diff --git a/Metadata-standard-names.md b/Metadata-standard-names.md
index e77ba1e..637b1c8 100644
--- a/Metadata-standard-names.md
+++ b/Metadata-standard-names.md
@@ -253,9 +253,9 @@ Note that appending '_on_previous_timestep' to standard_names in this section yi
 * `mass_content_of_cloud_liquid_water_in_atmosphere_layer`: Mass content of cloud liquid water in atmosphere layer
     * `real(kind=kind_phys)`: units = kg m-2
 * `nonconvective_cloud_area_fraction_in_atmosphere_layer`: cloud area fraction in atmosphere layer excluding clouds produced by the convective schemes
-    * `real(kind=kind_phys)`: units = 1
+    * `real(kind=kind_phys)`: units = fraction
 * `relative_humidity`: Relative humidity
-    * `real(kind=kind_phys)`: units = 1
+    * `real(kind=kind_phys)`: units = fraction
 * `gravitational_acceleration`: Gravitational acceleration
     * `real(kind=kind_phys)`: units = m s-2
 ## diagnostics
@@ -463,7 +463,7 @@ Variables related to the compute environment
 * `autoconversion_to_rain_coefficient_for_deep_convection`: Autoconversion to rain coefficient for deep convection
     * `real(kind=kind_phys)`: units = 1
 * `chemical_tracer_scavenging_fractions`: Chemical tracer scavenging fractions
-    * `real(kind=kind_phys)`: units = 1
+    * `real(kind=kind_phys)`: units = fraction
 * `cloud_condensate_detrainment_coefficient`: Cloud condensate detrainment coefficient
     * `real(kind=kind_phys)`: units = 1
 * `control_for_convective_cloud_diagnostics`: Control for convective cloud diagnostics
@@ -475,11 +475,11 @@ Variables related to the compute environment
 * `tunable_parameter_for_critical_cloud_top_entrainment_instability_criteria`: Tunable parameter for critical cloud top entrainment instability criteria
     * `real(kind=kind_phys)`: units = 1
 * `critical_relative_humidity_at_top_of_atmosphere_boundary_layer`: Critical relative humidity at top of atmosphere boundary layer
-    * `real(kind=kind_phys)`: units = frac
+    * `real(kind=kind_phys)`: units = fraction
 * `critical_relative_humidity_at_surface`: Critical relative humidity at surface
-    * `real(kind=kind_phys)`: units = frac
+    * `real(kind=kind_phys)`: units = fraction
 * `critical_relative_humidity_at_toa`: Critical relative humidity at toa
-    * `real(kind=kind_phys)`: units = frac
+    * `real(kind=kind_phys)`: units = fraction
 * `date_and_time_at_model_initialization_in_iso_order`: Date and time at model initialization in iso order
     * `integer(kind=)`: units = 1
 * `date_and_time_at_model_initialization_in_united_states_order`: Date and time at model initialization in united states order
@@ -517,11 +517,11 @@ Variables related to the compute environment
 * `do_unified_gravity_wave_physics_gravity_wave_drag_scheme`: Do unified gravity wave physics gravity wave drag scheme
     * `logical(kind=)`: units = flag
 * `downdraft_area_fraction_in_scale_aware_tke_moist_edmf_pbl_scheme`: Downdraft area fraction in scale aware tke moist edmf pbl scheme
-    * `real(kind=kind_phys)`: units = 1
+    * `real(kind=kind_phys)`: units = fraction
 * `downdraft_fraction_reaching_surface_over_land_for_deep_convection`: Downdraft fraction reaching surface over land for deep convection
-    * `real(kind=kind_phys)`: units = frac
+    * `real(kind=kind_phys)`: units = fraction
 * `downdraft_fraction_reaching_surface_over_water_for_deep_convection`: Downdraft fraction reaching surface over water for deep convection
-    * `real(kind=kind_phys)`: units = frac
+    * `real(kind=kind_phys)`: units = fraction
 * `control_for_edmf_in_mellor_yamada_nakanishi_niino_pbl_scheme`: Control for edmf in mellor yamada nakanishi niino pbl scheme
     * `integer(kind=)`: units = 1
 * `control_for_edmf_momentum_transport_in_mellor_yamada_nakanishi_niino_pbl_scheme`: Control for edmf momentum transport in mellor yamada nakanishi niino pbl scheme
@@ -541,7 +541,7 @@ Variables related to the compute environment
 * `equation_of_time`: Equation of time
     * `real(kind=kind_phys)`: units = radian
 * `relative_humidity_threshold_for_condensation`: Relative humidity threshold for condensation
-    * `real(kind=kind_phys)`: units = 1
+    * `real(kind=kind_phys)`: units = fraction
 * `do_arakawa_wu_downdrafts_for_deep_convection`: Do arakawa wu downdrafts for deep convection
     * `logical(kind=)`: units = flag
 * `do_debug_output`: Do debug output
@@ -997,7 +997,7 @@ Variables related to the compute environment
 * `forecast_julian_day`: Forecast julian day
     * `real(kind=kind_phys)`: units = days
 * `min_lake_ice_area_fraction`: Min lake ice area fraction
-    * `real(kind=kind_phys)`: units = frac
+    * `real(kind=kind_phys)`: units = fraction
 * `multiplicative_tuning_parameter_for_reduced_latent_heat_flux_due_to_canopy_heat_storage`: Multiplicative tuning parameter for reduced latent heat flux due to canopy heat storage
     * `real(kind=kind_phys)`: units = 1
 * `max_tendency_of_air_potential_temperature_due_to_large_scale_precipitation`: Max tendency of air potential temperature due to large scale precipitation
@@ -1007,7 +1007,7 @@ Variables related to the compute environment
 * `land_surface_perturbation_magnitudes`: Land surface perturbation magnitudes
     * `real(kind=kind_phys)`: units = variable
 * `max_critical_relative_humidity`: Max critical relative humidity
-    * `real(kind=kind_phys)`: units = frac
+    * `real(kind=kind_phys)`: units = fraction
 * `max_grid_scale`: Max grid scale
     * `real(kind=kind_phys)`: units = m2 rad-2
 * `maximum_soil_moisture_content_for_land_surface_model`: Maximum soil moisture content for land surface model
@@ -1017,7 +1017,7 @@ Variables related to the compute environment
 * `autoconverion_to_snow_size_threshold`: Autoconverion to snow size threshold
     * `real(kind=kind_phys)`: units = um
 * `bergeron_findeisen_process_efficiency_factor`: Bergeron findeisen process efficiency factor
-    * `real(kind=kind_phys)`: units = frac
+    * `real(kind=kind_phys)`: units = fraction
 * `relative_variance_of_subgrid_cloud_condensate_distribution`: Relative variance of subgrid cloud condensate distribution
     * `real(kind=kind_phys)`: units = kg2 kg-2
 * `prescribed_number_concentration_of_cloud_droplets`: Prescribed number concentration of cloud droplets
@@ -1055,7 +1055,7 @@ Variables related to the compute environment
 * `minimum_cloud_ice_mixing_ratio_wrt_moist_air_threshold`: Minimum cloud ice mixing ratio wrt moist air threshold
     * `real(kind=kind_phys)`: units = kg kg-1
 * `relative_humidity_threshold_for_ice_nucleation`: Relative humidity threshold for ice nucleation
-    * `real(kind=kind_phys)`: units = 1
+    * `real(kind=kind_phys)`: units = fraction
 * `timescale_for_autoconversion_to_snow`: Timescale for autoconversion to snow
     * `real(kind=kind_phys)`: units = s
 * `alpha_tuning_coefficient_for_morrison_gettelman_microphysics_scheme`: Alpha tuning coefficient for morrison gettelman microphysics scheme
@@ -1063,7 +1063,7 @@ Variables related to the compute environment
 * `control_for_precipitation_area_fraction_method`: Control for precipitation area fraction method
     * `character(kind=len=16)`: units = none
 * `minimum_large_ice_fraction`: Minimum large ice fraction
-    * `real(kind=kind_phys)`: units = frac
+    * `real(kind=kind_phys)`: units = fraction
 * `minimum_pressure_in_rrtmgp`: Minimum pressure in rrtmgp
     * `real(kind=kind_phys)`: units = Pa
 * `min_grid_scale`: Min grid scale
@@ -1077,9 +1077,9 @@ Variables related to the compute environment
 * `control_for_mixing_length_in_mellor_yamada_nakanishi_niino_pbl_scheme`: Control for mixing length in mellor yamada nakanishi niino pbl scheme
     * `integer(kind=)`: units = 1
 * `momentum_transport_reduction_factor_due_to_pressure_gradient_force_for_deep_convection`: Momentum transport reduction factor due to pressure gradient force for deep convection
-    * `real(kind=kind_phys)`: units = frac
+    * `real(kind=kind_phys)`: units = fraction
 * `momentum_transport_reduction_factor_due_to_pressure_gradient_force_for_shallow_convection`: Momentum transport reduction factor due to pressure gradient force for shallow convection
-    * `real(kind=kind_phys)`: units = frac
+    * `real(kind=kind_phys)`: units = fraction
 * `mpi_communicator`: Mpi communicator
     * `integer(kind=)`: units = index
 * `mpi_rank`: Mpi rank
@@ -1193,9 +1193,9 @@ Variables related to the compute environment
 * `rain_conversion_parameter_for_shallow_convection`: Rain conversion parameter for shallow convection
     * `real(kind=kind_phys)`: units = m-1
 * `rain_evaporation_coefficient_over_ocean_for_deep_convection`: Rain evaporation coefficient over ocean for deep convection
-    * `real(kind=kind_phys)`: units = frac
+    * `real(kind=kind_phys)`: units = fraction
 * `rain_evaporation_coefficient_over_land_for_deep_convection`: Rain evaporation coefficient over land for deep convection
-    * `real(kind=kind_phys)`: units = frac
+    * `real(kind=kind_phys)`: units = fraction
 * `filename_of_rrtmgp_longwave_cloud_optics_coefficients`: Filename of rrtmgp longwave cloud optics coefficients
     * `character(kind=len=128)`: units = none
 * `filename_of_rrtmgp_shortwave_cloud_optics_coefficients`: Filename of rrtmgp shortwave cloud optics coefficients
@@ -1207,7 +1207,7 @@ Variables related to the compute environment
 * `do_rrtmgp_shortwave_and_rrtmg_longwave_radiation`: Do rrtmgp shortwave and rrtmg longwave radiation
     * `logical(kind=)`: units = flag
 * `min_sea_ice_area_fraction`: Min sea ice area fraction
-    * `real(kind=kind_phys)`: units = frac
+    * `real(kind=kind_phys)`: units = fraction
 * `forecast_time_in_seconds`: Forecast time in seconds
     * `real(kind=kind_phys)`: units = s
 * `random_number_seed_for_cellular_automata`: Random number seed for cellular automata
@@ -1265,7 +1265,7 @@ Variables related to the compute environment
 * `do_turbulent_orographic_form_drag_in_unified_gravity_wave_physics_gravitiy_wave_drag_scheme`: Do turbulent orographic form drag in unified gravity wave physics gravitiy wave drag scheme
     * `logical(kind=)`: units = flag
 * `updraft_area_fraction_in_scale_aware_tke_moist_edmf_pbl_scheme`: Updraft area fraction in scale aware tke moist edmf pbl scheme
-    * `real(kind=kind_phys)`: units = 1
+    * `real(kind=kind_phys)`: units = fraction
 * `tunable_parameter_1_for_maximum_cloud_base_updraft_velocity_in_chikira_sugiyama_deep_convection`: Tunable parameter 1 for maximum cloud base updraft velocity in chikira sugiyama deep convection
     * `real(kind=kind_phys)`: units = m s-1
 * `tunable_parameter_2_for_maximum_cloud_base_updraft_velocity_in_chikira_sugiyama_deep_convection`: Tunable parameter 2 for maximum cloud base updraft velocity in chikira sugiyama deep convection
@@ -1349,11 +1349,11 @@ Variables related to the compute environment
 * `atmosphere_updraft_convective_mass_flux_at_cloud_base_by_cloud_type`: Atmosphere updraft convective mass flux at cloud base by cloud type
     * `real(kind=kind_phys)`: units = kg m-2 s-1
 * `cloud_fraction_for_mg`: Cloud fraction for mg
-    * `real(kind=kind_phys)`: units = frac
+    * `real(kind=kind_phys)`: units = fraction
 * `counter_for_grell_freitas_convection`: Counter for grell freitas convection
     * `integer(kind=)`: units = count
 * `convective_cloud_area_fraction`: Convective cloud area fraction
-    * `real(kind=kind_phys)`: units = frac
+    * `real(kind=kind_phys)`: units = fraction
 * `convective_cloud_condensate_mixing_ratio_wrt_moist_air`: Convective cloud condensate mixing ratio wrt moist air
     * `real(kind=kind_phys)`: units = kg kg-1
 * `effective_radius_of_stratiform_cloud_graupel_particle`: Effective radius of stratiform cloud graupel particle
@@ -1409,13 +1409,13 @@ Variables related to the compute environment
 * `stability_function_for_heat`: Stability function for heat
     * `real(kind=kind_phys)`: units = 1
 * `subgrid_scale_cloud_area_fraction_in_atmosphere_layer`: Subgrid scale cloud area fraction in atmosphere layer
-    * `real(kind=kind_phys)`: units = frac
+    * `real(kind=kind_phys)`: units = fraction
 * `subgrid_scale_cloud_ice_mixing_ratio_wrt_moist_air`: Subgrid scale cloud ice mixing ratio wrt moist air
     * `real(kind=kind_phys)`: units = kg kg-1
 * `subgrid_scale_cloud_liquid_water_mixing_ratio_wrt_moist_air`: Subgrid scale cloud liquid water mixing ratio wrt moist air
     * `real(kind=kind_phys)`: units = kg kg-1
 * `subgrid_scale_cloud_fraction_from_shoc`: Subgrid scale cloud fraction from shoc
-    * `real(kind=kind_phys)`: units = frac
+    * `real(kind=kind_phys)`: units = fraction
 * `surface_air_pressure_on_previous_timestep`: Surface air pressure on previous timestep
     * `real(kind=kind_phys)`: units = Pa
 * `surface_air_pressure_two_timesteps_back`: Surface air pressure two timesteps back
@@ -1458,9 +1458,9 @@ Variables related to the compute environment
     * `real(kind=kind_phys)`: units = 1
 ## GFS_typedefs_GFS_sfcprop_type
 * `wet_canopy_area_fraction`: Wet canopy area fraction
-    * `real(kind=kind_phys)`: units = 1
+    * `real(kind=kind_phys)`: units = fraction
 * `baseline_surface_longwave_emissivity`: Baseline surface longwave emissivity
-    * `real(kind=kind_phys)`: units = frac
+    * `real(kind=kind_phys)`: units = fraction
 * `baseline_surface_roughness_length`: Baseline surface roughness length
     * `real(kind=kind_phys)`: units = m
 * `air_temperature_in_canopy`: Air temperature in canopy
@@ -1512,9 +1512,9 @@ Variables related to the compute environment
 * `precipitation_type`: Precipitation type
     * `real(kind=kind_phys)`: units = 1
 * `strong_cosz_area_fraction`: Strong cosz area fraction
-    * `real(kind=kind_phys)`: units = frac
+    * `real(kind=kind_phys)`: units = fraction
 * `weak_cosz_area_fraction`: Weak cosz area fraction
-    * `real(kind=kind_phys)`: units = frac
+    * `real(kind=kind_phys)`: units = fraction
 * `free_convection_layer_thickness_in_sea_water`: Free convection layer thickness in sea water
     * `real(kind=kind_phys)`: units = m
 * `consecutive_calls_for_grell_freitas_convection`: Consecutive calls for grell freitas convection
@@ -1534,13 +1534,13 @@ Variables related to the compute environment
 * `surface_upward_temperature_flux`: Surface upward temperature flux
     * `real(kind=kind_phys)`: units = K m s-1
 * `lake_area_fraction`: Lake area fraction
-    * `real(kind=kind_phys)`: units = frac
+    * `real(kind=kind_phys)`: units = fraction
 * `lake_depth`: Lake depth
     * `real(kind=kind_phys)`: units = m
 * `water_storage_in_lake`: Water storage in lake
     * `real(kind=kind_phys)`: units = mm
 * `land_area_fraction`: Land area fraction
-    * `real(kind=kind_phys)`: units = frac
+    * `real(kind=kind_phys)`: units = fraction
 * `depth_from_snow_surface_at_bottom_interface`: Depth from snow surface at bottom interface
     * `real(kind=kind_phys)`: units = m
 * `leaf_area_index`: Leaf area index
@@ -1558,17 +1558,17 @@ Variables related to the compute environment
 * `snow_mass_on_previous_timestep`: Snow mass on previous timestep
     * `real(kind=kind_phys)`: units = m
 * `max_vegetation_area_fraction`: Max vegetation area fraction
-    * `real(kind=kind_phys)`: units = frac
+    * `real(kind=kind_phys)`: units = fraction
 * `nir_albedo_strong_cosz`: Nir albedo strong cosz
-    * `real(kind=kind_phys)`: units = frac
+    * `real(kind=kind_phys)`: units = fraction
 * `nir_albedo_weak_cosz`: Nir albedo weak cosz
-    * `real(kind=kind_phys)`: units = frac
+    * `real(kind=kind_phys)`: units = fraction
 * `vis_albedo_strong_cosz`: Vis albedo strong cosz
-    * `real(kind=kind_phys)`: units = frac
+    * `real(kind=kind_phys)`: units = fraction
 * `vis_albedo_weak_cosz`: Vis albedo weak cosz
-    * `real(kind=kind_phys)`: units = frac
+    * `real(kind=kind_phys)`: units = fraction
 * `min_vegetation_area_fraction`: Min vegetation area fraction
-    * `real(kind=kind_phys)`: units = frac
+    * `real(kind=kind_phys)`: units = fraction
 * `monin_obukhov_similarity_function_for_heat`: Monin obukhov similarity function for heat
     * `real(kind=kind_phys)`: units = 1
 * `monin_obukhov_similarity_function_for_momentum`: Monin obukhov similarity function for momentum
@@ -1578,7 +1578,7 @@ Variables related to the compute environment
 * `nonnegative_lwe_thickness_of_precipitation_amount_on_dynamics_timestep`: Nonnegative lwe thickness of precipitation amount on dynamics timestep
     * `real(kind=kind_phys)`: units = m
 * `normalized_soil_wetness_for_land_surface_model`: Normalized soil wetness for land surface model
-    * `real(kind=kind_phys)`: units = frac
+    * `real(kind=kind_phys)`: units = fraction
 * `number_of_snow_layers`: Number of snow layers
     * `real(kind=kind_phys)`: units = 1
 * `ocean_mixed_layer_thickness`: Ocean mixed layer thickness
@@ -1594,9 +1594,9 @@ Variables related to the compute environment
 * `reciprocal_of_obukhov_length`: Reciprocal of obukhov length
     * `real(kind=kind_phys)`: units = m-1
 * `sea_area_fraction`: Sea area fraction
-    * `real(kind=kind_phys)`: units = frac
+    * `real(kind=kind_phys)`: units = fraction
 * `sea_ice_area_fraction_of_sea_area_fraction`: Sea ice area fraction of sea area fraction
-    * `real(kind=kind_phys)`: units = frac
+    * `real(kind=kind_phys)`: units = fraction
 * `sea_ice_temperature`: Sea ice temperature
     * `real(kind=kind_phys)`: units = K
 * `sea_ice_thickness`: Sea ice thickness
@@ -1618,7 +1618,7 @@ Variables related to the compute environment
 * `slow_soil_pool_mass_content_of_carbon`: Slow soil pool mass content of carbon
     * `real(kind=kind_phys)`: units = g m-2
 * `surface_albedo_assuming_deep_snow_on_previous_timestep`: Surface albedo assuming deep snow on previous timestep
-    * `real(kind=kind_phys)`: units = frac
+    * `real(kind=kind_phys)`: units = fraction
 * `lwe_thickness_of_ice_in_surface_snow`: Lwe thickness of ice in surface snow
     * `real(kind=kind_phys)`: units = mm
 * `lwe_thickness_of_liquid_water_in_surface_snow`: Lwe thickness of liquid water in surface snow
@@ -1662,25 +1662,25 @@ Variables related to the compute environment
 * `molecular_sublayer_thickness_in_sea_water`: Molecular sublayer thickness in sea water
     * `real(kind=kind_phys)`: units = m
 * `surface_albedo_diffuse_nir_over_ice`: Surface albedo diffuse nir over ice
-    * `real(kind=kind_phys)`: units = frac
+    * `real(kind=kind_phys)`: units = fraction
 * `surface_albedo_diffuse_nir_over_land`: Surface albedo diffuse nir over land
-    * `real(kind=kind_phys)`: units = frac
+    * `real(kind=kind_phys)`: units = fraction
 * `surface_albedo_diffuse_visible_over_ice`: Surface albedo diffuse visible over ice
-    * `real(kind=kind_phys)`: units = frac
+    * `real(kind=kind_phys)`: units = fraction
 * `surface_albedo_diffuse_visible_over_land`: Surface albedo diffuse visible over land
-    * `real(kind=kind_phys)`: units = frac
+    * `real(kind=kind_phys)`: units = fraction
 * `surface_albedo_direct_nir_over_ice`: Surface albedo direct nir over ice
-    * `real(kind=kind_phys)`: units = frac
+    * `real(kind=kind_phys)`: units = fraction
 * `surface_albedo_direct_nir_over_land`: Surface albedo direct nir over land
-    * `real(kind=kind_phys)`: units = frac
+    * `real(kind=kind_phys)`: units = fraction
 * `surface_albedo_direct_visible_over_ice`: Surface albedo direct visible over ice
-    * `real(kind=kind_phys)`: units = frac
+    * `real(kind=kind_phys)`: units = fraction
 * `surface_albedo_direct_visible_over_land`: Surface albedo direct visible over land
-    * `real(kind=kind_phys)`: units = frac
+    * `real(kind=kind_phys)`: units = fraction
 * `surface_diffused_shortwave_albedo_over_ice`: Surface diffused shortwave albedo over ice
-    * `real(kind=kind_phys)`: units = frac
+    * `real(kind=kind_phys)`: units = fraction
 * `surface_diffused_shortwave_albedo_over_land`: Surface diffused shortwave albedo over land
-    * `real(kind=kind_phys)`: units = frac
+    * `real(kind=kind_phys)`: units = fraction
 * `surface_drag_coefficient_for_heat_and_moisture_for_noahmp`: Surface drag coefficient for heat and moisture for noahmp
     * `real(kind=kind_phys)`: units = 1
 * `surface_drag_coefficient_for_momentum_for_noahmp`: Surface drag coefficient for momentum for noahmp
@@ -1700,9 +1700,9 @@ Variables related to the compute environment
 * `surface_upward_latent_heat_flux`: Surface upward latent heat flux
     * `real(kind=kind_phys)`: units = W m-2
 * `surface_longwave_emissivity_over_ice`: Surface longwave emissivity over ice
-    * `real(kind=kind_phys)`: units = frac
+    * `real(kind=kind_phys)`: units = fraction
 * `surface_longwave_emissivity_over_land`: Surface longwave emissivity over land
-    * `real(kind=kind_phys)`: units = frac
+    * `real(kind=kind_phys)`: units = fraction
 * `surface_roughness_length`: Surface roughness length
     * `real(kind=kind_phys)`: units = cm
 * `surface_roughness_length_from_wave_model`: Surface roughness length from wave model
@@ -1718,11 +1718,11 @@ Variables related to the compute environment
 * `surface_skin_temperature_over_land`: Surface skin temperature over land
     * `real(kind=kind_phys)`: units = K
 * `surface_snow_area_fraction_over_ice`: Surface snow area fraction over ice
-    * `real(kind=kind_phys)`: units = frac
+    * `real(kind=kind_phys)`: units = fraction
 * `surface_snow_area_fraction_over_land`: Surface snow area fraction over land
-    * `real(kind=kind_phys)`: units = frac
+    * `real(kind=kind_phys)`: units = fraction
 * `surface_snow_free_albedo_over_land`: Surface snow free albedo over land
-    * `real(kind=kind_phys)`: units = frac
+    * `real(kind=kind_phys)`: units = fraction
 * `lwe_surface_snow`: Lwe surface snow
     * `real(kind=kind_phys)`: units = mm
 * `surface_specific_humidity`: Surface specific humidity
@@ -1740,21 +1740,21 @@ Variables related to the compute environment
 * `surface_snow_amount_over_land`: Surface snow amount over land
     * `real(kind=kind_phys)`: units = kg m-2
 * `upper_bound_of_max_albedo_assuming_deep_snow`: Upper bound of max albedo assuming deep snow
-    * `real(kind=kind_phys)`: units = frac
+    * `real(kind=kind_phys)`: units = fraction
 * `vegetation_area_fraction`: Vegetation area fraction
-    * `real(kind=kind_phys)`: units = frac
+    * `real(kind=kind_phys)`: units = fraction
 * `canopy_temperature`: Canopy temperature
     * `real(kind=kind_phys)`: units = K
 * `volume_fraction_of_frozen_soil_moisture_for_land_surface_model`: Volume fraction of frozen soil moisture for land surface model
-    * `real(kind=kind_phys)`: units = frac
+    * `real(kind=kind_phys)`: units = fraction
 * `volume_fraction_of_condensed_water_in_soil`: Volume fraction of condensed water in soil
-    * `real(kind=kind_phys)`: units = frac
+    * `real(kind=kind_phys)`: units = fraction
 * `volume_fraction_of_soil_moisture_for_land_surface_model`: Volume fraction of soil moisture for land surface model
-    * `real(kind=kind_phys)`: units = frac
+    * `real(kind=kind_phys)`: units = fraction
 * `volume_fraction_of_unfrozen_water_in_soil`: Volume fraction of unfrozen water in soil
-    * `real(kind=kind_phys)`: units = frac
+    * `real(kind=kind_phys)`: units = fraction
 * `volume_fraction_of_unfrozen_soil_moisture_for_land_surface_model`: Volume fraction of unfrozen soil moisture for land surface model
-    * `real(kind=kind_phys)`: units = frac
+    * `real(kind=kind_phys)`: units = fraction
 * `lwe_thickness_of_surface_snow_amount`: Lwe thickness of surface snow amount
     * `real(kind=kind_phys)`: units = mm
 * `water_storage_in_aquifer`: Water storage in aquifer
@@ -1811,7 +1811,7 @@ Variables related to the compute environment
 * `cumulative_surface_y_momentum_flux_for_coupling_multiplied_by_timestep`: Cumulative surface y momentum flux for coupling multiplied by timestep
     * `real(kind=kind_phys)`: units = Pa s
 * `cellular_automata_area_fraction_for_deep_convection_from_coupled_process`: Cellular automata area fraction for deep convection from coupled process
-    * `real(kind=kind_phys)`: units = frac
+    * `real(kind=kind_phys)`: units = fraction
 * `atmosphere_heat_diffusivity_for_chemistry_coupling`: Atmosphere heat diffusivity for chemistry coupling
     * `real(kind=kind_phys)`: units = m2 s-1
 * `specific_humidity_at_2m_for_coupling`: Specific humidity at 2m for coupling
@@ -1893,9 +1893,9 @@ Variables related to the compute environment
 * `surface_net_downwelling_shortwave_flux_on_radiation_timestep`: Surface net downwelling shortwave flux on radiation timestep
     * `real(kind=kind_phys)`: units = W m-2
 * `surface_nir_albedo_diffuse_rad_for_coupling`: Surface nir albedo diffuse rad for coupling
-    * `real(kind=kind_phys)`: units = frac
+    * `real(kind=kind_phys)`: units = fraction
 * `surface_nir_albedo_direct_rad_for_coupling`: Surface nir albedo direct rad for coupling
-    * `real(kind=kind_phys)`: units = frac
+    * `real(kind=kind_phys)`: units = fraction
 * `lwe_surface_snow_from_coupled_process`: Lwe surface snow from coupled process
     * `real(kind=kind_phys)`: units = m
 * `surface_upward_latent_heat_flux_from_coupled_process`: Surface upward latent heat flux from coupled process
@@ -1915,9 +1915,9 @@ Variables related to the compute environment
 * `surface_upwelling_longwave_flux_on_radiation_timestep`: Surface upwelling longwave flux on radiation timestep
     * `real(kind=kind_phys)`: units = W m-2
 * `surface_vis_albedo_diffuse_rad_for_coupling`: Surface vis albedo diffuse rad for coupling
-    * `real(kind=kind_phys)`: units = frac
+    * `real(kind=kind_phys)`: units = fraction
 * `surface_vis_albedo_direct_rad_for_coupling`: Surface vis albedo direct rad for coupling
-    * `real(kind=kind_phys)`: units = frac
+    * `real(kind=kind_phys)`: units = fraction
 * `surface_x_momentum_flux_from_coupled_process`: Surface x momentum flux from coupled process
     * `real(kind=kind_phys)`: units = Pa
 * `surface_y_momentum_flux_from_coupled_process`: Surface y momentum flux from coupled process
@@ -1929,7 +1929,7 @@ Variables related to the compute environment
 * `updated_tendency_of_air_temperature_due_to_longwave_heating_on_physics_timestep`: Updated tendency of air temperature due to longwave heating on physics timestep
     * `real(kind=kind_phys)`: units = K s-1
 * `cellular_automata_vertical_weight`: Cellular automata vertical weight
-    * `real(kind=kind_phys)`: units = frac
+    * `real(kind=kind_phys)`: units = fraction
 * `shum_weights_from_coupled_process`: Shum weights from coupled process
     * `real(kind=kind_phys)`: units = 1
 * `skeb_x_wind_weights_from_coupled_process`: Skeb x wind weights from coupled process
@@ -1993,7 +1993,7 @@ Variables related to the compute environment
     * `real(kind=kind_phys)`: units = m s-1
 ## GFS_typedefs_GFS_cldprop_type
 * `convective_cloud_area_fraction_between_sw_radiation_calls_from_cnvc90`: Convective cloud area fraction between sw radiation calls from cnvc90
-    * `real(kind=kind_phys)`: units = frac
+    * `real(kind=kind_phys)`: units = fraction
 * `pressure_at_convective_cloud_base_between_sw_radiation_calls_from_cnvc90`: Pressure at convective cloud base between sw radiation calls from cnvc90
     * `real(kind=kind_phys)`: units = Pa
 * `pressure_at_convective_cloud_top_between_sw_radiation_calls_from_cnvc90`: Pressure at convective cloud top between sw radiation calls from cnvc90
@@ -2006,9 +2006,9 @@ Variables related to the compute environment
 * `surface_lw_fluxes_assuming_total_and_clear_sky_on_radiation_timestep`: Surface lw fluxes assuming total and clear sky on radiation timestep
     * `sfcflw_type(kind=)`: units = W m-2
 * `surface_albedo_for_diffused_shortwave_on_radiation_timestep`: Surface albedo for diffused shortwave on radiation timestep
-    * `real(kind=kind_phys)`: units = frac
+    * `real(kind=kind_phys)`: units = fraction
 * `surface_longwave_emissivity`: Surface longwave emissivity
-    * `real(kind=kind_phys)`: units = frac
+    * `real(kind=kind_phys)`: units = fraction
 * `air_temperature_at_surface_adjacent_layer_on_radiation_timestep`: Air temperature at surface adjacent layer on radiation timestep
     * `real(kind=kind_phys)`: units = K
 * `surface_sw_fluxes_assuming_total_and_clear_sky_on_radiation_timestep`: Surface sw fluxes assuming total and clear sky on radiation timestep
@@ -2084,7 +2084,7 @@ Variables related to the compute environment
 * `mass_number_concentration_of_cloud_liquid_water_particles_in_air_of_new_state`: Mass number concentration of cloud liquid water particles in air of new state
     * `real(kind=kind_phys)`: units = kg-1
 * `nonconvective_cloud_area_fraction_in_atmosphere_layer_of_new_state`: Nonconvective cloud area fraction in atmosphere layer of new state
-    * `real(kind=kind_phys)`: units = frac
+    * `real(kind=kind_phys)`: units = fraction
 * `graupel_mixing_ratio_wrt_moist_air_of_new_state`: Graupel mixing ratio wrt moist air of new state
     * `real(kind=kind_phys)`: units = kg kg-1
 * `mass_number_concentration_of_graupel_of_new_state`: Mass number concentration of graupel of new state
diff --git a/StandardNamesRules.rst b/StandardNamesRules.rst
index 6d0f7b9..a067c4c 100644
--- a/StandardNamesRules.rst
+++ b/StandardNamesRules.rst
@@ -569,24 +569,26 @@ Units
 
 #. For dimensionless variables, the following units can be used:
 
-+------------------------+-------------------------------------------------------------------------------------+
-| **Unit**               |  **Use case**                                                                       |
-+========================+=====================================================================================+
-| count                  | integers that describe the dimension/length of an array                             |
-+------------------------+-------------------------------------------------------------------------------------+
-| flag                   | logicals/booleans that can be either true or false                                  |
-+------------------------+-------------------------------------------------------------------------------------+
-| index                  | integers that can be an index in an array                                           |
-+------------------------+-------------------------------------------------------------------------------------+
-| kg kg-1                | mass mixing ratios                                                                  |
-+------------------------+-------------------------------------------------------------------------------------+
-| m3 m-3                 | volume fraction (e.g. for soil moisture)                                            |
-+------------------------+-------------------------------------------------------------------------------------+
-| mol mol-1              | molar mixing ratios (also volumetric mixing ratio for gases)                        |
-+------------------------+-------------------------------------------------------------------------------------+
-| none                   | strings and character arrays                                                        |
-+------------------------+-------------------------------------------------------------------------------------+
-| 1                      | any number (integer, real, complex), e.g. fractions, scaling factors, ...           |
-+------------------------+-------------------------------------------------------------------------------------+
-| percent                | fractions etc. expressed in percent, ranging from 0 to 100%                         |
-+------------------------+-------------------------------------------------------------------------------------+
++------------------------+-----------------------------------------------------------------------------------------------+
+| **Unit**               |  **Use case**                                                                                 |
++========================+===============================================================================================+
+| count                  | integers that describe the dimension/length of an array                                       |
++------------------------+-----------------------------------------------------------------------------------------------+
+| flag                   | logicals/booleans that can be either true or false                                            |
++------------------------+-----------------------------------------------------------------------------------------------+
+| index                  | integers that can be an index in an array                                                     |
++------------------------+-----------------------------------------------------------------------------------------------+
+| kg kg-1                | mass mixing ratios                                                                            |
++------------------------+-----------------------------------------------------------------------------------------------+
+| m3 m-3                 | volume fraction (e.g. for soil moisture)                                                      |
++------------------------+-----------------------------------------------------------------------------------------------+
+| mol mol-1              | molar mixing ratios (also volumetric mixing ratio for gases)                                  |
++------------------------+-----------------------------------------------------------------------------------------------+
+| none                   | strings and character arrays                                                                  |
++------------------------+-----------------------------------------------------------------------------------------------+
+| fraction               | fractions not listed above, typically valid in the range [0,1]                                |
++------------------------+-----------------------------------------------------------------------------------------------+
+| percent                | fractions expressed in percent, typically ranging from 0% to 100%                             |
++------------------------+-----------------------------------------------------------------------------------------------+
+| 1                      | any number (integer, real, complex) not listed above, e.g. scaling factors, error codes, etc. |
++------------------------+-----------------------------------------------------------------------------------------------+
diff --git a/standard_names.xml b/standard_names.xml
index 242c52e..c8a6f06 100644
--- a/standard_names.xml
+++ b/standard_names.xml
@@ -409,10 +409,10 @@
     <standard_name
         name="nonconvective_cloud_area_fraction_in_atmosphere_layer"
         long_name="cloud area fraction in atmosphere layer excluding clouds produced by the convective schemes">
-      <type kind="kind_phys" units="1">real</type>
+      <type kind="kind_phys" units="fraction">real</type>
     </standard_name>
     <standard_name name="relative_humidity">
-      <type kind="kind_phys" units="1">real</type>
+      <type kind="kind_phys" units="fraction">real</type>
     </standard_name>
     <standard_name name="gravitational_acceleration">
       <type kind="kind_phys" units="m s-2">real</type>
@@ -782,7 +782,7 @@
          <type kind="kind_phys" units="1">real</type>
       </standard_name>
       <standard_name name="chemical_tracer_scavenging_fractions">
-         <type kind="kind_phys" units="1">real</type>
+         <type kind="kind_phys" units="fraction">real</type>
       </standard_name>
       <standard_name name="cloud_condensate_detrainment_coefficient">
          <type kind="kind_phys" units="1">real</type>
@@ -800,13 +800,13 @@
          <type kind="kind_phys" units="1">real</type>
       </standard_name>
       <standard_name name="critical_relative_humidity_at_top_of_atmosphere_boundary_layer">
-         <type kind="kind_phys" units="frac">real</type>
+         <type kind="kind_phys" units="fraction">real</type>
       </standard_name>
       <standard_name name="critical_relative_humidity_at_surface">
-         <type kind="kind_phys" units="frac">real</type>
+         <type kind="kind_phys" units="fraction">real</type>
       </standard_name>
       <standard_name name="critical_relative_humidity_at_toa">
-         <type kind="kind_phys" units="frac">real</type>
+         <type kind="kind_phys" units="fraction">real</type>
       </standard_name>
       <standard_name name="date_and_time_at_model_initialization_in_iso_order">
          <type kind="" units="1">integer</type>
@@ -863,13 +863,13 @@
          <type kind="" units="flag">logical</type>
       </standard_name>
       <standard_name name="downdraft_area_fraction_in_scale_aware_tke_moist_edmf_pbl_scheme">
-         <type kind="kind_phys" units="1">real</type>
+         <type kind="kind_phys" units="fraction">real</type>
       </standard_name>
       <standard_name name="downdraft_fraction_reaching_surface_over_land_for_deep_convection">
-         <type kind="kind_phys" units="frac">real</type>
+         <type kind="kind_phys" units="fraction">real</type>
       </standard_name>
       <standard_name name="downdraft_fraction_reaching_surface_over_water_for_deep_convection">
-         <type kind="kind_phys" units="frac">real</type>
+         <type kind="kind_phys" units="fraction">real</type>
       </standard_name>
       <standard_name name="control_for_edmf_in_mellor_yamada_nakanishi_niino_pbl_scheme">
          <type kind="" units="1">integer</type>
@@ -899,7 +899,7 @@
          <type kind="kind_phys" units="radian">real</type>
       </standard_name>
       <standard_name name="relative_humidity_threshold_for_condensation">
-         <type kind="kind_phys" units="1">real</type>
+         <type kind="kind_phys" units="fraction">real</type>
       </standard_name>
       <standard_name name="do_arakawa_wu_downdrafts_for_deep_convection">
          <type kind="" units="flag">logical</type>
@@ -1583,7 +1583,7 @@
          <type kind="kind_phys" units="days">real</type>
       </standard_name>
       <standard_name name="min_lake_ice_area_fraction">
-         <type kind="kind_phys" units="frac">real</type>
+         <type kind="kind_phys" units="fraction">real</type>
       </standard_name>
       <standard_name name="multiplicative_tuning_parameter_for_reduced_latent_heat_flux_due_to_canopy_heat_storage">
          <type kind="kind_phys" units="1">real</type>
@@ -1598,7 +1598,7 @@
          <type kind="kind_phys" units="variable">real</type>
       </standard_name>
       <standard_name name="max_critical_relative_humidity">
-         <type kind="kind_phys" units="frac">real</type>
+         <type kind="kind_phys" units="fraction">real</type>
       </standard_name>
       <standard_name name="max_grid_scale">
          <type kind="kind_phys" units="m2 rad-2">real</type>
@@ -1613,7 +1613,7 @@
          <type kind="kind_phys" units="um">real</type>
       </standard_name>
       <standard_name name="bergeron_findeisen_process_efficiency_factor">
-         <type kind="kind_phys" units="frac">real</type>
+         <type kind="kind_phys" units="fraction">real</type>
       </standard_name>
       <standard_name name="relative_variance_of_subgrid_cloud_condensate_distribution">
          <type kind="kind_phys" units="kg2 kg-2">real</type>
@@ -1670,7 +1670,7 @@
          <type kind="kind_phys" units="kg kg-1">real</type>
       </standard_name>
       <standard_name name="relative_humidity_threshold_for_ice_nucleation">
-         <type kind="kind_phys" units="1">real</type>
+         <type kind="kind_phys" units="fraction">real</type>
       </standard_name>
       <standard_name name="timescale_for_autoconversion_to_snow">
          <type kind="kind_phys" units="s">real</type>
@@ -1682,7 +1682,7 @@
          <type kind="len=16" units="none">character</type>
       </standard_name>
       <standard_name name="minimum_large_ice_fraction">
-         <type kind="kind_phys" units="frac">real</type>
+         <type kind="kind_phys" units="fraction">real</type>
       </standard_name>
       <standard_name name="minimum_pressure_in_rrtmgp">
          <type kind="kind_phys" units="Pa">real</type>
@@ -1703,10 +1703,10 @@
          <type kind="" units="1">integer</type>
       </standard_name>
       <standard_name name="momentum_transport_reduction_factor_due_to_pressure_gradient_force_for_deep_convection">
-         <type kind="kind_phys" units="frac">real</type>
+         <type kind="kind_phys" units="fraction">real</type>
       </standard_name>
       <standard_name name="momentum_transport_reduction_factor_due_to_pressure_gradient_force_for_shallow_convection">
-         <type kind="kind_phys" units="frac">real</type>
+         <type kind="kind_phys" units="fraction">real</type>
       </standard_name>
       <standard_name name="mpi_communicator">
          <type kind="" units="index">integer</type>
@@ -1877,10 +1877,10 @@
          <type kind="kind_phys" units="m-1">real</type>
       </standard_name>
       <standard_name name="rain_evaporation_coefficient_over_ocean_for_deep_convection">
-         <type kind="kind_phys" units="frac">real</type>
+         <type kind="kind_phys" units="fraction">real</type>
       </standard_name>
       <standard_name name="rain_evaporation_coefficient_over_land_for_deep_convection">
-         <type kind="kind_phys" units="frac">real</type>
+         <type kind="kind_phys" units="fraction">real</type>
       </standard_name>
       <standard_name name="filename_of_rrtmgp_longwave_cloud_optics_coefficients">
          <type kind="len=128" units="none">character</type>
@@ -1898,7 +1898,7 @@
          <type kind="" units="flag">logical</type>
       </standard_name>
       <standard_name name="min_sea_ice_area_fraction">
-         <type kind="kind_phys" units="frac">real</type>
+         <type kind="kind_phys" units="fraction">real</type>
       </standard_name>
       <standard_name name="forecast_time_in_seconds">
          <type kind="kind_phys" units="s">real</type>
@@ -1985,7 +1985,7 @@
          <type kind="" units="flag">logical</type>
       </standard_name>
       <standard_name name="updraft_area_fraction_in_scale_aware_tke_moist_edmf_pbl_scheme">
-         <type kind="kind_phys" units="1">real</type>
+         <type kind="kind_phys" units="fraction">real</type>
       </standard_name>
       <standard_name name="tunable_parameter_1_for_maximum_cloud_base_updraft_velocity_in_chikira_sugiyama_deep_convection">
          <type kind="kind_phys" units="m s-1">real</type>
@@ -2112,13 +2112,13 @@
          <type kind="kind_phys" units="kg m-2 s-1">real</type>
       </standard_name>
       <standard_name name="cloud_fraction_for_mg">
-         <type kind="kind_phys" units="frac">real</type>
+         <type kind="kind_phys" units="fraction">real</type>
       </standard_name>
       <standard_name name="counter_for_grell_freitas_convection">
          <type kind="" units="count">integer</type>
       </standard_name>
       <standard_name name="convective_cloud_area_fraction">
-         <type kind="kind_phys" units="frac">real</type>
+         <type kind="kind_phys" units="fraction">real</type>
       </standard_name>
       <standard_name name="convective_cloud_condensate_mixing_ratio_wrt_moist_air">
          <type kind="kind_phys" units="kg kg-1">real</type>
@@ -2202,7 +2202,7 @@
          <type kind="kind_phys" units="1">real</type>
       </standard_name>
       <standard_name name="subgrid_scale_cloud_area_fraction_in_atmosphere_layer">
-         <type kind="kind_phys" units="frac">real</type>
+         <type kind="kind_phys" units="fraction">real</type>
       </standard_name>
       <standard_name name="subgrid_scale_cloud_ice_mixing_ratio_wrt_moist_air">
          <type kind="kind_phys" units="kg kg-1">real</type>
@@ -2211,7 +2211,7 @@
          <type kind="kind_phys" units="kg kg-1">real</type>
       </standard_name>
       <standard_name name="subgrid_scale_cloud_fraction_from_shoc">
-         <type kind="kind_phys" units="frac">real</type>
+         <type kind="kind_phys" units="fraction">real</type>
       </standard_name>
       <standard_name name="surface_air_pressure_on_previous_timestep">
          <type kind="kind_phys" units="Pa">real</type>
@@ -2276,10 +2276,10 @@
    </section>
    <section name="GFS_typedefs_GFS_sfcprop_type">
       <standard_name name="wet_canopy_area_fraction">
-         <type kind="kind_phys" units="1">real</type>
+         <type kind="kind_phys" units="fraction">real</type>
       </standard_name>
       <standard_name name="baseline_surface_longwave_emissivity">
-         <type kind="kind_phys" units="frac">real</type>
+         <type kind="kind_phys" units="fraction">real</type>
       </standard_name>
       <standard_name name="baseline_surface_roughness_length">
          <type kind="kind_phys" units="m">real</type>
@@ -2357,10 +2357,10 @@
          <type kind="kind_phys" units="1">real</type>
       </standard_name>
       <standard_name name="strong_cosz_area_fraction">
-         <type kind="kind_phys" units="frac">real</type>
+         <type kind="kind_phys" units="fraction">real</type>
       </standard_name>
       <standard_name name="weak_cosz_area_fraction">
-         <type kind="kind_phys" units="frac">real</type>
+         <type kind="kind_phys" units="fraction">real</type>
       </standard_name>
       <standard_name name="free_convection_layer_thickness_in_sea_water">
          <type kind="kind_phys" units="m">real</type>
@@ -2390,7 +2390,7 @@
          <type kind="kind_phys" units="K m s-1">real</type>
       </standard_name>
       <standard_name name="lake_area_fraction">
-         <type kind="kind_phys" units="frac">real</type>
+         <type kind="kind_phys" units="fraction">real</type>
       </standard_name>
       <standard_name name="lake_depth">
          <type kind="kind_phys" units="m">real</type>
@@ -2399,7 +2399,7 @@
          <type kind="kind_phys" units="mm">real</type>
       </standard_name>
       <standard_name name="land_area_fraction">
-         <type kind="kind_phys" units="frac">real</type>
+         <type kind="kind_phys" units="fraction">real</type>
       </standard_name>
       <standard_name name="depth_from_snow_surface_at_bottom_interface">
          <type kind="kind_phys" units="m">real</type>
@@ -2426,22 +2426,22 @@
          <type kind="kind_phys" units="m">real</type>
       </standard_name>
       <standard_name name="max_vegetation_area_fraction">
-         <type kind="kind_phys" units="frac">real</type>
+         <type kind="kind_phys" units="fraction">real</type>
       </standard_name>
       <standard_name name="nir_albedo_strong_cosz">
-         <type kind="kind_phys" units="frac">real</type>
+         <type kind="kind_phys" units="fraction">real</type>
       </standard_name>
       <standard_name name="nir_albedo_weak_cosz">
-         <type kind="kind_phys" units="frac">real</type>
+         <type kind="kind_phys" units="fraction">real</type>
       </standard_name>
       <standard_name name="vis_albedo_strong_cosz">
-         <type kind="kind_phys" units="frac">real</type>
+         <type kind="kind_phys" units="fraction">real</type>
       </standard_name>
       <standard_name name="vis_albedo_weak_cosz">
-         <type kind="kind_phys" units="frac">real</type>
+         <type kind="kind_phys" units="fraction">real</type>
       </standard_name>
       <standard_name name="min_vegetation_area_fraction">
-         <type kind="kind_phys" units="frac">real</type>
+         <type kind="kind_phys" units="fraction">real</type>
       </standard_name>
       <standard_name name="monin_obukhov_similarity_function_for_heat">
          <type kind="kind_phys" units="1">real</type>
@@ -2456,7 +2456,7 @@
          <type kind="kind_phys" units="m">real</type>
       </standard_name>
       <standard_name name="normalized_soil_wetness_for_land_surface_model">
-         <type kind="kind_phys" units="frac">real</type>
+         <type kind="kind_phys" units="fraction">real</type>
       </standard_name>
       <standard_name name="number_of_snow_layers">
          <type kind="kind_phys" units="1">real</type>
@@ -2480,10 +2480,10 @@
          <type kind="kind_phys" units="m-1">real</type>
       </standard_name>
       <standard_name name="sea_area_fraction">
-         <type kind="kind_phys" units="frac">real</type>
+         <type kind="kind_phys" units="fraction">real</type>
       </standard_name>
       <standard_name name="sea_ice_area_fraction_of_sea_area_fraction">
-         <type kind="kind_phys" units="frac">real</type>
+         <type kind="kind_phys" units="fraction">real</type>
       </standard_name>
       <standard_name name="sea_ice_temperature">
          <type kind="kind_phys" units="K">real</type>
@@ -2516,7 +2516,7 @@
          <type kind="kind_phys" units="g m-2">real</type>
       </standard_name>
       <standard_name name="surface_albedo_assuming_deep_snow_on_previous_timestep">
-         <type kind="kind_phys" units="frac">real</type>
+         <type kind="kind_phys" units="fraction">real</type>
       </standard_name>
       <standard_name name="lwe_thickness_of_ice_in_surface_snow">
          <type kind="kind_phys" units="mm">real</type>
@@ -2584,34 +2584,34 @@
          <type kind="kind_phys" units="m">real</type>
       </standard_name>
       <standard_name name="surface_albedo_diffuse_nir_over_ice">
-         <type kind="kind_phys" units="frac">real</type>
+         <type kind="kind_phys" units="fraction">real</type>
       </standard_name>
       <standard_name name="surface_albedo_diffuse_nir_over_land">
-         <type kind="kind_phys" units="frac">real</type>
+         <type kind="kind_phys" units="fraction">real</type>
       </standard_name>
       <standard_name name="surface_albedo_diffuse_visible_over_ice">
-         <type kind="kind_phys" units="frac">real</type>
+         <type kind="kind_phys" units="fraction">real</type>
       </standard_name>
       <standard_name name="surface_albedo_diffuse_visible_over_land">
-         <type kind="kind_phys" units="frac">real</type>
+         <type kind="kind_phys" units="fraction">real</type>
       </standard_name>
       <standard_name name="surface_albedo_direct_nir_over_ice">
-         <type kind="kind_phys" units="frac">real</type>
+         <type kind="kind_phys" units="fraction">real</type>
       </standard_name>
       <standard_name name="surface_albedo_direct_nir_over_land">
-         <type kind="kind_phys" units="frac">real</type>
+         <type kind="kind_phys" units="fraction">real</type>
       </standard_name>
       <standard_name name="surface_albedo_direct_visible_over_ice">
-         <type kind="kind_phys" units="frac">real</type>
+         <type kind="kind_phys" units="fraction">real</type>
       </standard_name>
       <standard_name name="surface_albedo_direct_visible_over_land">
-         <type kind="kind_phys" units="frac">real</type>
+         <type kind="kind_phys" units="fraction">real</type>
       </standard_name>
       <standard_name name="surface_diffused_shortwave_albedo_over_ice">
-         <type kind="kind_phys" units="frac">real</type>
+         <type kind="kind_phys" units="fraction">real</type>
       </standard_name>
       <standard_name name="surface_diffused_shortwave_albedo_over_land">
-         <type kind="kind_phys" units="frac">real</type>
+         <type kind="kind_phys" units="fraction">real</type>
       </standard_name>
       <standard_name name="surface_drag_coefficient_for_heat_and_moisture_for_noahmp">
          <type kind="kind_phys" units="1">real</type>
@@ -2641,10 +2641,10 @@
          <type kind="kind_phys" units="W m-2">real</type>
       </standard_name>
       <standard_name name="surface_longwave_emissivity_over_ice">
-         <type kind="kind_phys" units="frac">real</type>
+         <type kind="kind_phys" units="fraction">real</type>
       </standard_name>
       <standard_name name="surface_longwave_emissivity_over_land">
-         <type kind="kind_phys" units="frac">real</type>
+         <type kind="kind_phys" units="fraction">real</type>
       </standard_name>
       <standard_name name="surface_roughness_length">
          <type kind="kind_phys" units="cm">real</type>
@@ -2668,13 +2668,13 @@
          <type kind="kind_phys" units="K">real</type>
       </standard_name>
       <standard_name name="surface_snow_area_fraction_over_ice">
-         <type kind="kind_phys" units="frac">real</type>
+         <type kind="kind_phys" units="fraction">real</type>
       </standard_name>
       <standard_name name="surface_snow_area_fraction_over_land">
-         <type kind="kind_phys" units="frac">real</type>
+         <type kind="kind_phys" units="fraction">real</type>
       </standard_name>
       <standard_name name="surface_snow_free_albedo_over_land">
-         <type kind="kind_phys" units="frac">real</type>
+         <type kind="kind_phys" units="fraction">real</type>
       </standard_name>
       <standard_name name="lwe_surface_snow">
          <type kind="kind_phys" units="mm">real</type>
@@ -2701,28 +2701,28 @@
          <type kind="kind_phys" units="kg m-2">real</type>
       </standard_name>
       <standard_name name="upper_bound_of_max_albedo_assuming_deep_snow">
-         <type kind="kind_phys" units="frac">real</type>
+         <type kind="kind_phys" units="fraction">real</type>
       </standard_name>
       <standard_name name="vegetation_area_fraction">
-         <type kind="kind_phys" units="frac">real</type>
+         <type kind="kind_phys" units="fraction">real</type>
       </standard_name>
       <standard_name name="canopy_temperature">
          <type kind="kind_phys" units="K">real</type>
       </standard_name>
       <standard_name name="volume_fraction_of_frozen_soil_moisture_for_land_surface_model">
-         <type kind="kind_phys" units="frac">real</type>
+         <type kind="kind_phys" units="fraction">real</type>
       </standard_name>
       <standard_name name="volume_fraction_of_condensed_water_in_soil">
-         <type kind="kind_phys" units="frac">real</type>
+         <type kind="kind_phys" units="fraction">real</type>
       </standard_name>
       <standard_name name="volume_fraction_of_soil_moisture_for_land_surface_model">
-         <type kind="kind_phys" units="frac">real</type>
+         <type kind="kind_phys" units="fraction">real</type>
       </standard_name>
       <standard_name name="volume_fraction_of_unfrozen_water_in_soil">
-         <type kind="kind_phys" units="frac">real</type>
+         <type kind="kind_phys" units="fraction">real</type>
       </standard_name>
       <standard_name name="volume_fraction_of_unfrozen_soil_moisture_for_land_surface_model">
-         <type kind="kind_phys" units="frac">real</type>
+         <type kind="kind_phys" units="fraction">real</type>
       </standard_name>
       <standard_name name="lwe_thickness_of_surface_snow_amount">
          <type kind="kind_phys" units="mm">real</type>
@@ -2808,7 +2808,7 @@
          <type kind="kind_phys" units="Pa s">real</type>
       </standard_name>
       <standard_name name="cellular_automata_area_fraction_for_deep_convection_from_coupled_process">
-         <type kind="kind_phys" units="frac">real</type>
+         <type kind="kind_phys" units="fraction">real</type>
       </standard_name>
       <standard_name name="atmosphere_heat_diffusivity_for_chemistry_coupling">
          <type kind="kind_phys" units="m2 s-1">real</type>
@@ -2931,10 +2931,10 @@
          <type kind="kind_phys" units="W m-2">real</type>
       </standard_name>
       <standard_name name="surface_nir_albedo_diffuse_rad_for_coupling">
-         <type kind="kind_phys" units="frac">real</type>
+         <type kind="kind_phys" units="fraction">real</type>
       </standard_name>
       <standard_name name="surface_nir_albedo_direct_rad_for_coupling">
-         <type kind="kind_phys" units="frac">real</type>
+         <type kind="kind_phys" units="fraction">real</type>
       </standard_name>
       <standard_name name="lwe_surface_snow_from_coupled_process">
          <type kind="kind_phys" units="m">real</type>
@@ -2964,10 +2964,10 @@
          <type kind="kind_phys" units="W m-2">real</type>
       </standard_name>
       <standard_name name="surface_vis_albedo_diffuse_rad_for_coupling">
-         <type kind="kind_phys" units="frac">real</type>
+         <type kind="kind_phys" units="fraction">real</type>
       </standard_name>
       <standard_name name="surface_vis_albedo_direct_rad_for_coupling">
-         <type kind="kind_phys" units="frac">real</type>
+         <type kind="kind_phys" units="fraction">real</type>
       </standard_name>
       <standard_name name="surface_x_momentum_flux_from_coupled_process">
          <type kind="kind_phys" units="Pa">real</type>
@@ -2985,7 +2985,7 @@
          <type kind="kind_phys" units="K s-1">real</type>
       </standard_name>
       <standard_name name="cellular_automata_vertical_weight">
-         <type kind="kind_phys" units="frac">real</type>
+         <type kind="kind_phys" units="fraction">real</type>
       </standard_name>
       <standard_name name="shum_weights_from_coupled_process">
          <type kind="kind_phys" units="1">real</type>
@@ -3082,7 +3082,7 @@
    </section>
    <section name="GFS_typedefs_GFS_cldprop_type">
       <standard_name name="convective_cloud_area_fraction_between_sw_radiation_calls_from_cnvc90">
-         <type kind="kind_phys" units="frac">real</type>
+         <type kind="kind_phys" units="fraction">real</type>
       </standard_name>
       <standard_name name="pressure_at_convective_cloud_base_between_sw_radiation_calls_from_cnvc90">
          <type kind="kind_phys" units="Pa">real</type>
@@ -3102,10 +3102,10 @@
          <type kind="" units="W m-2">sfcflw_type</type>
       </standard_name>
       <standard_name name="surface_albedo_for_diffused_shortwave_on_radiation_timestep">
-         <type kind="kind_phys" units="frac">real</type>
+         <type kind="kind_phys" units="fraction">real</type>
       </standard_name>
       <standard_name name="surface_longwave_emissivity">
-         <type kind="kind_phys" units="frac">real</type>
+         <type kind="kind_phys" units="fraction">real</type>
       </standard_name>
       <standard_name name="air_temperature_at_surface_adjacent_layer_on_radiation_timestep">
          <type kind="kind_phys" units="K">real</type>
@@ -3220,7 +3220,7 @@
          <type kind="kind_phys" units="kg-1">real</type>
       </standard_name>
       <standard_name name="nonconvective_cloud_area_fraction_in_atmosphere_layer_of_new_state">
-         <type kind="kind_phys" units="frac">real</type>
+         <type kind="kind_phys" units="fraction">real</type>
       </standard_name>
       <standard_name name="graupel_mixing_ratio_wrt_moist_air_of_new_state">
          <type kind="kind_phys" units="kg kg-1">real</type>