NCEP Parameter Code Table 131 PRES Pressure Pa 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 EARTH SCIENCE > Atmosphere > Atmospheric Pressure > Sea Level Pressure PTEND Pressure tendency Pa s^-1 EARTH SCIENCE > Atmosphere > Atmospheric Pressure > Pressure Tendency PVORT Pot. vorticity km^2 kg^-1 s^-1 EARTH SCIENCE > Atmosphere > Atmospheric Winds > Vorticity ICAHT ICAO Standard Atmosphere Reference Height m GP Geopotential m^2 s^-2 EARTH SCIENCE > Land Surface > Topography > Terrain Elevation EARTH SCIENCE > Atmosphere > Altitude > Geopotential Height HGT Geopotential height gpm EARTH SCIENCE > Land Surface > Topography > Terrain Elevation EARTH SCIENCE > Atmosphere > Altitude > Geopotential Height DIST Geometric height m HSTDV Std dev of height m TOZNE Total ozone Dobson EARTH SCIENCE > Atmosphere > Air Quality > Tropospheric Ozone TMP Temp. K 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 temp. K EARTH SCIENCE > Atmosphere > Atmospheric Temperature > Virtual Temperature POT Potential temp. K EARTH SCIENCE > Atmosphere > Atmospheric Temperature > Potential Temperature EPOT Pseudo-adiabatic pot. temp. K TMAX Max. temp. K EARTH SCIENCE > Atmosphere > Atmospheric Temperature > Maximum/Minimum Temperature TMIN Min. temp. K EARTH SCIENCE > Atmosphere > Atmospheric Temperature > Maximum/Minimum Temperature DPT Dew point temp. K EARTH SCIENCE > Atmosphere > Atmospheric Water Vapor > Dew Point Temperature DEPR Dew point depression K EARTH SCIENCE > Atmosphere > Atmospheric Water Vapor > Dew Point Temperature LAPR Lapse rate K m^-1 VIS Visibility m RDSP1 Radar spectra (1) RDSP2 Radar spectra (2) RDSP3 Radar spectra (3) PLI Parcel lifted index (to 500 hPa) K TMPA Temp. anomaly K PRESA Pressure anomaly Pa GPA Geopotential height anomaly gpm EARTH SCIENCE > Atmosphere > Altitude > Geopotential Height WVSP1 Wave spectra (1) WVSP2 Wave spectra (2) WVSP3 Wave spectra (3) WDIR Wind direction deg EARTH SCIENCE > Atmosphere > Atmospheric Winds > Surface Winds WIND Wind speed m s^-1 EARTH SCIENCE > Atmosphere > Atmospheric Winds > Surface Winds UGRD u wind m s^-1 EARTH SCIENCE > Atmosphere > Atmospheric Winds > Surface Winds EARTH SCIENCE > Atmosphere > Atmospheric Winds > Upper Level Winds VGRD v wind m s^-1 EARTH SCIENCE > Atmosphere > Atmospheric Winds > Surface Winds EARTH SCIENCE > Atmosphere > Atmospheric Winds > Upper Level Winds STRM Stream function m^2 s^-1 EARTH SCIENCE > Atmosphere > Atmospheric Winds > Streamfunctions VPOT Velocity potential m^2 s^-1 MNTSF Montgomery stream function m^2 s^-2 EARTH SCIENCE > Atmosphere > Atmospheric Winds > Streamfunctions SGCVV Sigma coord. vertical velocity s^-1 EARTH SCIENCE > Atmosphere > Atmospheric Winds > Vertical Wind Motion VVEL Pressure vertical velocity Pa s^-1 EARTH SCIENCE > Atmosphere > Atmospheric Winds > Vertical Wind Motion DZDT Geometric vertical velocity m s^-1 EARTH SCIENCE > Atmosphere > Atmospheric Winds > Vertical Wind Motion ABSV Absolute vorticity s^-1 EARTH SCIENCE > Atmosphere > Atmospheric Winds > Vorticity ABSD Absolute divergence s^-1 EARTH SCIENCE > Atmosphere > Atmospheric Winds > Convergence/Divergence RELV Relative vorticity s^-1 EARTH SCIENCE > Atmosphere > Atmospheric Winds > Vorticity RELD Relative divergence s^-1 EARTH SCIENCE > Atmosphere > Atmospheric Winds > Convergence/Divergence VUCSH Vertical u shear s^-1 EARTH SCIENCE > Atmosphere > Atmospheric Winds > Wind Shear VVCSH Vertical v shear s^-1 EARTH SCIENCE > Atmosphere > Atmospheric Winds > Wind Shear DIRC Direction of current deg EARTH SCIENCE > Oceans > Ocean Circulation > Ocean Currents SPC Speed of current m s^-1 EARTH SCIENCE > Oceans > Ocean Circulation > Ocean Currents UOGRD u of current m s^-1 EARTH SCIENCE > Oceans > Ocean Circulation > Ocean Currents VOGRD v of current m s^-1 EARTH SCIENCE > Oceans > Ocean Circulation > Ocean Currents SPFH Specific humidity kg kg^-1 EARTH SCIENCE > Atmosphere > Atmospheric Water Vapor > Humidity RH Relative humidity % EARTH SCIENCE > Atmosphere > Atmospheric Water Vapor > Humidity MIXR Humidity mixing ratio kg kg^-1 EARTH SCIENCE > Atmosphere > Atmospheric Water Vapor > Humidity PWAT Precipitable water kg m^-2 EARTH SCIENCE > Atmosphere > Atmospheric Water Vapor > Precipitable Water VAPP Vapor pressure Pa EARTH SCIENCE > Atmosphere > Atmospheric Water Vapor > Water Vapor SATD Saturation deficit Pa EARTH SCIENCE > Atmosphere > Atmospheric Water Vapor > Water Vapor EVP Evaporation kg m^-2 EARTH SCIENCE > Atmosphere > Atmospheric Water Vapor > Evaporation CICE Cloud Ice kg m^-2 EARTH SCIENCE > Atmosphere > Clouds > Cloud Liquid Water/Ice PRATE Precipitation rate kg m^-2 s^-1 EARTH SCIENCE > Atmosphere > Precipitation > Precipitation Rate TSTM Thunderstorm probability % APCP Total precipitation kg m^-2 EARTH SCIENCE > Atmosphere > Precipitation > Precipitation Amount NCPCP Large scale precipitation kg m^-2 EARTH SCIENCE > Atmosphere > Precipitation > Precipitation Amount ACPCP Convective precipitation kg m^-2 EARTH SCIENCE > Atmosphere > Precipitation > Precipitation Amount SRWEQ Snowfall rate water equiv. kg m^-2 s^-1 EARTH SCIENCE > Hydrosphere > Snow/Ice > Snow Water Equivalent WEASD Accum. snow kg m^-2 EARTH SCIENCE > Hydrosphere > Snow/Ice > Snow Water Equivalent SNOD Snow depth m EARTH SCIENCE > Hydrosphere > Snow/Ice > Snow Depth MIXHT Mixed layer depth m TTHDP Transient thermocline depth m EARTH SCIENCE > Oceans > Ocean Temperature > Thermocline MTHD Main thermocline depth m EARTH SCIENCE > Oceans > Ocean Temperature > Thermocline MTHA Main thermocline anomaly m EARTH SCIENCE > Oceans > Ocean Temperature > Thermocline TCDC Total cloud cover % EARTH SCIENCE > Atmosphere > Clouds > Cloud Amount/Frequency CDCON Convective cloud cover % EARTH SCIENCE > Atmosphere > Clouds > Cloud Amount/Frequency LCDC Low level cloud cover % EARTH SCIENCE > Atmosphere > Clouds > Cloud Amount/Frequency MCDC Mid level cloud cover % EARTH SCIENCE > Atmosphere > Clouds > Cloud Amount/Frequency HCDC High level cloud cover % EARTH SCIENCE > Atmosphere > Clouds > Cloud Amount/Frequency CWAT Cloud water kg m^-2 EARTH SCIENCE > Atmosphere > Clouds > Cloud Liquid Water/Ice BLI Best lifted index (to 500 hPa) K SNOC Convective snow kg m^-2 EARTH SCIENCE > Atmosphere > Precipitation > Snow SNOL Large scale snow kg m^-2 EARTH SCIENCE > Atmosphere > Precipitation > Snow WTMP Water temp. K EARTH SCIENCE > Oceans > Ocean Temperature > Sea Surface Temperature EARTH SCIENCE > Oceans > Ocean Temperature > Water Temperature LAND Land-sea coverage (land=1;sea=0) EARTH SCIENCE > Land Surface > Land Use/Land Cover > Land Cover DSLM Deviation of sea level from mean m EARTH SCIENCE > Oceans > Coastal Processes > Sea Level Rise SFCR Surface roughness m EARTH SCIENCE > Land Surface > Topography > Surface Roughness ALBDO Albedo % EARTH SCIENCE > Land Surface > Surface Radiative Properties > Albedo TSOIL Soil temp. K EARTH SCIENCE > Land Surface > Soils > Soil Temperature SOILM Soil moisture content kg m^-2 EARTH SCIENCE > Land Surface > Soils > Soil Moisture/Water Content VEG Vegetation % EARTH SCIENCE > Biosphere > Vegetation > Vegetation Cover SALTY Salinity kg kg^-1 EARTH SCIENCE > Oceans > Salinity/Density > Salinity DEN Density kg m^-3 WATR Water runoff kg m^-2 EARTH SCIENCE > Hydrosphere > Surface Water > Runoff ICEC Ice concentration (ice=1;no ice=0) EARTH SCIENCE > Oceans > Sea Ice > Ice Extent ICETK Ice thickness m EARTH SCIENCE > Oceans > Sea Ice > Ice Depth/Thickness DICED Direction of ice drift deg EARTH SCIENCE > Oceans > Sea Ice > Sea Ice Motion SICED Speed of ice drift m s^-1 EARTH SCIENCE > Oceans > Sea Ice > Sea Ice Motion UICE u of ice drift m s^-1 EARTH SCIENCE > Oceans > Sea Ice > Sea Ice Motion VICE v of ice drift m s^-1 EARTH SCIENCE > Oceans > Sea Ice > Sea Ice Motion ICEG Ice growth rate m s^-1 EARTH SCIENCE > Oceans > Sea Ice > Ice Growth/Melt ICED Ice divergence s^-1 EARTH SCIENCE > Oceans > Sea Ice > Sea Ice Motion SNOM Snow melt kg m^-2 EARTH SCIENCE > Hydrosphere > Snow/Ice > Snow Melt HTSGW Sig height of wind waves and swell m EARTH SCIENCE > Oceans > Ocean Waves > Significant Wave Height WVDIR Direction of wind waves deg EARTH SCIENCE > Oceans > Ocean Waves > Wave Speed/Direction WVHGT Sig height of wind waves m EARTH SCIENCE > Oceans > Ocean Waves > Significant Wave Height WVPER Mean period of wind waves s EARTH SCIENCE > Oceans > Ocean Waves > Wave Period SWDIR Direction of swell waves deg EARTH SCIENCE > Oceans > Ocean Waves > Swells SWELL Sig height of swell waves m EARTH SCIENCE > Oceans > Ocean Waves > Swells SWPER Mean period of swell waves s 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 shortwave (surface) W m^-2 EARTH SCIENCE > Atmosphere > Atmospheric Radiation > Incoming Solar Radiation NLWRS Net longwave (surface) W m^-2 EARTH SCIENCE > Atmosphere > Atmospheric Radiation > Outgoing Longwave Radiation NSWRT Net shortwave (top) W m^-2 EARTH SCIENCE > Atmosphere > Atmospheric Radiation > Incoming Solar Radiation NLWRT Net longwave (top) W m^-2 EARTH SCIENCE > Atmosphere > Atmospheric Radiation > Outgoing Longwave Radiation LWAVR Long wave W m^-2 EARTH SCIENCE > Atmosphere > Atmospheric Radiation > Longwave Radiation SWAVR Short wave W m^-2 EARTH SCIENCE > Atmosphere > Atmospheric Radiation > Shortwave Radiation GRAD Global radiation W m^-2 BRTMP Brightness temperature K EARTH SCIENCE > Spectral/Engineering > Infrared Wavelengths > Brightness Temperature LWRAD Radiance with respect to wave no. W m^-1 sr^-1 SWRAD Radiance with respect ot wave len. W m^-3 sr^-1 LHTFL Latent heat flux W m^-2 EARTH SCIENCE > Atmosphere > Atmospheric Radiation > Heat Flux SHTFL Sensible heat flux W m^-2 EARTH SCIENCE > Atmosphere > Atmospheric Radiation > Heat Flux BLYDP Boundary layer dissipation W m^-2 UFLX Zonal momentum flux N m^-2 VFLX Meridional momentum flux N m^-2 WMIXE Wind mixing energy J IMGD Image data MSLSA Mean sea level pressure (Std Atm) Pa EARTH SCIENCE > Atmosphere > Atmospheric Pressure > Sea Level Pressure MSLET Mean sea level pressure (ETA model) Pa EARTH SCIENCE > Atmosphere > Atmospheric Pressure > Sea Level Pressure LFTX Surface lifted index K 4LFTX Best (4-layer) lifted index K PRESN Pressure (nearest grid point) Pa MCONV Horizontal moisture divergence kg kg^-1 s^-1 VWSH Vertical speed shear 1 s^-1 EARTH SCIENCE > Atmosphere > Atmospheric Winds > Wind Shear PVMW Potential vorticity (mass-weighted) 1/s m^-1 EARTH SCIENCE > Atmosphere > Atmospheric Winds > Vorticity CRAIN Categorical rain (yes=1; no=0) EARTH SCIENCE > Atmosphere > Precipitation > Rain CFRZR Categorical freezing rain (yes=1; no=0) EARTH SCIENCE > Atmosphere > Precipitation > Freezing Rain CICEP Categorical ice pellets (yes=1; no=0) CSNOW Categorical snow (yes=1; no=0) EARTH SCIENCE > Atmosphere > Precipitation > Snow SOILW Volumetric soil moisture (frozen + liquid) EARTH SCIENCE > Land Surface > Soils > Soil Moisture/Water Content PEVPR Potential evaporation rate W m^-2 EARTH SCIENCE > Atmosphere > Atmospheric Water Vapor > Evaporation VEGT Vegetation canopy temperature K EARTH SCIENCE > Biosphere > Vegetation > Canopy Characteristics BARET Bare soil surface skin temperature K EARTH SCIENCE > Land Surface > Land Temperature > Skin Temperature AVSFT Average surface skin temperature EARTH SCIENCE > Land Surface > Land Temperature > Skin Temperature K RADT Effective radiative skin temperature K EARTH SCIENCE > Land Surface > Land Temperature > Skin Temperature SSTOR Surface water storage kg m^-2 LSOIL Liquid soil moisture content (non-frozen) kg m^-2 EARTH SCIENCE > Land Surface > Soils > Soil Moisture/Water Content EWATR Open water evaporation (standing water) W m^-2 EARTH SCIENCE > Atmosphere > Atmospheric Water Vapor > Evaporation CLWMR Cloud water kg kg^-1 EARTH SCIENCE > Atmosphere > Clouds > Cloud Liquid Water/Ice GFLUX Ground Heat Flux W m^-2 EARTH SCIENCE > Atmosphere > Atmospheric Radiation > Heat Flux CIN Convective inhibition J kg^-1 CAPE Convective available potential energy J kg^-1 TKE Turbulent Kinetic Energy J kg^-1 MXSALB Maximum snow albedo % EARTH SCIENCE > Hydrosphere > Snow/Ice > Albedo SOILL Liquid volumetric soil moisture (non-frozen) EARTH SCIENCE > Land Surface > Soils > Soil Moisture/Water Content ASNOW Frozen precipitation (e.g. snowfall) kg m^-2 EARTH SCIENCE > Atmosphere > Precipitation > Snow ARAIN Liquid precipitation (rainfall) kg m^-2 EARTH SCIENCE > Atmosphere > Precipitation > Rain GWREC Groundwater recharge kg m^-2 EARTH SCIENCE > Hydrosphere > Surface Water > Aquifer Recharge QREC Flood plain recharge kg m^-2 SNOWT Snow temperature, depth-avg K VBDSF Visible beam downward solar flux W m^-2 EARTH SCIENCE > Atmosphere > Atmospheric Radiation > Incoming Solar Radiation VDDSF Visible diffuse downward solar flux W m^-2 EARTH SCIENCE > Atmosphere > Atmospheric Radiation > Incoming Solar Radiation NBDSF Near IR beam downward solar flux W m^-2 EARTH SCIENCE > Atmosphere > Atmospheric Radiation > Incoming Solar Radiation NDDSF Near IR diffuse downward solar flux W m^-2 EARTH SCIENCE > Atmosphere > Atmospheric Radiation > Incoming Solar Radiation SNFALB Snow-free albedo % EARTH SCIENCE > Atmosphere > Atmospheric Radiation > Albedo RLYRS Number of soil layers in root zone FLX Momentum flux N/m2 m LMH Mass point model surface LMV Velocity point model surface MLYNO Model layer number (from bottom up) NLAT Latitude (-90 to +90) deg ELON East longitude (0-360) deg ICMR Ice mixing ratio kg kg^-1 ACOND Aerodynamic conductance m s^-1 SNOAG Snow age s CCOND Canopy conductance m s^-1 LAI Leaf area index (0-9) SFCRH Roughness length for heat m SALBD Snow albedo (over snow cover area only) % NDVI Normalized Difference Vegetation Index DRIP Rate of water dropping from canopy to gnd kg m^-2 EARTH SCIENCE > Biosphere > Vegetation > Canopy Characteristics LANDN Land-sea coverage (nearest neighbor) HLCY Storm relative helicity m^2 s^-2 NLATN Latitude (nearest neigbhbor) (-90 to +90) deg ELONN East longitude (nearest neigbhbor) (0-360) deg CPOFP Prob. of frozen precipitation % USTM u-component of storm motion m s^-1 VSTM v-component of storm motion m s^-1 SBSNO Sublimation (evaporation from snow) W m^-2 EARTH SCIENCE > Atmosphere > Atmospheric Water Vapor > Sublimation EVBS Direct evaporation from bare soil W m^-2 EARTH SCIENCE > Atmosphere > Atmospheric Water Vapor > Evaporation EVCW Canopy water evaporation W m^-2 EARTH SCIENCE > Biosphere > Vegetation > Canopy Characteristics APCPN Total precipitation (nearest grid point) kg m^-2 EARTH SCIENCE > Atmosphere > Precipitation > Precipitation Amount RSMIN Minimal stomatal resistance s m^-1 DSWRF Downward shortwave radiation flux W m^-2 EARTH SCIENCE > Atmosphere > Atmospheric Radiation > Shortwave Radiation DLWRF Downward longwave radiation flux W m^-2 EARTH SCIENCE > Atmosphere > Atmospheric Radiation > Longwave Radiation ACPCPN Convective precipitation (nearest grid point) kg m^-2 MSTAV Moisture availability % SFEXC Exchange coefficient (kg m^-3)(m s^-1) TRANS Transpiration W m^-2 USWRF Upward shortwave radiation flux W m^-2 EARTH SCIENCE > Atmosphere > Atmospheric Radiation > Shortwave Radiation ULWRF Upward longwave radiation flux W m^-2 EARTH SCIENCE > Atmosphere > Atmospheric Radiation > Longwave Radiation CDLYR Non-convective cloud % EARTH SCIENCE > Atmosphere > Clouds > Cloud Amount/Frequency CPRAT Convective precip. rate kg m^-2 s^-1 EARTH SCIENCE > Atmosphere > Precipitation > Precipitation Rate TTRAD Temp. tendency by all radiation K s^-1 EARTH SCIENCE > Atmosphere > Atmospheric Temperature > Temperature Tendency HGTN Geopotential Height (nearest grid point) gpm WILT Wilting point FLDCP Field Capacity HPBL Planetary boundary layer height m EARTH SCIENCE > Atmosphere > Altitude > Planetary Boundary Layer Height SLTYP Surface slope type CNWAT Plant canopy surface water kg m^-2 EARTH SCIENCE > Biosphere > Vegetation > Canopy Characteristics SOTYP Soil type EARTH SCIENCE > Agriculture > Soils > Soil Classification VGTYP Vegetation type EARTH SCIENCE > Biosphere > Vegetation > Vegetation Cover BMIXL Blackadar's mixing length scale m AMIXL Asymptotic mixing length scale m PEVAP Potential evaporation kg m^-2 EARTH SCIENCE > Atmosphere > Atmospheric Water Vapor > Evaporation SNOHF Snow phase-change heat flux W m^-2 SMREF Transpiration stress-onset (soil moisture) SMDRY Direct evaporation cease (soil moisture) EARTH SCIENCE > Atmosphere > Atmospheric Water Vapor > Evaporation WVINC Water vapor added by precip assimilation kg m^-2 WCINC Water condensate added by precip assimilaition kg m^-2 BGRUN Subsurface runoff (baseflow) kg m^-2 SSRUN Surface runoff (non-infiltrating) kg m^-2 EARTH SCIENCE > Hydrosphere > Surface Water > Runoff WVCONV Water vapor flux convergence (vertical int) kg m^-2 SNOWC Snow cover % EARTH SCIENCE > Hydrosphere > Snow/Ice > Snow Cover SNOT Snow temperature K POROS Soil porosity EARTH SCIENCE > Land Surface > Soils > Soil Porosity WCCONV Water condensate flux convergence (vertical int) kg m^-2 WVUFLX Water vapor zonal flux (vertical int) kg m^-1 EARTH SCIENCE > Atmosphere > Atmospheric Water Vapor > Water Vapor WVVFLX Water vapor meridional flux (vertical int) kg m^-1 EARTH SCIENCE > Atmosphere > Atmospheric Water Vapor > Water Vapor WCUFLX Water condensate zonal flux (vertical int) kg m^-1 WCVFLX Water condensate meridional flux (vertical int) kg m^-1 RCS Solar parameter in canopy conductance EARTH SCIENCE > Biosphere > Vegetation > Canopy Characteristics RCT Temperature parameter in canopy conductance EARTH SCIENCE > Biosphere > Vegetation > Canopy Characteristics RCQ Humidity parameter in canopy conductance EARTH SCIENCE > Biosphere > Vegetation > Canopy Characteristics RCSOL Soil moisture parameter in canopy conductance EARTH SCIENCE > Biosphere > Vegetation > Canopy Characteristics SWHR Solar radiative heating K s^-1 EARTH SCIENCE > Atmosphere > Atmospheric Radiation > Atmospheric Heating LWHR Longwave radiative heating K s^-1 EARTH SCIENCE > Atmosphere > Atmospheric Radiation > Atmospheric Heating CD Surface drag coefficient FRICV Surface friction velocity m s^-1 RI Richardson number