NCEP Parameter Code Table 131 1 PRES Pressure Pa 2 PRMSL Pressure reduced to MSL Pa 7 HGT Geopotential height gpm 11 TMP Temperature K 13 POT Potential temp. K 17 DPT Dew point temp. K 20 VIS Visibility m 33 UGRD u wind m s^-1 34 VGRD v wind m s^-1 39 VVEL Vertical velocity (pressure) Pa s^-1 51 SPFH Specific humidity kg kg^-1 52 RH Relative humidity % 54 PWAT Precipitable water kg m^-2 57 EVP Evaporation kg m^-2 59 PRATE Precipitation rate kg m^-2 s^-1 61 APCP Total precipitation kg m^-2 63 ACPCP Convective precipitation kg m^-2 65 WEASD Accum. snow kg m^-2 66 SNOD Snow depth m 71 TCDC Total cloud cover % 72 CDCON Convective cloud cover % 73 LCDC Low level cloud cover % 74 MCDC Mid level cloud cover % 75 HCDC High level cloud cover % 81 LAND Land-sea coverage (land=1;sea=0) 83 SFCR Surface roughness m 84 ALBDO Albedo % 85 TSOIL Soil temp. K 86 SOILM Soil moisture content kg m^-2 87 VEG Vegetation % 99 SNOM Snow melt kg m^-2 121 LHTFL Latent heat flux W m^-2 122 SHTFL Sensible heat flux W m^-2 124 UFLX Zonal momentum flux N m^-2 125 VFLX Meridional momentum flux N m^-2 130 MSLET Mean sea level pressure (ETA model) Pa 131 LFTX Surface lifted index K 132 4LFTX Best (4-layer) lifted index K 134 PRESN Pressure (nearest grid point) Pa 135 MCONV Horizontal moisture divergence kg kg^-1 s^-1 136 VWSH Vertical speed shear 1 s^-1 140 CRAIN Categorical rain (yes=1; no=0) 141 CFRZR Categorical freezing rain (yes=1; no=0) 142 CICEP Categorical ice pellets (yes=1; no=0) 143 CSNOW Categorical snow (yes=1; no=0) 144 SOILW Volumetric soil moisture (frozen + liquid) 153 CLWMR Cloud water kg kg^-1 155 GFLUX Ground Heat Flux W m^-2 156 CIN Convective inhibition J kg^-1 157 CAPE Convective available potential energy J kg^-1 158 TKE Turbulent Kinetic Energy J kg^-1 159 MXSALB Maximum snow albedo % 160 SOILL Liquid volumetric soil moisture (non-frozen) 170 SNFALB Snow-free albedo % 171 RLYRS Number of soil layers in root zone 176 NLAT Latitude (-90 to +90) deg 177 ELON East longitude (0-360) deg 178 ICMR Ice mixing ratio kg kg^-1 181 CCOND Canopy conductance m s^-1 190 HLCY Storm relative helicity m^2 s^-2 191 NLATN Latitude (nearest neigbhbor) (-90 to +90) deg 192 ELONN East longitude (nearest neigbhbor) (0-360) deg 196 USTM u-component of storm motion m s^-1 197 VSTM v-component of storm motion m s^-1 202 APCPN Total precipitation (nearest grid point) kg m^-2 203 RSMIN Minimal stomatal resistance s m^-1 204 DSWRF Downward shortwave radiation flux W m^-2 205 DLWRF Downward longwave radiation flux W m^-2 207 MSTAV Moisture availability % 208 SFEXC Exchange coefficient (kg m^-3)(m s^-1) 211 USWRF Upward shortwave radiation flux W m^-2 212 ULWRF Upward longwave radiation flux W m^-2 213 CDLYR Non-convective cloud % 218 HGTN Geopotential Height (nearest grid point) gpm 219 WILT Wilting point 221 HPBL Planetary boundary layer height m 222 SLTYP Surface slope type 223 CNWAT Plant canopy surface water kg m^-2 224 SOTYP Soil type 225 VGTYP Vegetation type 226 BMIXL Blackadar's mixing length scale m 228 PEVAP Potential evaporation kg m^-2 229 SNOHF Snow phase-change heat flux W m^-2 230 SMREF Transpiration stress-onset (soil moisture) 231 SMDRY Direct evaporation cease (soil moisture) 232 WVINC Water vapor added by precip assimilation kg m^-2 233 WCINC Water condensate added by precip assimilaition kg m^-2 234 BGRUN Subsurface runoff (baseflow) kg m^-2 235 SSRUN Surface runoff (non-infiltrating) kg m^-2 237 WVCONV Water vapor flux convergence (vertical int) kg m^-2 238 SNOWC Snow cover % 240 POROS Soil porosity 241 WCCONV Water condensate flux convergence (vertical int) kg m^-2 242 WVUFLX Water vapor zonal flux (vertical int) kg m^-1 243 WVVFLX Water vapor meridional flux (vertical int) kg m^-1 244 WCUFLX Water condensate zonal flux (vertical int) kg m^-1 245 WCVFLX Water condensate meridional flux (vertical int) kg m^-1 246 RCS Solar parameter in canopy conductance 247 RCT Temperature parameter in canopy conductance 248 RCQ Humidity parameter in canopy conductance 249 RCSOL Soil moisture parameter in canopy conductance 252 CD Surface drag coefficient 253 FRICV Surface friction velocity m s^-1