diff --git a/Varfields.md b/Varfields.md
index 32a48fb7..7098ffa9 100644
--- a/Varfields.md
+++ b/Varfields.md
@@ -31,7 +31,7 @@
 | 31 | `VarField_solzenith` | `SolarZenith(:)` | solar zenith angle | `MetaData/solarZenithAngle` | |
 | 32 | `VarField_solazimth` | | | | Implement |
 | 34 | `VarField_iremiss` | `IREmiss(:)` | surface emissivity (satellite 1dvar) | 'Emiss/emissivityIR' | |
-| 35 | `VarField_cloudtopp` | `CloudTopP(:)` | cloud top pressure (hPa) (satellite 1dvar) | `OneDVar/pressureAtTopOfCloud` | |
+| 35 | `VarField_cloudtopp` | `CloudTopP(:)` | cloud top pressure (hPa) (satellite 1dvar) | `OutputToVAR/pressureAtTopOfCloud` | |
 | 36 | `VarField_cloudfrac` | `CloudFrac(:)` | cloud fraction (satellite 1dvar) | `OneDVar/cloudAmount` | |
 | 39 | `VarField_vnatovpp` | | | | Implement |
 | 40 | `VarField_procoption` | | | | Implement |
diff --git a/src/opsinputs/opsinputs_varobswriter_mod.F90 b/src/opsinputs/opsinputs_varobswriter_mod.F90
index 16cb5039..f4021589 100644
--- a/src/opsinputs/opsinputs_varobswriter_mod.F90
+++ b/src/opsinputs/opsinputs_varobswriter_mod.F90
@@ -919,7 +919,7 @@ subroutine opsinputs_varobswriter_populateobservations( &
     case (VarField_cloudtopp)
       call opsinputs_fill_fillreal( &
         Ob % Header % CloudTopP, "CloudTopP", JediToOpsLayoutMapping, Ob % CloudTopP, &
-        ObsSpace, "pressureAtTopOfCloud", "OneDVar")
+        ObsSpace, "pressureAtTopOfCloud", "OutputToVAR")
     case (VarField_cloudfrac)
       call opsinputs_fill_fillreal( &
         Ob % Header % CloudFrac, "CloudFrac", JediToOpsLayoutMapping, Ob % CloudFrac, &
diff --git a/test/generate_unittest_netcdfs.py b/test/generate_unittest_netcdfs.py
index 0c2ccb95..7d56ab0e 100644
--- a/test/generate_unittest_netcdfs.py
+++ b/test/generate_unittest_netcdfs.py
@@ -648,7 +648,7 @@ def copy_var_to_var(Group, invarname, outvarname, filename):
     output_1d_normal_int_var_to_netcdf('satelliteIdentifier', 'MetaData',     'testinput/028_VarField_satid.nc4')
     output_1d_normal_var_to_netcdf   ('solarZenithAngle', 'MetaData', 'testinput/031_VarField_solzenith.nc4')
     output_1d_normal_var_to_netcdf   ('emissivityIR', 'Emiss', 'testinput/034_VarField_iremiss.nc4')
-    output_1d_normal_var_to_netcdf   ('pressureAtTopOfCloud', 'OneDVar', 'testinput/035_VarField_cloudtopp.nc4')
+    output_1d_normal_var_to_netcdf   ('pressureAtTopOfCloud', 'OutputToVAR', 'testinput/035_VarField_cloudtopp.nc4')
     output_1d_normal_var_to_netcdf   ('cloudAmount', 'OneDVar', 'testinput/036_VarField_cloudfrac.nc4')
     output_2d_simulated_var_to_netcdf('windEastward', 'testinput/051_VarField_u10ambwind.nc4', with_bias=True)
     output_2d_simulated_var_to_netcdf('windNorthward', 'testinput/052_VarField_v10ambwind.nc4', with_bias=True)
@@ -747,7 +747,7 @@ def copy_var_to_var(Group, invarname, outvarname, filename):
     # IASI - this tests the variable_for_quality_control option
     output_full_varobs_to_netcdf(['MetaData/latitude','MetaData/longitude',
                                   'OneDVar/skinTemperature','MetaData/sensorZenithAngle',
-                                  'MetaData/solarZenithAngle','OneDVar/pressureAtTopOfCloud','OneDVar/cloudAmount',
+                                  'MetaData/solarZenithAngle','OutputToVAR/pressureAtTopOfCloud','OneDVar/cloudAmount',
                                   'MetaData/ozoneTotal'],
                                  ['ObsValue/radiance','DerivedObsValue/brightnessTemperature','EffectiveError/brightnessTemperature',
                                   'OneDVar/emissivity', 'BiasCorrObsValue/brightnessTemperature',
diff --git a/test/testinput/035_VarField_cloudtopp.nc4 b/test/testinput/035_VarField_cloudtopp.nc4
index e31f74e7..e9f50dd0 100644
Binary files a/test/testinput/035_VarField_cloudtopp.nc4 and b/test/testinput/035_VarField_cloudtopp.nc4 differ
diff --git a/test/testinput/varobs_globalnamelist_iasi.nc4 b/test/testinput/varobs_globalnamelist_iasi.nc4
index 23261fbf..ff0d9017 100644
Binary files a/test/testinput/varobs_globalnamelist_iasi.nc4 and b/test/testinput/varobs_globalnamelist_iasi.nc4 differ