NCEP GRIB TABLE 2 (from NCEP Office Note 388) VALUE PARAMETER UNITS ABBREV 000 Reserved 001 002 003 004 005 006 007 008 009 010 Pressure Pressure reduced to MSL Pressure tendency Potential vorticity ICAO Standard Atmosphere Reference Height Geopotential Geopotential height Geometric height Standard deviation of height Total ozone Pa Pa Pa/s K m2/kg/s m m2/s2 gpm m m Dobson PRES PRMSL PTEND PVORT ICAHT GP HGT DIST HSTDV TOZNE 011 012 013 014 K K K K TMP VTMP POT EPOT 015 016 017 018 019 020 Temperature Virtual temperature Potential temperature Pseudo-adiabatic potential temperature or equivalent potential temperature Maximum temperature Minimum temperature Dew point temperature Dew point depression (or deficit) Lapse rate Visibility K K K K K/m m TMAX TMIN DPT DEPR LAPR VIS 021 022 023 024 025 026 027 028 029 030 Radar Spectra (1) Radar Spectra (2) Radar Spectra (3) Parcel lifted index (to 500 hPa) Temperature anomaly Pressure anomaly Geopotential height anomaly Wave Spectra (1) Wave Spectra (2) Wave Spectra (3) K K Pa gpm - RDSP1 RDSP2 RDSP3 PLI TMPA PRESA GPA WVSP1 WVSP2 WVSP3 031 032 033 034 035 Wind direction (from which blowing) Wind speed u-component of wind v-component of wind Stream function deg true m/s m/s m/s m2/s WDIR WIND UGRD VGRD STRM 036 037 038 039 040 Velocity potential Montgomery stream function Sigma coordinate vertical velocity Vertical velocity (pressure) Vertical velocity (geometric) m2/s m2/s2 1/s Pa/s m/s VPOT MNTSF SGCVV VVEL DZDT 041 042 043 044 045 046 047 048 049 050 Absolute vorticity Absolute divergence Relative vorticity Relative divergence Vertical u-component shear Vertical v-component shear Direction of current Speed of current u-component of current v-component of current 1/s 1/s 1/s 1/s 1/s 1/s deg true m/s m/s m/s ABSV ABSD RELV RELD VUCSH VVCSH DIRC SPC UOGRD VOGRD 051 052 053 054 055 056 057 058 059 060 Specific humidity Relative humidity Humidity mixing ratio Precipitable water Vapor pressure Saturation deficit Evaporation Cloud Ice Precipitation rate Thunderstorm probability kg/kg % kg/kg kg/m2 Pa Pa kg/m2 kg/kg kg/m2/s % SPFH RH MIXR PWAT VAPP SATD EVP CICE PRATE TSTM 061 062 063 064 065 066 067 068 069 070 Total precipitation Large scale precipitation (non-conv.) Convective precipitation Snowfall rate water equivalent Water equiv. of accum. snow depth Snow depth Mixed layer depth Transient thermocline depth Main thermocline depth Main thermocline anomaly kg/m2 kg/m2 kg/m2 kg/m2/s kg/m2 m m m m m APCP NCPCP ACPCP SRWEQ WEASD SNOD MIXHT TTHDP MTHD MTHA 071 072 073 074 075 076 077 Total cloud cover Convective cloud cover Low cloud cover Medium cloud cover High cloud cover Cloud water Best lifted index (to 500 hPa) % % % % % kg/kg K TCDC CDCON LCDC MCDC HCDC CWAT BLI 078 079 080 Convective snow Large scale snow Water Temperature kg/m2 kg/m2 K SNOC SNOL WTMP 081 082 083 084 085 086 087 088 089 090 Land cover (land=1, sea=0) Deviation of sea level from mean Surface roughness Albedo Soil temperature Soil moisture content Vegetation Salinity Density Water runoff proportion m m % K kg/m2 % kg/kg kg/m3 kg/m2 LAND DSLM SFCR ALBDO TSOIL SOILM VEG SALTY DEN WATR 091 092 093 094 095 096 097 098 099 100 Ice cover (ice=1, no ice=0) Ice thickness Direction of ice drift Speed of ice drift u-component of ice drift v-component of ice drift Ice growth rate Ice divergence Snow melt Significant height of combined wind waves and swell proportion m deg true m/s m/s m/s m/s 1/s kg/m2 m ICEC ICETK DICED SICED UICE VICE ICEG ICED SNOM HTSGW 101 102 103 104 105 106 107 108 109 110 Direction of wind waves (from which) Significant height of wind waves Mean period of wind waves Direction of swell waves Significant height of swell waves Mean period of swell waves Primary wave direction Primary wave mean period Secondary wave direction Secondary wave mean period deg true m s deg true m s deg true s deg true s WVDIR WVHGT WVPER SWDIR SWELL SWPER DIRPW PERPW DIRSW PERSW 111 112 113 114 115 116 117 118 Net short-wave radiation (surface) Net long wave radiation (surface) Net short-wave radiation (top of atmosphere) Net long wave radiation (top of atmosphere) Long wave radiation flux Short wave radiation flux Global radiation flux Brightness temperature W/m2 W/m2 W/m2 W/m2 W/m2 W/m2 W/m2 K NSWRS NLWRS NSWRT NLWRT LWAVR SWAVR GRAD BRTMP 119 120 Radiance (with respect to wave number) Radiance (with respect to wave length) W/m/sr W/m3/sr LWRAD SWRAD 121 122 123 124 125 126 127 Latent heat net flux Sensible heat net flux Boundary layer dissipation Momentum flux, u component Momentum flux, v component Wind mixing energy Image data W/m2 W/m2 W/m2 N/m2 N/m2 J LHTFL SHTFL BLYDP UFLX VFLX WMIXE UNITS ABBREV VALUE PARAMETER 128 - 254 Reserved for use by originating center (NWS/NCEP usage as follows): 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 Mean Sea Level Pressure (Standard Atmosphere Reduction) Mean Sea Level Pressure (MAPS System Reduction) Mean Sea Level Pressure (Eta Model Reduction) Pa MSLSA Pa MSLMA Pa MSLET Surface lifted index Best (4 layer) lifted index K index Sweat index Horizontal moisture divergence Vertical speed shear 3-hr pressure tendency Std. Atmos. Reduction Brunt-Vaisala frequency (squared) Potential vorticity (density weighted) Categorical rain (yes=1; no=0) K K K K kg/kg/s 1/s Pa/s LFTX 4LFTX KX SX MCONV VWSH TSLSA 1/s2 1/s/m non-dim BVF2 PVMW CRAIN Categorical freezing rain (yes=1; no=0) Categorical ice pellets (yes=1; no=0) Categorical snow (yes=1; no=0) Volumetric soil moisture content Potential evaporation rate Cloud workfunction Zonal flux of gravity wave stress Meridional flux of gravity wave stress Potential vorticity Covariance between meridional and zonal components of the wind. Defined as [uv]-[u][v], where non-dim non-dim non-dim fraction W/m2 J/kg N/m2 N/m2 m2/s/kg m2/s2 CFRZR CICEP CSNOW SOILW PEVPR CWORK U-GWD V-GWD PV COVMZ "[]" indicates the mean over the indicated time span. 151 K*m/s COVTZ K*m/s COVTM kg/kg kg/kg W/m2 J/kg J/kg J/kg Pa CLWMR O3MR GFLUX CIN CAPE TKE CONDP 160 Covariance between temperature and zonal component of the wind. Defined as [uT]-[u][T], where "[]" indicates the mean over the indicated time span. Covariance between temperature and meridional component of the wind. Defined as [vT]-[v][T], where "[]" indicates the mean over the indicated time span. Cloud water Ozone mixing ratio Ground Heat Flux Convective inhibition Convective Available Potential Energy Turbulent Kinetic Energy Condensation pressure of parcel lifted from indicated surface Clear Sky Upward Solar Flux W/m2 CSUSF 161 162 163 164 165 166 167 168 169 170 Clear Sky Downward Solar Flux Clear Sky upward long wave flux Clear Sky downward long wave flux Cloud forcing net solar flux Cloud forcing net long wave flux Visible beam downward solar flux Visible diffuse downward solar flux Near IR beam downward solar flux Near IR diffuse downward solar flux Rain water mixing ratio W/m2 W/m2 W/m2 W/m2 W/m2 W/m2 W/m2 W/m2 W/m2 kg/kg CSDSF CSULF CSDLF CFNSF CFNLF VBDSF VDDSF NBDSF NDDSF RWMR 171 172 173 174 175 176 177 178 179 180 Snow mixing ratio Momentum flux Mass point model surface Velocity point model surface Model layer number (from bottom up) Latitude (-90 to +90) East longitude (0-360) Ice mixing ratio Graupel mixing ratio Surface wind gust kg/kg N/m2 non-dim non-dim non-dim deg deg kg/kg kg/kg m/s SNMR MFLX LMH LMV MLYNO NLAT ELON ICMR GRMR GUST 181 x-gradient of log pressure 1/m LPSX 152 153 154 155 156 157 158 159 182 183 184 185 186 187 188 189 190 y-gradient of log pressure x-gradient of height y-gradient of height Turbulence Potential Forecast Index Total Icing Potential Diagnostic Lightning Rate of water dropping from canopy to ground Virtual potential temperature Storm relative helicity 1/m m/m m/m non-dim non-dim non-dim kg/m2 K m2/s2 LPSY HGTX HGTY TPFI TIPD LTNG DRIP VPTMP HLCY 191 192 Probability from ensemble Probability from ensemble normalized with respect to climate expectancy Probability of precipitation Percent of frozen precipitation Probability of freezing precipitation u-component of storm motion v-component of storm motion Number concentration for ice particles Direct evaporation from bare soil Canopy water evaporation numeric numeric PROB PROBN % % % m/s m/s W/m2 W/m2 POP CPOFP CPOZP USTM VSTM NCIP EVBS EVCW % non-dim ICWAT CWDI W/m2 W/m2 J/m2 DSWRF DLWRF UVI 207 208 209 210 Ice-free water surface Convective weather detection index VAFTAD Downward short wave rad. flux Downward long wave rad. flux Ultra violet index (1 hour integration centered at solar noon) Moisture availability Exchange coefficient No. of mixed layers next to surface Transpiration % (kg/m3)(m/s) integer W/m2 MSTAV SFEXC MIXLY TRANS 211 212 213 214 215 216 217 218 219 220 Upward short wave rad. flux Upward long wave rad. flux Amount of non-convective cloud Convective Precipitation rate Temperature tendency by all physics Temperature tendency by all radiation Temperature tendency by non-radiation physics Precip. index(0.0-1.00)(see note) Std. dev. of IR T over 1x1 deg area Natural log of surface pressure W/m2 W/m2 % kg/m2/s K/s K/s K/s fraction K ln(kPa) USWRF ULWRF CDLYR CPRAT TTDIA TTRAD TTPHY PREIX TSD1D NLGSP 221 Planetary boundary layer height m HPBL 193 194 195 196 197 198 199 200 201 202 203 204 205 206 222 223 224 225 226 227 228 229 230 5-wave geopotential height Plant canopy surface water Soil type (as in Zobler) Vegetation type (as in SiB) Blackadar's mixing length scale Asymptotic mixing length scale Potential evaporation Snow phase-change heat flux 5-wave geopotential height anomaly gpm kg/m2 Integer (0-9) Integer (0-13) m m kg/m2 W/m2 gpm 5WAVH CNWAT SOTYP VGTYP BMIXL AMIXL PEVAP SNOHF 5WAVA 231 232 233 234 235 236 Convective cloud mass flux Downward total radiation flux Upward total radiation flux Baseflow-groundwater runoff Storm surface runoff Supercooled Large Droplet (SLD) Icing Potential Diagnostic Total ozone Snow cover Snow temperature Covariance between temperature and vertical component of the wind. Defined as [wT]-[w][T], where "[]" indicates the mean over the indicated time span. Pa/s W/m2 W/m2 kg/m2 kg/m2 non-dim MFLUX DTRF UTRF BGRUN SSRUN SIPD Kg/m2 percent K K m/s 03TOT SNOWC SNOT COVTW 241 242 243 244 245 246 247 248 249 250 Large scale condensat. heat rate Deep convective heating rate Deep convective moistening rate Shallow convective heating rate Shallow convective moistening rate Vertical diffusion heating rate Vertical diffusion zonal acceleration Vertical diffusion meridional accel Vertical diffusion moistening rate Solar radiative heating rate K/s K/s kg/kg/s K/s kg/kg/s K/s m/s2 m/s2 kg/kg/s K/s LRGHR CNVHR CNVMR SHAHR SHAMR VDFHR VDFUA VDFVA VDFMR SWHR 251 252 253 254 Long wave radiative heating rate Drag coefficient Friction velocity Richardson number K/s non-dim m/s non-dim LWHR CD FRICV RI 255 Missing 237 238 239 240