wrfout_to_cf.ncl - Variables

User selectable variables to be included in the CF output file.

General Information:

A large collection of variables are user selectable from within the NCL script and will be included in the CF output file.

The user selects as few or as many variables as the user desires. This provides flexibility to control the file sizes of WRF data.
Variables are grouped by category. The entire category can be selected and the selected variables within that category will be included in the CF file. A category can be excluded and all variables from that category will be excluded.
Variables in the vertical can be selected with the WRF eta vertical levels or using pressure levels
Some of the variables are dependent on the selected physics options. If in doubt, check the native wrfout file to see if the selected variable of interest is included.
There is a chance that some of the more obscure variables may need to be activated in the WRF Registry in order for them to be included in the wrfout files.

Two-Dimensional Near-surface/Surface Meteorology: out2dMet

CF	CMIP	long_name	standard_name	Units	Notes
`SST`		Sea-Surface Temperature	sea_surface_temperature	K
`T_sfc`		Temperature at the Surface	surface_temperature	K
`p_sfc`		Pressure at the Surface	surface_air_pressure	hPa
`slp`		Sea-Level Pressure	air_pressure_at_sea_level	hPa	Created using WRF-NCL procedures
`slp_b`		Sea-Level Pressure	air_pressure_at_sea_level	hPa	Calculated using lowest model level
`T_2m`		Temperature at 2 m	air_temperature	°C
`theta_2m`		Potential Temperature at 2 m	air_potential_temperature	K
`Td_2m`		Dewpoint Temperature at 2 m	dew_point_temperature	°C
`r_v_2m`		Water Vapor Mixing Ratio at 2 m	humidity_mixing_ratio	kg kg^-1
`q_2m`		Specific Humidity at 2 m	specific_humidity	kg kg^-1
`rh_2m`		Relative Humidity at 2 m	relative_humidity	%
`u_10m_gr`		u-Component of Wind at 10 m (grid)	eastward_wind	m s^-1
`v_10m_gr`		v-Component of Wind at 10 m (grid)	northward_wind	m s^-1
`u_10m_tr`		u-Component of Wind at 10 m (Earth)	eastward_wind	m s^-1
`v_10m_tr`		v-Component of Wind at 10 m (Earth)	northward_wind	m s^-1
`ws_10m`		Wind Speed at 10 m	wind_speed	m s^-1
`wd_10m`		Wind Direction at 10 m	wind_from_direction	degree
`precip_g`		Accumulated Total Grid Scale Precip.	large_scale_precipitation_amount	mm
`precip_c`		Accumulated Total Cumulus Precip.	convective_precipitation_amount	mm
`precip_fr`		Fraction of Frozen Non-convective Precipitation		1	Cannot identify a corresponding standard_name.
`dryairmass`		Total Dry Air Mass in Column		hPa	Cannot identify a corresponding standard_name.
`pblh`		PBL Height	atmosphere_boundary_layer_thickness	m
`rho`		Air Density at Lowest Model Level	air_density	kg m^-3

Three-Dimensional Upper-Level (model levels) Meteorology: outEta

CF	CMIP	long_name	standard_name	Units	Notes
`p_e`	Pressure	air_pressure	hPa
`Z_e`		Geopotential Height	geopotential_height	m
`T_e`		Temperature	air_temperature	K
`theta_e`		Potential Temperature	air_potential_temperature	K
`Td_e`		Dewpoint Temperature	dew_point_temperature	°C
`r_v_e`		Mixing Ratio - Water Vapor	humidity_mixing_ratio	kg kg^-1
`q_e`		Specific Humidity	specific_humidity	kg kg^-1
`rh_e`		Relative Humidity	relative_humidity	%	Calculated using lowest model level
`u_gr_e`		u-Component of Wind (grid)	eastward_wind	m s^-1
`v_gr_e`		v-Component of Wind (grid)	northward_wind	m s^-1
`u_tr_e`		u-Component of Wind (Earth)	eastward_wind	m s^-1
`v_tr_e`		v-Component of Wind (Earth)	northward_wind	m s^-1
`ws_e`		Wind Speed	wind_speed	m s^-1
`wd_e`		Wind Direction (Earth)	wind_from_direction	degree
`w_e`		w-Component of Wind	upward_wind	m s^-1
`pp_e`		Pressure-Perturbation		hPa	Cannot identify a corresponding standard_name.
`r_cloud`		Mixing Ratio - Cloud	mass_fraction_of_cloud_liquid_water_in_air	kg kg^-1
`r_rain`		Mixing Ratio - Rain	mass_fraction_of_rain_in_air	kg kg^-1
`r_ice`		Mixing Ratio - Ice	mass_fraction_of_cloud_ice_in_air	kg kg^-1
`r_snow`		Mixing Ratio - Snow	mass_fraction_of_snow_in_air	kg kg^-1
`r_graup`		Mixing Ratio - Graupel	mass_fraction_of_graupel_in_air	kg kg^-1
`pvo_e`		Potential Vorticity	potential_vorticity_of_atmosphere_layer	PVU	Units are not CF/UDUNITS compatible.
`avo_e`		Absolute Vorticity	atmosphere_absolute_vorticity	10^-5 s^-1

Three-Dimensional Upper-Level (pressure levels) Meteorology: outPressure

CF	CMIP	long_name	standard_name	Units	Notes
`Z_p`		Geopotential Height	geopotential_height	m
`T_p`		Temperature	air_temperature	K
`theta_p`		Potential Temperature	air_potential_temperature	K
`Td_p`		Dewpoint Temperature	dew_point_temperature	°C
`r_v_p`		Mixing Ratio - Water Vapor	humidity_mixing_ratio	kg kg^-1
`q_p`		Specific Humidity	specific_humidity	kg kg^-1
`rh_p`		Relative Humidity	relative_humidity	%	Calculated using lowest model level
`u_gr_p`		u-Component of Wind (grid)	eastward_wind	m s^-1
`v_gr_p`		v-Component of Wind (grid)	northward_wind	m s^-1
`u_tr_p`		u-Component of Wind (Earth)	eastward_wind	m s^-1
`v_tr_p`		v-Component of Wind (Earth)	northward_wind	m s^-1
`ws_p`		Wind Speed	wind_speed	m s^-1
`wd_p`		Wind Direction (Earth)	wind_from_direction	degree
`w_p`		w-Component of Wind	upward_wind	m s^-1
`pp_p`		Pressure-Perturbation		hPa	Cannot identify a corresponding standard_name.
`r_cloud_p`		Mixing Ratio - Cloud	mass_fraction_of_cloud_liquid_water_in_air	kg kg^-1
`r_rain_p`		Mixing Ratio - Rain	mass_fraction_of_rain_in_air	kg kg^-1
`r_ice_p`		Mixing Ratio - Ice	mass_fraction_of_cloud_ice_in_air	kg kg^-1
`r_snow_p`		Mixing Ratio - Snow	mass_fraction_of_snow_in_air	kg kg^-1
`r_graup_p`		Mixing Ratio - Graupel	mass_fraction_of_graupel_in_air	kg kg^-1
`pvo_p`		Potential Vorticity	potential_vorticity_of_atmosphere_layer	PVU	Units are not CF/UDUNITS compatible.
`avo_p`		Absolute Vorticity	atmosphere_absolute_vorticity	10^-5 s^-1

Two-Dimensional Surface Energy Budget / Radiation: out2dRadFlx

CF	CMIP	long_name	standard_name	Units	Notes
`SW_d`		Shortwave Flux - Downward - at surface - instant	surface_downwelling_shortwave_flux_in_air	W m^-2
`LW_d`		Longwave Flux - Downward - at surface - instant	surface_downwelling_longwave_flux_in_air	W m^-2
`SW_u`		Shortwave Flux - Upward - at surface - instant	surface_upwelling_shortwave_flux_in_air	W m^-2
`LW_u`		Longwave Flux - Upward - at surface - instant	surface_upwelling_longwave_flux_in_air	W m^-2
`LW_u_toa`		Longwave Flux - Upward - TOA	toa_outgoing_longwave_flux	W m^-2
`SW_d_acc`		Shortwave Flux - Downward - at surface - accumulated	surface_downwelling_shortwave_flux_in_air	J m^-2
`LW_d_acc`		Longwave Flux - Downward - at surface - accumulated	surface_downwelling_longwave_flux_in_air	J m^-2
`SW_u_acc`		Shortwave Flux - Upward - at surface - accumulated	surface_upwelling_shortwave_flux_in_air	J m^-2
`LW_u_acc`		Longwave Flux - Upward - at surface - accumulated	surface_upwelling_longwave_flux_in_air	J m^-2
`SW_d_toa_acc`		Shortwave Flux - Downward - TOA - accumulated	toa_incoming_shortwave_flux	J m^-2
`LW_d_toa_acc`		Longwave Flux - Downward - TOA - accumulated	toa_incoming_longwave_flux	J m^-2
`SW_u_toa_acc`		Shortwave Flux - Upward - TOA - accumulated	toa_outgoing_shortwave_flux	J m^-2
`LW_u_toa_acc`		Longwave Flux - Upward - TOA - accumulated	toa_outgoing_longwave_flux	J m^-2
`albedo`		Surface Albedo	surface_albedo
`emiss_sfc`		Surface Emissivity	surface_longwave_emissivity
`SH`		Sensible Heat Flux - Upward - at surface - instant	surface_upward_sensible_heat_flux	W m^-2
`LH`		Latent Heat Flux - Upward - at surface - instant	surface_upward_latent_heat_flux	W m^-2
`SH_acc`		Sensible Heat Flux - Upward - at surface - accumulated	surface_upward_sensible_heat_flux	J m^-2
`LH_acc`		Latent Heat Flux - Upward - at surface - accumulated	surface_upward_latent_heat_flux	J m^-2
`MH`		Moisture Heat Flux - Upward - at surface - instant	surface_upward_water_flux	kg m^-2 s^-1
`u_star`		Friction Velocity (u*)		m s^-1	Cannot identify a corresponding standard_name.
`LWP`		Liquid Water Path	atmosphere_cloud_liquid_water_content	kg m^-2	Column integrated cloud water
`IWP`		Ice Water Path	atmosphere_cloud_ice_content	kg m^-2	Column integrated cloud ice

Two-Dimensional Surface / Soil: out2dLandSoil

CF	CMIP	long_name	standard_name	Units	Notes
LandMask		Land Mask	land_binary_mask		1=land, 0=water
LandUse		Land Use Category	area_type		see WRF's LANDUSE table for types
SoilT_L		Soil Temperature - at lower boundary	soil_temperature	K
SoilT_B		Soil Temperature - bottom	soil_temperature	K
GroundFlx		Ground Heat Flux	upward_heat_flux_at_ground_level_in_soil	W m^-2
SnowHgt		Snow Depth	surface_snow_thickness	m
SnowWater		Snow Water Equivalent	surface_snow_amount	kg m^-2
SnowDens		Snow Density	snow_density	kg m^-3
SnowFlx		Snow Phase Change Heat Flux	surface_snow_melt_and_sublimation_heat_flux	W m^-2
`SnowMelt`		Snow Melt - accumulated	surface_snow_melt_amount	kg m^-2
SeaIce		Sea Ice	sea_ice_area_fraction	1	1=seaice, 0=water
WaterFlx	evspsbl	Water Evaporation Flux - at surface	water_evaporation_flux	kg m^-2
SfcRunoff	mrros	Surface Runoff Flux	surface_runoff_flux	mm
SubRunoff	mrro	Sub-Surface Runoff Flux	runoff_flux	mm
SoilMoist	mrso	Soil Moisture Content - total	soil_moisture_content	kg m^-2

Three-Dimensional Soil: outSoil

CF	CMIP	long_name	standard_name	Units	Notes
SoilTemp		Soil Temperature	soil_temperature	K
SoilMoist		Soil Moisture	soil_moisture_content	m³ m^-3
SoilWater		Soil Liquid Water	liquid_water_content_of_soil_layer	m³ m^-3

Two-Dimensional CLimate WRF: outCLWRF

Note: The CLWRF variables are activated by added CLWRF compiler flags within configiure.wrf. The variables are outputed to the Auxillary history output file(s). See CLWRF website for more information.

CF	CMIP	long_name	standard_name	Units	Notes
`T_sfc_min`		Temperature at the Surface - Minimum	surface_temperature	K
`T_sfc_max`		Temperature at the Surface - Maximum	surface_temperature	K
`T_sfc_mean`		Temperature at the Surface - Mean	surface_temperature	K
`T_sfc_std`		Temperature at the Surface - Standard Deviation	surface_temperature	K
`T_2m_min`		Temperature at 2 m - Minimum	air_temperature	°C
`T_2m_max`		Temperature at 2 m - Maximum	air_temperature	°C
`T_2m_mean`		Temperature at 2 m - Mean	air_temperature	°C
`T_2m_std`		Temperature at 2 m - Standard Deviation	air_temperature	°C
`q_2m_min`		Mixing Ratio at 2 m - Minimum	humidity_mixing_ratio	kg kg^-1
`q_2m_max`		Mixing Ratio at 2 m - Maximum	humidity_mixing_ratio	kg kg^-1
`q_2m_mean`		Mixing Ratio at 2 m - Mean	humidity_mixing_ratio	kg kg^-1
`q_2m_std`		Mixing Ratio at 2 m - Standard Deviation	humidity_mixing_ratio	kg kg^-1