WMO GRIB1 Parameter Code Table 3 Pressure Pa air_pressure EARTH SCIENCE > Atmosphere > Atmospheric Pressure > Surface Pressure EARTH SCIENCE > Atmosphere > Clouds > Cloud Base Pressure EARTH SCIENCE > Atmosphere > Clouds > Cloud Top Pressure EARTH SCIENCE > Atmosphere > Altitude > Tropopause EARTH SCIENCE > Atmosphere > Atmospheric Pressure > Sea Level Pressure EARTH SCIENCE > Atmosphere > Atmospheric Pressure > Hydrostatic Pressure Pressure reduced to MSL Pa EARTH SCIENCE > Atmosphere > Atmospheric Pressure > Sea Level Pressure Pressure tendency Pa s^-1 tendency_of_air_pressure EARTH SCIENCE > Atmosphere > Atmospheric Pressure > Pressure Tendency Potential vorticity K m^2 kg^-1 s^-1 ertel_potential_vorticity EARTH SCIENCE > Atmosphere > Atmospheric Winds > Vorticity ICAO Standard Atmosphere reference height m Geopotential m2 s^-2 geopotential Geopotential height gpm geopotential_height EARTH SCIENCE > Atmosphere > Altitude > Geopotential Height Geometric height m altitude Standard deviation of height m Total ozone Dobson equivalent_thickness_at_stp_of_atmosphere_o3_content EARTH SCIENCE > Atmosphere > Air Quality > Tropospheric Ozone Temperature K air_temperature EARTH SCIENCE > Land Surface > Land Temperature > Skin Temperature EARTH SCIENCE > Atmosphere > Atmospheric Temperature > Surface Air Temperature EARTH SCIENCE > Atmosphere > Atmospheric Temperature > Air Temperature Virtual temperature K virtual_temperature EARTH SCIENCE > Atmosphere > Atmospheric Temperature > Virtual Temperature Potential temperature K air_potential_temperature EARTH SCIENCE > Atmosphere > Atmospheric Temperature > Potential Temperature Pseudo-adiabatic potential temperature K pseudo_equivalent_potential_temperature Maximum temperature K maximum_air_temperature EARTH SCIENCE > Atmosphere > Atmospheric Temperature > Maximum/Minimum Temperature Minimum temperature K minimum_air_temperature EARTH SCIENCE > Atmosphere > Atmospheric Temperature > Maximum/Minimum Temperature Dewpoint temperature K dew_point_temperature EARTH SCIENCE > Atmosphere > Atmospheric Water Vapor > Dew Point Temperature Dewpoint depression (or deficit) K dew_point_depression EARTH SCIENCE > Atmosphere > Atmospheric Water Vapor > Dew Point Temperature Lapse rate K m^-1 air_temperature_lapse_rate Visibility m visibility_in_air EARTH SCIENCE > Atmosphere > Air Quality > Visibility Radar spectra (1) Radar spectra (2) Radar spectra (3) Parcel lifted index (to 500hPa) K Temperature anomaly K air_temperature_anomaly Pressure anomaly Pa air_pressure_anomaly Geopotential height anomaly gpm geopotential_height_anomaly EARTH SCIENCE > Atmosphere > Altitude > Geopotential Height Wave spectra (1) Wave spectra (2) Wave spectra (3) Wind direction degree wind_from_direction EARTH SCIENCE > Atmosphere > Atmospheric Winds > Surface Winds Wind speed m s^-1 wind_speed EARTH SCIENCE > Atmosphere > Atmospheric Winds > Surface Winds u-component of wind m s^-1 eastward_wind EARTH SCIENCE > Atmosphere > Atmospheric Winds > Surface Winds EARTH SCIENCE > Atmosphere > Atmospheric Winds > Upper Level Winds v-component of wind m s^-1 northward_wind EARTH SCIENCE > Atmosphere > Atmospheric Winds > Surface Winds EARTH SCIENCE > Atmosphere > Atmospheric Winds > Upper Level Winds Stream function m s^-1 atmosphere_horizontal_streamfunction EARTH SCIENCE > Atmosphere > Atmospheric Winds > Streamfunctions Velocity potential m s^-1 atmosphere_horizontal_velocity_potential Montgomery stream function m s^-1 atmosphere_horizontal_montgomery_streamfunction EARTH SCIENCE > Atmosphere > Atmospheric Winds > Streamfunctions Sigma coordinate vertical velocity s^-1 lagrangian_tendency_of_atmosphere_sigma_coordinate EARTH SCIENCE > Atmosphere > Atmospheric Winds > Vertical Wind Motion Vertical velocity Pa s^-1 lagrangian_tendency_of_air_pressure EARTH SCIENCE > Atmosphere > Atmospheric Winds > Vertical Wind Motion Vertical velocity m s^-1 upward_air_velocity EARTH SCIENCE > Atmosphere > Atmospheric Winds > Vertical Wind Motion Absolute vorticity s^-1 atmosphere_absolute_vorticity EARTH SCIENCE > Atmosphere > Atmospheric Winds > Vorticity Absolute divergence s^-1 EARTH SCIENCE > Atmosphere > Atmospheric Winds > Convergence/Divergence Relative vorticity s^-1 atmosphere_relative_vorticity EARTH SCIENCE > Atmosphere > Atmospheric Winds > Vorticity Relative divergence s^-1 divergence_of_wind EARTH SCIENCE > Atmosphere > Atmospheric Winds > Convergence/Divergence Vertical u-component shear s^-1 eastward_wind_shear EARTH SCIENCE > Atmosphere > Atmospheric Winds > Wind Shear Vertical v-component shear s^-1 northward_wind_shear EARTH SCIENCE > Atmosphere > Atmospheric Winds > Wind Shear Direction of current degree direction_of_sea_water_velocity EARTH SCIENCE > Oceans > Ocean Circulation > Ocean Currents Speed of current m s^-1 sea_water_speed EARTH SCIENCE > Oceans > Ocean Circulation > Ocean Currents u-component of current m s^-1 eastward_sea_water_velocity EARTH SCIENCE > Oceans > Ocean Circulation > Ocean Currents v-component of current m s^-1 northward_sea_water_velocity EARTH SCIENCE > Oceans > Ocean Circulation > Ocean Currents Specific humidity kg kg^-1 specific_humidity EARTH SCIENCE > Atmosphere > Atmospheric Water Vapor > Humidity Relative humidity % relative_humidity EARTH SCIENCE > Atmosphere > Atmospheric Water Vapor > Humidity Humidity mixing ratio kg kg^-1 humidity_mixing_ratio EARTH SCIENCE > Atmosphere > Atmospheric Water Vapor > Humidity Precipitable water kg m^-2 atmosphere_water_vapor_content EARTH SCIENCE > Atmosphere > Atmospheric Water Vapor > Precipitable Water Vapor pressure Pa water_vapor_pressure EARTH SCIENCE > Atmosphere > Atmospheric Water Vapor > Water Vapor Saturation deficit Pa water_vapor_saturation_deficit EARTH SCIENCE > Atmosphere > Atmospheric Water Vapor > Water Vapor Evaporation kg m^-2 water_evaporation_amount EARTH SCIENCE > Atmosphere > Atmospheric Water Vapor > Evaporation Cloud ice kg m^-2 atmosphere_cloud_ice_content EARTH SCIENCE > Atmosphere > Clouds > Cloud Liquid Water/Ice Precipitation rate kg m^-2 s^-1 precipitation_flux EARTH SCIENCE > Atmosphere > Precipitation > Precipitation Rate Thunderstorm probability % thunderstorm_probability Total precipitation kg m^-2 precipitation_amount EARTH SCIENCE > Atmosphere > Precipitation > Precipitation Amount Large scale precipitation kg m^-2 large_scale_precipitation_amount EARTH SCIENCE > Atmosphere > Precipitation > Precipitation Amount Convective precipitation kg m^-2 convective_precipitation_amount EARTH SCIENCE > Atmosphere > Precipitation > Precipitation Amount Snowfall rate water equivalent kg m^-2 s^-1 snowfall_flux EARTH SCIENCE > Hydrosphere > Snow/Ice > Snow Water Equivalent Water equivalent of accumulated snow depth kg m^-2 surface_snow_amount EARTH SCIENCE > Hydrosphere > Snow/Ice > Snow Water Equivalent Snow depth m surface_snow_thickness EARTH SCIENCE > Hydrosphere > Snow/Ice > Snow Depth Mixed layer depth m ocean_mixed_layer_thickness Transient thermocline depth m EARTH SCIENCE > Oceans > Ocean Temperature > Thermocline Main thermocline depth m EARTH SCIENCE > Oceans > Ocean Temperature > Thermocline Main thermocline anomaly m EARTH SCIENCE > Oceans > Ocean Temperature > Thermocline Total cloud cover % cloud_area_fraction EARTH SCIENCE > Atmosphere > Clouds > Cloud Amount/Frequency Convective cloud cover % convective_cloud_area_fraction EARTH SCIENCE > Atmosphere > Clouds > Cloud Amount/Frequency Low cloud cover % EARTH SCIENCE > Atmosphere > Clouds > Cloud Amount/Frequency Medium cloud cover % EARTH SCIENCE > Atmosphere > Clouds > Cloud Amount/Frequency High cloud cover % EARTH SCIENCE > Atmosphere > Clouds > Cloud Amount/Frequency Cloud water kg m^-2 atmosphere_cloud_condensed_water_content EARTH SCIENCE > Atmosphere > Clouds > Cloud Liquid Water/Ice Best lifted index (to 500 hPa) K Convective snow kg m^-2 convective_snowfall_amount EARTH SCIENCE > Atmosphere > Precipitation > Snow Large scale snow kg m^-2 large_scale_snowfall_amount EARTH SCIENCE > Atmosphere > Precipitation > Snow Water temperature K sea_water_temperature EARTH SCIENCE > Oceans > Ocean Temperature > Sea Surface Temperature EARTH SCIENCE > Oceans > Ocean Temperature > Water Temperature Land cover proportion land_area_fraction EARTH SCIENCE > Land Surface > Land Use/Land Cover > Land Cover Deviation of sea level from mean m sea_surface_height_above_sea_level EARTH SCIENCE > Oceans > Coastal Processes > Sea Level Rise Surface roughness m surface_roughness_length EARTH SCIENCE > Land Surface > Topography > Surface Roughness Albedo % surface_albedo EARTH SCIENCE > Land Surface > Surface Radiative Properties > Albedo Soil temperature K soil_temperature EARTH SCIENCE > Land Surface > Soils > Soil Temperature Soil moisture content kg m^-2 soil_moisture_content EARTH SCIENCE > Land Surface > Soils > Soil Moisture/Water Content Vegetation % vegetation_area_fraction EARTH SCIENCE > Biosphere > Vegetation > Vegetation Cover Salinity kg kg^-1 sea_water_salinity EARTH SCIENCE > Oceans > Salinity/Density > Salinity Density kg m^-3 Water runoff kg m^-2 surface_runoff_amount EARTH SCIENCE > Hydrosphere > Surface Water > Runoff Ice cover proportion sea_ice_area_fraction EARTH SCIENCE > Oceans > Sea Ice > Ice Extent Ice thickness m sea_ice_thickness EARTH SCIENCE > Oceans > Sea Ice > Ice Depth/Thickness Direction of ice drift degree direction_of_sea_ice_velocity EARTH SCIENCE > Oceans > Sea Ice > Sea Ice Motion Speed of ice drift m s^-1 sea_ice_speed EARTH SCIENCE > Oceans > Sea Ice > Sea Ice Motion u-component of ice drift m s^-1 eastward_sea_ice_velocity EARTH SCIENCE > Oceans > Sea Ice > Sea Ice Motion v-component of ice drift m s^-1 northward_sea_ice_velocity EARTH SCIENCE > Oceans > Sea Ice > Sea Ice Motion Ice growth rate m s^-1 tendency_of_sea_ice_thickness_due_to_thermodynamics EARTH SCIENCE > Oceans > Sea Ice > Ice Growth/Melt Ice divergence s^-1 divergence_of_sea_ice_velocity EARTH SCIENCE > Oceans > Sea Ice > Sea Ice Motion Snow melt kg m^-2 surface_snow_melt_amount EARTH SCIENCE > Hydrosphere > Snow/Ice > Snow Melt Significant height of combined wind waves and swell m significant_height_of_wind_and_swell_waves EARTH SCIENCE > Oceans > Ocean Waves > Significant Wave Height Direction of wind waves degree direction_of_wind_wave_velocity EARTH SCIENCE > Oceans > Ocean Waves > Wave Speed/Direction Significant height of wind waves m significant_height_of_wind_waves EARTH SCIENCE > Oceans > Ocean Waves > Significant Wave Height Mean period of wind waves s wind_wave_period EARTH SCIENCE > Oceans > Ocean Waves > Wave Period Direction of swell waves degree direction_of_swell_wave_velocity EARTH SCIENCE > Oceans > Ocean Waves > Swells Significant height of swell waves m significant_height_of_swell_waves EARTH SCIENCE > Oceans > Ocean Waves > Swells Mean period of swell waves s swell_wave_period EARTH SCIENCE > Oceans > Ocean Waves > Swells Primary wave direction degree EARTH SCIENCE > Oceans > Ocean Waves > Wave Speed/Direction Primary wave mean period s EARTH SCIENCE > Oceans > Ocean Waves > Wave Period Secondary wave direction degree EARTH SCIENCE > Oceans > Ocean Waves > Wave Speed/Direction Secondary wave mean period s EARTH SCIENCE > Oceans > Ocean Waves > Wave Period Net short-wave radiation flux (surface) W m^-2 surface_net_upward_shortwave_flux EARTH SCIENCE > Atmosphere > Atmospheric Radiation > Incoming Solar Radiation Net longwave radiation flux (surface) W m^-2 surface_net_upward_longwave_flux EARTH SCIENCE > Atmosphere > Atmospheric Radiation > Outgoing Longwave Radiation Net short-wave radiation flux (top of atmosphere) W m^-2 toa_net_upward_shortwave_flux EARTH SCIENCE > Atmosphere > Atmospheric Radiation > Incoming Solar Radiation Net longwave radiation flux (top of atmosphere) W m^-2 toa_outgoing_longwave_flux EARTH SCIENCE > Atmosphere > Atmospheric Radiation > Outgoing Longwave Radiation Long-wave radiation flux W m^-2 net_upward_longwave_flux_in_air EARTH SCIENCE > Atmosphere > Atmospheric Radiation > Longwave Radiation Short-wave radiation flux W m^-2 net_upward_shortwave_flux_in_air EARTH SCIENCE > Atmosphere > Atmospheric Radiation > Shortwave Radiation Global radiation flux W m^-2 surface_downwelling_shortwave_flux_in_air Brightness temperature K brightness_temperature EARTH SCIENCE > Spectral/Engineering > Infrared Wavelengths > Brightness Temperature Radiance (with respect to wave number) W m^-1 sr^-1 Radiance (with respect to wave length) W m^-1 sr^-1 Latent heat flux W m^-2 surface_upward_latent_heat_flux EARTH SCIENCE > Atmosphere > Atmospheric Radiation > Heat Flux Sensible heat flux W m^-2 surface_upward_sensible_heat_flux EARTH SCIENCE > Atmosphere > Atmospheric Radiation > Heat Flux Boundary layer dissipation W m^-2 Momentum flux, u-component N m^-2 downward_eastward_momentum_flux_in_air Momentum flux, v-component N m^-2 downward_northward_momentum_flux_in_air Wind mixing energy J wind_mixing_energy_flux_into_ocean Image data Precipitation rate mm day^-1 EARTH SCIENCE > Atmosphere > Precipitation > Precipitation Rate Total precipitation mm EARTH SCIENCE > Atmosphere > Precipitation > Precipitation Amount Vertical speed shear s^-1 EARTH SCIENCE > Atmosphere > Atmospheric Winds > Wind Shear Downward short-wave radiation flux W m^-2 EARTH SCIENCE > Atmosphere > Atmospheric Radiation > Incoming Solar Radiation EARTH SCIENCE > Atmosphere > Atmospheric Radiation > Shortwave Radiation