NCEP Parameter Code Table 129 PRES 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 > Clouds > Cloud Base Pressure EARTH SCIENCE > Atmosphere > Clouds > Cloud Top Pressure EARTH SCIENCE > Atmosphere > Clouds > Cloud Base Pressure EARTH SCIENCE > Atmosphere > Clouds > Cloud Top Pressure EARTH SCIENCE > Atmosphere > Clouds > Cloud Base Pressure EARTH SCIENCE > Atmosphere > Clouds > Cloud Top Pressure EARTH SCIENCE > Atmosphere > Atmospheric Pressure > Hydrostatic Pressure PRMSL Pressure reduced to MSL Pa PTEND Pressure tendency Pa tendency_of_air_pressure EARTH SCIENCE > Atmosphere > Atmospheric Pressure > Pressure Tendency PVORT Potential vorticity K m^2 kg^-1 s^-1 ertel_potential_vorticity EARTH SCIENCE > Atmosphere > Atmospheric Winds > Vorticity ICAHT ICAO Standard Atmosphere reference height m GP Geopotential m^2 s^-2 geopotential HGT Geopotential height gpm EARTH SCIENCE > Land Surface > Topography > Terrain Elevation EARTH SCIENCE > Atmosphere > Altitude > Geopotential Height geopotential_height DIST Geometric height m altitude HSTDV Standard deviation of height m TOZNE Total ozone Dobson equivalent_thickness_at_stp_of_atmosphere_o3_content EARTH SCIENCE > Atmosphere > Air Quality > Tropospheric Ozone TMP 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 VTMP Virtual temperature K virtual_temperature EARTH SCIENCE > Atmosphere > Atmospheric Temperature > Virtual Temperature POT Potential temperature K air_potential_temperature EARTH SCIENCE > Atmosphere > Atmospheric Temperature > Potential Temperature EPOT Pseudo-adiabatic potential temperature K pseudo_equivalent_potential_temperature T MAX Maximum temperature K maximum_air_temperature EARTH SCIENCE > Atmosphere > Atmospheric Temperature > Maximum/Minimum Temperature T MIN Minimum temperature K minimum_air_temperature EARTH SCIENCE > Atmosphere > Atmospheric Temperature > Maximum/Minimum Temperature DPT Dewpoint temperature K dew_point_temperature EARTH SCIENCE > Atmosphere > Atmospheric Water Vapor > Dew Point Temperature DEPR Dewpoint depression (or deficit) K dew_point_depression EARTH SCIENCE > Atmosphere > Atmospheric Water Vapor > Dew Point Temperature LAPR Lapse rate K m^-1 air_temperature_lapse_rate VIS Visibility m visibility_in_air EARTH SCIENCE > Atmosphere > Air Quality > Visibility RDSP1 Radar spectra (1) RDSP2 Radar spectra (2) RDSP3 Radar spectra (3) PLI Parcel lifted index (to 500hPa) K TMP A Temperature anomaly K air_temperature_anomaly PRESA Pressure anomaly Pa air_pressure_anomaly GPA Geopotential height anomaly gpm geopotential_height_anomaly EARTH SCIENCE > Atmosphere > Altitude > Geopotential Height WVSP1 Wave spectra (1) WVSP2 Wave spectra (2) WVSP3 Wave spectra (3) WDIR Wind direction deg wind_from_direction EARTH SCIENCE > Atmosphere > Atmospheric Winds > Surface Winds WIND Wind speed m s^-1 wind_speed EARTH SCIENCE > Atmosphere > Atmospheric Winds > Surface Winds U GRD 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 GRD v-component of wind m s^-1 northward_wind EARTH SCIENCE > Atmosphere > Atmospheric Winds > Surface Winds EARTH SCIENCE > Atmosphere > Atmospheric Winds > Upper Level Winds STRM Stream function m^2 s-1 atmosphere_horizontal_streamfunction EARTH SCIENCE > Atmosphere > Atmospheric Winds > Streamfunctions V POT Velocity potential m^2 s-1 atmosphere_horizontal_velocity_potential MNTSF Montgomery stream function m^2 s^-2 atmosphere_horizontal_montgomery_streamfunction EARTH SCIENCE > Atmosphere > Atmospheric Winds > Streamfunctions SGCVV Sigma coordinate vertical velocity s^-1 lagrangian_tendency_of_atmosphere_sigma_coordinate EARTH SCIENCE > Atmosphere > Atmospheric Winds > Vertical Wind Motion V VEL Vertical velocity Pa s^-1 lagrangian_tendency_of_air_pressure EARTH SCIENCE > Atmosphere > Atmospheric Winds > Vertical Wind Motion DZDT Vertical velocity m s^-1 upward_air_velocity EARTH SCIENCE > Atmosphere > Atmospheric Winds > Vertical Wind Motion ABS V Absolute vorticity s^-1 atmosphere_absolute_vorticity EARTH SCIENCE > Atmosphere > Atmospheric Winds > Vorticity ABS D Absolute divergence s^-1 EARTH SCIENCE > Atmosphere > Atmospheric Winds > Convergence/Divergence REL V Relative vorticity s^-1 atmosphere_relative_vorticity EARTH SCIENCE > Atmosphere > Atmospheric Winds > Vorticity REL D Relative divergence s^-1 divergence_of_wind EARTH SCIENCE > Atmosphere > Atmospheric Winds > Convergence/Divergence VUCSH Vertical u-component shear s^-1 eastward_wind_shear EARTH SCIENCE > Atmosphere > Atmospheric Winds > Wind Shear VVCSH Vertical v-component shear s^-1 northward_wind_shear EARTH SCIENCE > Atmosphere > Atmospheric Winds > Wind Shear DIR C Direction of current deg direction_of_sea_water_velocity EARTH SCIENCE > Oceans > Ocean Circulation > Ocean Currents SP C Speed of current m s^-1 sea_water_speed EARTH SCIENCE > Oceans > Ocean Circulation > Ocean Currents UOGRD u-component of current m s^-1 eastward_sea_water_velocity EARTH SCIENCE > Oceans > Ocean Circulation > Ocean Currents VOGRD v-component of current m s^-1 northward_sea_water_velocity EARTH SCIENCE > Oceans > Ocean Circulation > Ocean Currents SPF H Specific humidity kg kg^-1 specific_humidity EARTH SCIENCE > Atmosphere > Atmospheric Water Vapor > Humidity R H Relative humidity % relative_humidity EARTH SCIENCE > Atmosphere > Atmospheric Water Vapor > Humidity MIXR Humidity mixing ratio kg kg^-1 humidity_mixing_ratio EARTH SCIENCE > Atmosphere > Atmospheric Water Vapor > Humidity P WAT Precipitable water kg m^-2 atmosphere_water_vapor_content EARTH SCIENCE > Atmosphere > Atmospheric Water Vapor > Precipitable Water VAPP Vapor pressure Pa water_vapor_pressure EARTH SCIENCE > Atmosphere > Atmospheric Water Vapor > Water Vapor SAT D Saturation deficit Pa water_vapor_saturation_deficit EARTH SCIENCE > Atmosphere > Atmospheric Water Vapor > Water Vapor EVP Evaporation kg m^-2 water_evaporation_amount EARTH SCIENCE > Atmosphere > Atmospheric Water Vapor > Evaporation C ICE Cloud ice kg m^-2 atmosphere_cloud_ice_content EARTH SCIENCE > Atmosphere > Clouds > Cloud Liquid Water/Ice PRATE Precipitation rate kg m^-2 s-1 precipitation_flux EARTH SCIENCE > Atmosphere > Precipitation > Precipitation Rate TSTM Thunderstorm probability % thunderstorm_probability A PCP Total precipitation kg m^-2 precipitation_amount EARTH SCIENCE > Atmosphere > Precipitation > Precipitation Amount NCPCP Large scale precipitation kg m^-2 large_scale_precipitation_amount EARTH SCIENCE > Atmosphere > Precipitation > Precipitation Amount ACPCP Convective precipitation kg m^-2 convective_precipitation_amount EARTH SCIENCE > Atmosphere > Precipitation > Precipitation Amount SRWEQ Snowfall rate water equivalent kg m^-2 s-1 snowfall_flux EARTH SCIENCE > Hydrosphere > Snow/Ice > Snow Water Equivalent WEASD Water equivalent of accumulated snow depth kg m^-2 surface_snow_amount EARTH SCIENCE > Hydrosphere > Snow/Ice > Snow Water Equivalent SNO D Snow depth m surface_snow_thickness EARTH SCIENCE > Hydrosphere > Snow/Ice > Snow Depth MIXHT Mixed layer depth m ocean_mixed_layer_thickness TTHDP Transient thermocline depth m EARTH SCIENCE > Oceans > Ocean Temperature > Thermocline MTHD Main thermocline depth m EARTH SCIENCE > Oceans > Ocean Temperature > Thermocline MTH A Main thermocline anomaly m EARTH SCIENCE > Oceans > Ocean Temperature > Thermocline T CDC Total cloud cover % cloud_area_fraction EARTH SCIENCE > Atmosphere > Clouds > Cloud Amount/Frequency CDCON Convective cloud cover % convective_cloud_area_fraction EARTH SCIENCE > Atmosphere > Clouds > Cloud Amount/Frequency L CDC Low cloud cover % EARTH SCIENCE > Atmosphere > Clouds > Cloud Amount/Frequency M CDC Medium cloud cover % EARTH SCIENCE > Atmosphere > Clouds > Cloud Amount/Frequency H CDC High cloud cover % EARTH SCIENCE > Atmosphere > Clouds > Cloud Amount/Frequency C WAT Cloud water kg m^-2 atmosphere_cloud_condensed_water_content EARTH SCIENCE > Atmosphere > Clouds > Cloud Liquid Water/Ice BLI Best lifted index (to 500 hPa) K SNO C Convective snow kg m^-2 convective_snowfall_amount EARTH SCIENCE > Atmosphere > Precipitation > Snow SNO L Large scale snow kg m^-2 large_scale_snowfall_amount EARTH SCIENCE > Atmosphere > Precipitation > Snow WTMP Water temperature K sea_water_temperature EARTH SCIENCE > Oceans > Ocean Temperature > Sea Surface Temperature EARTH SCIENCE > Oceans > Ocean Temperature > Water Temperature LAND Land cover fraction land_area_fraction EARTH SCIENCE > Land Surface > Land Use/Land Cover > Land Cover DSL M Deviation of sea level from mean m sea_surface_height_above_sea_level EARTH SCIENCE > Oceans > Coastal Processes > Sea Level Rise SFC R Surface roughness m surface_roughness_length EARTH SCIENCE > Land Surface > Topography > Surface Roughness ALBDO Albedo % surface_albedo EARTH SCIENCE > Land Surface > Surface Radiative Properties > Albedo TSOIL Soil temperature K soil_temperature EARTH SCIENCE > Land Surface > Soils > Soil Temperature SOILM Soil moisture content kg m^-2 soil_moisture_content EARTH SCIENCE > Land Surface > Soils > Soil Moisture/Water Content VEG Vegetation % vegetation_area_fraction EARTH SCIENCE > Biosphere > Vegetation > Vegetation Cover SALTY Salinity kg kg^-1 sea_water_salinity EARTH SCIENCE > Oceans > Salinity/Density > Salinity DEN Density kg m^-3 WATR Water runoff kg m^-2 surface_runoff_amount EARTH SCIENCE > Hydrosphere > Surface Water > Runoff ICE C Ice cover fraction sea_ice_area_fraction EARTH SCIENCE > Oceans > Sea Ice > Ice Extent ICETK Ice thickness m sea_ice_thickness EARTH SCIENCE > Oceans > Sea Ice > Ice Depth/Thickness DICED Direction of ice drift deg direction_of_sea_ice_velocity EARTH SCIENCE > Oceans > Sea Ice > Sea Ice Motion SICED Speed of ice drift m s^-1 sea_ice_speed EARTH SCIENCE > Oceans > Sea Ice > Sea Ice Motion U ICE u-component of ice drift m s^-1 eastward_sea_ice_velocity EARTH SCIENCE > Oceans > Sea Ice > Sea Ice Motion V ICE v-component of ice drift m s^-1 northward_sea_ice_velocity EARTH SCIENCE > Oceans > Sea Ice > Sea Ice Motion ICE G Ice growth rate m s^-1 tendency_of_sea_ice_thickness_due_to_thermodynamics EARTH SCIENCE > Oceans > Sea Ice > Ice Growth/Melt ICE D Ice divergence s^-1 divergence_of_sea_ice_velocity EARTH SCIENCE > Oceans > Sea Ice > Sea Ice Motion SNO M Snow melt kg m^-2 surface_snow_melt_amount EARTH SCIENCE > Hydrosphere > Snow/Ice > Snow Melt HTSGW Significant height of combined wind waves and swell m significant_height_of_wind_and_swell_waves EARTH SCIENCE > Oceans > Ocean Waves > Significant Wave Height WVDIR Direction of wind waves deg direction_of_wind_wave_velocity EARTH SCIENCE > Oceans > Ocean Waves > Wave Speed/Direction WVHGT Significant height of wind waves m significant_height_of_wind_waves EARTH SCIENCE > Oceans > Ocean Waves > Significant Wave Height WVPER Mean period of wind waves m wind_wave_period EARTH SCIENCE > Oceans > Ocean Waves > Wave Period SWDIR Direction of swell waves deg direction_of_swell_wave_velocity EARTH SCIENCE > Oceans > Ocean Waves > Swells SWELL Significant height of swell waves m significant_height_of_swell_waves EARTH SCIENCE > Oceans > Ocean Waves > Swells SWPER Mean period of swell waves s swell_wave_period EARTH SCIENCE > Oceans > Ocean Waves > Swells DIRPW Primary wave direction deg EARTH SCIENCE > Oceans > Ocean Waves > Wave Speed/Direction PERPW Primary wave mean period s EARTH SCIENCE > Oceans > Ocean Waves > Wave Period DIRSW Secondary wave direction deg EARTH SCIENCE > Oceans > Ocean Waves > Wave Speed/Direction PERSW Secondary wave mean period s EARTH SCIENCE > Oceans > Ocean Waves > Wave Period NSWRS Net short-wave radiation flux (surface) W m^-2 surface_net_upward_shortwave_flux EARTH SCIENCE > Atmosphere > Atmospheric Radiation > Incoming Solar Radiation NLWRS Net longwave radiation flux (surface) W m^-2 surface_net_upward_longwave_flux EARTH SCIENCE > Atmosphere > Atmospheric Radiation > Outgoing Longwave Radiation NSWRT Net short-wave radiation flux (top of atmosphere) W m^-2 toa_net_upward_shortwave_flux EARTH SCIENCE > Atmosphere > Atmospheric Radiation > Incoming Solar Radiation NLWRT Net longwave radiation flux (top of atmosphere) W m^-2 toa_outgoing_longwave_flux EARTH SCIENCE > Atmosphere > Atmospheric Radiation > Outgoing Longwave Radiation LWAVR Long-wave radiation flux W m^-2 net_upward_longwave_flux_in_air EARTH SCIENCE > Atmosphere > Atmospheric Radiation > Longwave Radiation SWAVR Short-wave radiation flux W m^-2 net_upward_shortwave_flux_in_air EARTH SCIENCE > Atmosphere > Atmospheric Radiation > Shortwave Radiation G RAD Global radiation flux W m^-2 surface_downwelling_shortwave_flux_in_air BRTMP Brightness temperature K brightness_temperature EARTH SCIENCE > Spectral/Engineering > Infrared Wavelengths > Brightness Temperature LWRAD Radiance (with respect to wave number) W srm^-2 SWRAD Radiance (with respect to wave length) W srm^-2 LHTFL Latent heat flux W m^-2 surface_upward_latent_heat_flux EARTH SCIENCE > Atmosphere > Atmospheric Radiation > Heat Flux SHTFL Sensible heat flux W m^-2 surface_upward_sensible_heat_flux EARTH SCIENCE > Atmosphere > Atmospheric Radiation > Heat Flux BLYDP Boundary layer dissipation W m^-2 U FLX Momentum flux, u-component N m^-2 downward_eastward_momentum_flux_in_air V FLX Momentum flux, v-component N m^-2 downward_northward_momentum_flux_in_air WMIXE Wind mixing energy J wind_mixing_energy_flux_into_ocean IMG D Image data PAOT Probability anomaly of temperature % PAOP Probability anomaly of precipitation % FRAIN Rain fraction of total liquid water FICE Ice fraction of total condensate FRIME Rime factor CUEFI Convective cloud efficiency TCOND Total condensate kg kg^-1 TCOLI Total column-integrated cloud ice kg m^-2 TCOLR Total column-integrated rain kg m^-2 TCOLS Total column-integrated snow kg m^-2 TCOLC Total column-integrated condensate kg m^-2 PLPL Pressure of level from which parcel was lifted Pa HLPL Height of level from which parcel was lifted m CEMS Cloud Emissivity fraction COPD Cloud Optical Depth PSIZ Effective Particle Size microns TCWAT Total Water Cloud % TCICE Total Ice Cloud % WDIF Wind difference m s^-1 WSTP Wave Steepness PTAN Probability of Temperature being above normal % PTNN Probability of Temperature being near normal % PTBN Probability of Temperature being below normal % PPAN Probability of Precipitation being above normal % PPNN Probability of Precipitation being near normal % PPBN Probability of Precipitation being below normal % PMTC Particulate matter (coarse) g m^-3 PMTF Particulate matter (fine) g m^-3 AETMP Analysis error of temperature K AEDPT Analysis error of dew point % AESPH Analysis error of specific humidity kg kg^-1 AEUWD Analysis error of u-wind m s^-1 AEVWD Analysis error of v-wind m s^-1 LPMTF Particulate matter (fine) log10(g m^-3) LIPMF Integrated column particulate matter (fine) log10(g m^-3) REFZR Derived radar reflectivity backscatter from rain mm^6 m^-3 REFZI Derived radar reflectivity backscatter from ice mm^6 m^-3 REFZC Derived radar reflectivity backscatter from parameterized convection mm^6 m^-3 TCLSW Total column-integrated supercooled liquid water kg m^-2 TCOLM Total column-integrated melting ice kg m^-2 Ellrod Index ELRDI TSEC Seconds prior to initial reference time (defined in octets 18-20) s TSECA Seconds after initial reference time (defined in octets 18-20) s NUM Number of samples/observations AEPRS Analysis error of pressure Pa ICSEV Icing severity ICPRB Icing probability OZCON Ozone concentration ppb OZCAT Categorical ozone concentration VEDH Vertical eddy diffusivity heat exchange (Kh) m^2 s-1 SIGV Sigma level value USCT Scatterometer estimated U wind componenet m s^-1 VSCT Scatterometer estimated V wind componenet m s^-1 DBSS Geometric depth below sea surface m ODHA Ocean dynamic height anomaly dynamic m OHC Ocean heat content J m^-2 SSHG Sea surface height relative to geoid m SLTFL Salt flux g cm^-2 s-1 DUVB UV-B downward solar flux W m^-2 CDUVB Clear sky UV-B downward solar flux W m^-2 THFLX Total downward heat flux at surface (downward is positive) W m^-2 REFO Observed radar reflectivity dbZ REFD Derived radar reflectivity dbZ REFC Maximum/Composite radar reflectivity dbZ