diff --git a/definitions/grib2/cfVarName.def b/definitions/grib2/cfVarName.def
index ab2927b4a..68a976c5b 100644
--- a/definitions/grib2/cfVarName.def
+++ b/definitions/grib2/cfVarName.def
@@ -10230,6 +10230,38 @@
 	 is_chemical_srcsink = 1 ;
 	 sourceSinkChemicalPhysicalProcess = 7 ;
 	}
+#Aerosol optical depth
+'aod' = {
+	 discipline = 0 ;
+	 parameterCategory = 20 ;
+	 parameterNumber = 102 ;
+	}
+#Single scattering albedo
+'ssa' = {
+	 discipline = 0 ;
+	 parameterCategory = 20 ;
+	 parameterNumber = 103 ;
+	}
+#Asymmetry Factor
+'asymf' = {
+	 discipline = 0 ;
+	 parameterCategory = 20 ;
+	 parameterNumber = 104 ;
+	}
+#Aerosol backscatter from top of atmosphere
+'aerbscattoa' = {
+	 discipline = 0 ;
+	 parameterCategory = 20 ;
+	 parameterNumber = 107 ;
+	 typeOfFirstFixedSurface = 8 ;
+	}
+#Aerosol backscatter from ground
+'aerbscatgnd' = {
+	 discipline = 0 ;
+	 parameterCategory = 20 ;
+	 parameterNumber = 108 ;
+	 typeOfFirstFixedSurface = 1 ;
+	}
 #Pressure tendency
 'ptend' = {
 	 discipline = 0 ;
diff --git a/definitions/grib2/name.def b/definitions/grib2/name.def
index 3432f9662..d79232bcc 100644
--- a/definitions/grib2/name.def
+++ b/definitions/grib2/name.def
@@ -10230,6 +10230,38 @@
 	 is_chemical_srcsink = 1 ;
 	 sourceSinkChemicalPhysicalProcess = 7 ;
 	}
+#Aerosol optical depth
+'Aerosol optical depth' = {
+	 discipline = 0 ;
+	 parameterCategory = 20 ;
+	 parameterNumber = 102 ;
+	}
+#Single scattering albedo
+'Single scattering albedo' = {
+	 discipline = 0 ;
+	 parameterCategory = 20 ;
+	 parameterNumber = 103 ;
+	}
+#Asymmetry Factor
+'Asymmetry Factor' = {
+	 discipline = 0 ;
+	 parameterCategory = 20 ;
+	 parameterNumber = 104 ;
+	}
+#Aerosol backscatter from top of atmosphere
+'Aerosol backscatter from top of atmosphere' = {
+	 discipline = 0 ;
+	 parameterCategory = 20 ;
+	 parameterNumber = 107 ;
+	 typeOfFirstFixedSurface = 8 ;
+	}
+#Aerosol backscatter from ground
+'Aerosol backscatter from ground' = {
+	 discipline = 0 ;
+	 parameterCategory = 20 ;
+	 parameterNumber = 108 ;
+	 typeOfFirstFixedSurface = 1 ;
+	}
 #Pressure tendency
 'Pressure tendency' = {
 	 discipline = 0 ;
diff --git a/definitions/grib2/paramId.def b/definitions/grib2/paramId.def
index 8f88f9348..e819eb5ab 100644
--- a/definitions/grib2/paramId.def
+++ b/definitions/grib2/paramId.def
@@ -10230,6 +10230,38 @@
 	 is_chemical_srcsink = 1 ;
 	 sourceSinkChemicalPhysicalProcess = 7 ;
 	}
+#Aerosol optical depth
+'457000' = {
+	 discipline = 0 ;
+	 parameterCategory = 20 ;
+	 parameterNumber = 102 ;
+	}
+#Single scattering albedo
+'458000' = {
+	 discipline = 0 ;
+	 parameterCategory = 20 ;
+	 parameterNumber = 103 ;
+	}
+#Asymmetry Factor
+'459000' = {
+	 discipline = 0 ;
+	 parameterCategory = 20 ;
+	 parameterNumber = 104 ;
+	}
+#Aerosol backscatter from top of atmosphere
+'460000' = {
+	 discipline = 0 ;
+	 parameterCategory = 20 ;
+	 parameterNumber = 107 ;
+	 typeOfFirstFixedSurface = 8 ;
+	}
+#Aerosol backscatter from ground
+'461000' = {
+	 discipline = 0 ;
+	 parameterCategory = 20 ;
+	 parameterNumber = 108 ;
+	 typeOfFirstFixedSurface = 1 ;
+	}
 #Pressure tendency
 '3003' = {
 	 discipline = 0 ;
diff --git a/definitions/grib2/shortName.def b/definitions/grib2/shortName.def
index 31b6cf9fe..3019ffd73 100644
--- a/definitions/grib2/shortName.def
+++ b/definitions/grib2/shortName.def
@@ -10230,6 +10230,38 @@
 	 is_chemical_srcsink = 1 ;
 	 sourceSinkChemicalPhysicalProcess = 7 ;
 	}
+#Aerosol optical depth
+'aod' = {
+	 discipline = 0 ;
+	 parameterCategory = 20 ;
+	 parameterNumber = 102 ;
+	}
+#Single scattering albedo
+'ssa' = {
+	 discipline = 0 ;
+	 parameterCategory = 20 ;
+	 parameterNumber = 103 ;
+	}
+#Asymmetry Factor
+'asymf' = {
+	 discipline = 0 ;
+	 parameterCategory = 20 ;
+	 parameterNumber = 104 ;
+	}
+#Aerosol backscatter from top of atmosphere
+'aerbscattoa' = {
+	 discipline = 0 ;
+	 parameterCategory = 20 ;
+	 parameterNumber = 107 ;
+	 typeOfFirstFixedSurface = 8 ;
+	}
+#Aerosol backscatter from ground
+'aerbscatgnd' = {
+	 discipline = 0 ;
+	 parameterCategory = 20 ;
+	 parameterNumber = 108 ;
+	 typeOfFirstFixedSurface = 1 ;
+	}
 #Pressure tendency
 'ptend' = {
 	 discipline = 0 ;
diff --git a/definitions/grib2/units.def b/definitions/grib2/units.def
index 3d9d63a65..175168e60 100644
--- a/definitions/grib2/units.def
+++ b/definitions/grib2/units.def
@@ -10230,6 +10230,38 @@
 	 is_chemical_srcsink = 1 ;
 	 sourceSinkChemicalPhysicalProcess = 7 ;
 	}
+#Aerosol optical depth
+'Numeric' = {
+	 discipline = 0 ;
+	 parameterCategory = 20 ;
+	 parameterNumber = 102 ;
+	}
+#Single scattering albedo
+'(0 - 1)' = {
+	 discipline = 0 ;
+	 parameterCategory = 20 ;
+	 parameterNumber = 103 ;
+	}
+#Asymmetry Factor
+'Numeric' = {
+	 discipline = 0 ;
+	 parameterCategory = 20 ;
+	 parameterNumber = 104 ;
+	}
+#Aerosol backscatter from top of atmosphere
+'m**-1 sr**-1' = {
+	 discipline = 0 ;
+	 parameterCategory = 20 ;
+	 parameterNumber = 107 ;
+	 typeOfFirstFixedSurface = 8 ;
+	}
+#Aerosol backscatter from ground
+'m**-1 sr**-1' = {
+	 discipline = 0 ;
+	 parameterCategory = 20 ;
+	 parameterNumber = 108 ;
+	 typeOfFirstFixedSurface = 1 ;
+	}
 #Pressure tendency
 'Pa s**-1' = {
 	 discipline = 0 ;