ;
 	 parameterNumber = 57 ;
+	 typeOfFirstFixedSurface = 103 ;
+	 scaledValueOfFirstFixedSurface = 10 ;
+	 scaleFactorOfFirstFixedSurface = 0 ;
 	}
 #100 metre U wind component
 'u100' = {
@@ -8014,7 +8020,7 @@
 	 parameterCategory = 4 ;
 	 parameterNumber = 50 ;
 	}
-#UV index 
+#UV index
 'uvi' = {
 	 discipline = 0 ;
 	 parameterCategory = 4 ;
@@ -8716,7 +8722,7 @@
 	 parameterCategory = 1 ;
 	 parameterNumber = 3 ;
 	}
-#Estimated u component of wind 
+#Estimated u component of wind
 'estu' = {
 	 discipline = 3 ;
 	 parameterCategory = 1 ;
@@ -8980,13 +8986,13 @@
 	 parameterCategory = 2 ;
 	 parameterNumber = 16 ;
 	}
-#U-component of current 
+#U-component of current
 'ucurr' = {
 	 discipline = 10 ;
 	 parameterCategory = 1 ;
 	 parameterNumber = 2 ;
 	}
-#V-component of current 
+#V-component of current
 'vcurr' = {
 	 discipline = 10 ;
 	 parameterCategory = 1 ;
diff --git a/definitions/grib2/localConcepts/ecmf/cfVarName.legacy.def b/definitions/grib2/localConcepts/ecmf/cfVarName.legacy.def
index d39e3fecd..f0ef927d5 100644
--- a/definitions/grib2/localConcepts/ecmf/cfVarName.legacy.def
+++ b/definitions/grib2/localConcepts/ecmf/cfVarName.legacy.def
@@ -769,7 +769,7 @@
  parameterCategory = 128 ;
  parameterNumber = 245 ;
 }
-#U-component of neutral wind
+#10 metre u-component of neutral wind
 'u10n' = {
  discipline = 192 ;
  parameterCategory = 228 ;
diff --git a/definitions/grib2/localConcepts/ecmf/name.legacy.def b/definitions/grib2/localConcepts/ecmf/name.legacy.def
index 5b086af82..50a64458f 100644
--- a/definitions/grib2/localConcepts/ecmf/name.legacy.def
+++ b/definitions/grib2/localConcepts/ecmf/name.legacy.def
@@ -769,8 +769,8 @@
  parameterCategory = 128 ;
  parameterNumber = 245 ;
 }
-#U-component of neutral wind
-'U-component of neutral wind' = {
+#10 metre u-component of neutral wind
+'10 metre u-component of neutral wind' = {
  discipline = 192 ;
  parameterCategory = 228 ;
  parameterNumber = 131 ;
diff --git a/definitions/grib2/localConcepts/ecmf/paramId.legacy.def b/definitions/grib2/localConcepts/ecmf/paramId.legacy.def
index 5d59734a9..8ac6e9834 100644
--- a/definitions/grib2/localConcepts/ecmf/paramId.legacy.def
+++ b/definitions/grib2/localConcepts/ecmf/paramId.legacy.def
@@ -769,7 +769,7 @@
  parameterCategory = 128 ;
  parameterNumber = 245 ;
 }
-#U-component of neutral wind
+#10 metre u-component of neutral wind
 '228131' = {
  discipline = 192 ;
  parameterCategory = 228 ;
diff --git a/definitions/grib2/localConcepts/ecmf/shortName.legacy.def b/definitions/grib2/localConcepts/ecmf/shortName.legacy.def
index 57dc9cc4c..0c2c2cfcb 100644
--- a/definitions/grib2/localConcepts/ecmf/shortName.legacy.def
+++ b/definitions/grib2/localConcepts/ecmf/shortName.legacy.def
@@ -769,7 +769,7 @@
  parameterCategory = 128 ;
  parameterNumber = 245 ;
 }
-#U-component of neutral wind
+#10 metre u-component of neutral wind
 'u10n' = {
  discipline = 192 ;
  parameterCategory = 228 ;
diff --git a/definitions/grib2/localConcepts/ecmf/units.legacy.def b/definitions/grib2/localConcepts/ecmf/units.legacy.def
index 205fa02fb..e2ad66fde 100644
--- a/definitions/grib2/localConcepts/ecmf/units.legacy.def
+++ b/definitions/grib2/localConcepts/ecmf/units.legacy.def
@@ -769,7 +769,7 @@
  parameterCategory = 128 ;
  parameterNumber = 245 ;
 }
-#U-component of neutral wind
+#10 metre u-component of neutral wind
 'm s**-1' = {
  discipline = 192 ;
  parameterCategory = 228 ;
diff --git a/definitions/grib2/name.def b/definitions/grib2/name.def
index 563d05ebc..d6c843f5f 100644
--- a/definitions/grib2/name.def
+++ b/definitions/grib2/name.def
@@ -7198,17 +7198,23 @@
 	 parameterCategory = 19 ;
 	 parameterNumber = 43 ;
 	}
-#U-component of neutral wind
-'U-component of neutral wind' = {
+#10 metre u-component of neutral wind
+'10 metre u-component of neutral wind' = {
 	 discipline = 0 ;
 	 parameterCategory = 2 ;
 	 parameterNumber = 56 ;
+	 typeOfFirstFixedSurface = 103 ;
+	 scaledValueOfFirstFixedSurface = 10 ;
+	 scaleFactorOfFirstFixedSurface = 0 ;
 	}
-#V-component of neutral wind
-'V-component of neutral wind' = {
+#10 metre v-component of neutral wind
+'10 metre v-component of neutral wind' = {
 	 discipline = 0 ;
 	 parameterCategory = 2 ;
 	 parameterNumber = 57 ;
+	 typeOfFirstFixedSurface = 103 ;
+	 scaledValueOfFirstFixedSurface = 10 ;
+	 scaleFactorOfFirstFixedSurface = 0 ;
 	}
 #100 metre U wind component
 '100 metre U wind component' = {
diff --git a/definitions/grib2/paramId.def b/definitions/grib2/paramId.def
index 8a7b40e99..50bc2c511 100644
--- a/definitions/grib2/paramId.def
+++ b/definitions/grib2/paramId.def
@@ -7198,17 +7198,23 @@
 	 parameterCategory = 19 ;
 	 parameterNumber = 43 ;
 	}
-#U-component of neutral wind
+#10 metre u-component of neutral wind
 '228131' = {
 	 discipline = 0 ;
 	 parameterCategory = 2 ;
 	 parameterNumber = 56 ;
+	 typeOfFirstFixedSurface = 103 ;
+	 scaledValueOfFirstFixedSurface = 10 ;
+	 scaleFactorOfFirstFixedSurface = 0 ;
 	}
-#V-component of neutral wind
+#10 metre v-component of neutral wind
 '228132' = {
 	 discipline = 0 ;
 	 parameterCategory = 2 ;
 	 parameterNumber = 57 ;
+	 typeOfFirstFixedSurface = 103 ;
+	 scaledValueOfFirstFixedSurface = 10 ;
+	 scaleFactorOfFirstFixedSurface = 0 ;
 	}
 #100 metre U wind component
 '228246' = {
diff --git a/definitions/grib2/shortName.def b/definitions/grib2/shortName.def
index 96060d34f..395352a11 100644
--- a/definitions/grib2/shortName.def
+++ b/definitions/grib2/shortName.def
@@ -7198,17 +7198,23 @@
 	 parameterCategory = 19 ;
 	 parameterNumber = 43 ;
 	}
-#U-component of neutral wind
+#10 metre u-component of neutral wind
 'u10n' = {
 	 discipline = 0 ;
 	 parameterCategory = 2 ;
 	 parameterNumber = 56 ;
+	 typeOfFirstFixedSurface = 103 ;
+	 scaledValueOfFirstFixedSurface = 10 ;
+	 scaleFactorOfFirstFixedSurface = 0 ;
 	}
-#V-component of neutral wind
+#10 metre v-component of neutral wind
 'v10n' = {
 	 discipline = 0 ;
 	 parameterCategory = 2 ;
 	 parameterNumber = 57 ;
+	 typeOfFirstFixedSurface = 103 ;
+	 scaledValueOfFirstFixedSurface = 10 ;
+	 scaleFactorOfFirstFixedSurface = 0 ;
 	}
 #100 metre U wind component
 '100u' = {
diff --git a/definitions/grib2/units.def b/definitions/grib2/units.def
index 4d0c360c3..84def1118 100644
--- a/definitions/grib2/units.def
+++ b/definitions/grib2/units.def
@@ -7198,17 +7198,23 @@
 	 parameterCategory = 19 ;
 	 parameterNumber = 43 ;
 	}
-#U-component of neutral wind
+#10 metre u-component of neutral wind
 'm s**-1' = {
 	 discipline = 0 ;
 	 parameterCategory = 2 ;
 	 parameterNumber = 56 ;
+	 typeOfFirstFixedSurface = 103 ;
+	 scaledValueOfFirstFixedSurface = 10 ;
+	 scaleFactorOfFirstFixedSurface = 0 ;
 	}
-#V-component of neutral wind
+#10 metre v-component of neutral wind
 'm s**-1' = {
 	 discipline = 0 ;
 	 parameterCategory = 2 ;
 	 parameterNumber = 57 ;
+	 typeOfFirstFixedSurface = 103 ;
+	 scaledValueOfFirstFixedSurface = 10 ;
+	 scaleFactorOfFirstFixedSurface = 0 ;
 	}
 #100 metre U wind component
 'm s**-1' = {