NCEP Parameter Code Table 2 1 PRES Pressure Pa 2 PRMSL Pressure reduced to MSL Pa 3 PTEND Pressure tendency Pa s^-1 7 HGT Geopotential height gpm 11 TMP Temperature K 12 VTMP Virtual temperature K 13 POT Potential temperature K 15 TMAX Maximum temperature K 16 TMIN Minimum temperature K 33 UGRD u-component of wind m s^-1 34 VGRD v-component of wind m s^-1 35 STRM Stream function m^2 s^-1 36 VPOT Velocity potential m^2 s^-1 37 MNTSF Montgomery stream function m^2 s^-2 39 VVEL Vertical velocity (pressure) Pa s^-1 41 ABSV Absolute vorticity s^-1 43 RELV Relative vorticity s^-1 44 RELD Relative divergence s^-1 51 SPFH Specific humidity kg kg^-1 52 RH Relative humidity % 54 PWAT Precipitable water kg m^-2 59 PRATE Precipitation rate kg m^-2 s^-1 64 SRWEQ Snowfall rate water equivalent kg m^-2 s^-1 65 WEASD Water equivalent of accumulated snow depth kg m^-2 71 TCDC Total cloud cover % 72 CDCON Convective cloud cover % 81 LAND Land cover fraction 83 SFCR Surface roughness m 84 ALBDO Albedo % 90 RUNOF Water runoff kg m^-2 91 ICEC Ice cover fraction 111 NSWRS Net short-wave radiation flux (surface) W m^-2 112 NLWRS Net longwave radiation flux (surface) W m^-2 121 LHTFL Latent heat flux W m^-2 122 SHTFL Sensible heat flux W m^-2 124 UFLX Momentum flux, u-component N m^-2 125 VFLX Momentum flux, v-component N m^-2 131 LFTX Surface lifted index K 132 4LFTX Best (4 layer) lifted index K 136 VSSH Vertical speed shear s^-1 138 BVF2 Brunt-Vaisala frequency (squared) s^-2 144 SOILW Volumetric soil moisture content fraction 145 PEVPR Potential evaporation rate W m^-2 146 CWORK Cloud workfunction J kg^-1 147 U-GWD Zonal flux of gravity wave stress N m^-2 148 V-GWD Meridional flux of gravity wave stress N m^-2 149 PV Potential vorticity m^2 s^-1 kg^-1 155 GFLUX Ground heat flux W m^-2 160 CSUSF Clear sky upward solar flux W m^-2 161 CSDSF Clear sky downward solar flux W m^-2 162 CSULF Clear sky upward longwave flux W m^-2 163 CSDLF Clear sky downward longwave flux W m^-2 164 CFNSF Cloud forcing net solar flux W m^-2 165 CFNLF Cloud forcing net longwave flux W m^-2 166 VBDSF Visible beam downward solar flux W m^-2 167 VDDSF Visible diffuse downward solar flux W m^-2 168 NBDSF Near IR beam downward solar flux W m^-2 169 NDDSF Near IR diffuse downward solar flux W m^-2 175 SGLYR Nearby model layer number (from bottom up) 178 UMAS Mass weighted u 179 VMAS Mass weighted v 181 LPSX x-gradient of log pressure m^-1 182 LPSY y-gradient of log pressure m^-1 183 HGTX x-gradient of height m m^-1 184 HGTY y-gradient of height m m^-1 190 CBUW Covariance between u and omega [m s^-1]*[Pa s^-1] 191 CBVW Covariance between v and omega [m s^-1]*[Pa s^-1] 192 CBUQ Covariance between u and specific humidity [m s^-1]*[gm gm^-1] 193 CBVQ Covariance between v and specific humidity [m s^-1]*[gm gm^-1] 194 CBTW Covariance between T and omega [K]*[Pa s^-1] 195 CBQW Covariance between specific humidity and omega [gm gm^-1]*[Pa s^-1] 196 CBMZW Covariance between v and u m^2 s^-2 197 CBTZW Covariance between u and T [K]*[m s^-1] 198 CBTMW Covariance between v and T [K]*[m s^-1] 204 DSWRF Downward shortwave radiation flux W m^-2 205 DLWRF Downward longwave radiation flux W m^-2 211 USWRF Upward shortwave radiation flux W m^-2 212 ULWRF Upward longwave radiation flux W m^-2 214 CPRAT Convective precipitation rate kg m^-2 s^-1 225 VGTYP Vegetation type (as in SiB) 229 SNOHF Snow phase-change heat flux W m^-2 230 5WAVA 5-wave geopotential height anomaly 241 LRGHR Large scale condensation heat rate K s^-1 242 CNVHR Deep convective heating rate K s^-1 243 CNVMR Deep convective moistening rate kg kg^-1 s^-1 244 SHAHR Shallow convective heating rate K s^-1 245 SHAMR Shallow convective moistening rate kg kg^-1 s^-1 246 VDFHR Vertical diffusion heating rate K s^-1 247 VDFUA Vertical diffusion zonal acceleration m s^-2 248 VDFVA Vertical diffusion meridional acceleration m s^-2 249 VDFMR Vertical diffusion moistening rate kg kg^-1 s^-1 250 SWHR Solar radiative heating rate K s^-1 251 LWHR Long wave radiative heating rate K s^-1 NCEP Parameter Code Table 1 1 PRES Pressure Pa 41 ABS V Absolute vorticity s^-1 178 UMAS Mass weighted u 179 VMAS Mass weighted v