GRIB Table 2 Code Figure Field Parameter Unit =========== =============== ==== 000 Reserved * 001 Pressure Pa 002 Pressure reduced to MSL Pa 003 Pressure tendency Pa/s 004 * * 005 * * 006 Geopotential m*m/s/s 007 Geopotential height gpm 008 Geometrical height m 009 Standard deviation of height m 010 * * 011 Temperature K 012 Virtual temperature K 013 Potential temperature K 014 Pseudo-adiabatic potential temperature K 015 Maximum temperature K 016 Minimum temperature K 017 Dew-point temperature K 018 Dew-point depression (or deficit) K 019 Lapse rate K/m 020 Visibility m 021 Radar spectra (1) - 022 Radar spectra (2) - 023 Radar spectra (3) - 024 Parcel lifted index (to 500 hPa) K 025 Temperature anomaly K 026 Pressure anomaly Pa 027 Geopotential height anomaly gpm 028 Wave spectra (1) - 029 Wave spectra (2) - 030 Wave spectra (3) - 031 Wind direction Degree true 032 Wind speed m/s 033 u-component of wind m/s 034 v-component of wind m/s 035 Stream function m*m/s 036 Velocity potential m*m/s 037 Montgomery stream function m*m/s/s 038 Sigma co-ordinate vertical velocity /s 039 Vertical velocity Pa/s 040 Vertical velocity m/s 041 Absolute vorticity /s 042 Absolute divergence /s 043 Relative vorticity /s 044 Relative divergence /s 045 Vertical u-component shear /s 046 Vertical v-component shear /s 047 Direction of current Degree true 048 Speed of current m/s 049 u-component of current m/s 050 v-component of current m/s 051 Specific humitity kg/kg 052 Relative humidity % 053 Humidity mixing ratio kg/kg 054 Precipitable water kg/m/m 055 Vapour pressure Pa 056 Saturation deficit Pa 057 Evaporation kg/m/m 058 Cloud ice kg/m/m 059 Precipitation rate kg/mē/s 060 Thunderstorm probability % 061 Total precipitation kg/mē 062 Large scale precipitation kg/m/m 063 Convective precipitation kg/m/m 064 Snowfall rate water equivalent kg/m/m/s 065 Water equivalent of accumulated snow depth kg/m/m 066 Snow depth m 067 Mixed layer depth m 068 Transient thermocline depth m 069 Main thermocline depth m 070 Main thermocline anomaly m 071 Total cloud cover % 072 Convective cloud cover % 073 Low cloud cover % 074 Medium cloud cover % 075 High cloud cover % 076 Cloud water kg/m/m 077 Best lifted index (to 500 hPa) K 078 Convective snow kg/m/m 079 Large scale snow kg/m/m 080 Water temperature K 081 Land cover (1 = land, 0 = sea) Proportion 082 Deviation of sea-level from mean m 083 Surface roughness m 084 Albedo % 085 Soil temperature K 086 Soil moisture content kg/m/m 087 Vegetation % 088 Salinity kg/kg 089 Density kg/m/m/m 090 Water run-off kg/m/m 091 Ice cover (1 = ice, 0 = no ice) Proportion 092 Ice thickness m 093 Direction of ice drift Degree true 094 Speed of ice drift m/s 095 u-component of ice drift m/s 096 v-component of ice drift m/s 097 Ice growth rate m/s 098 Ice divergence /s 099 Snow melt kg/m/m 100 Significant height of combined wind waves and swell m 101 Direction of wind waves Degree true 102 Significant height of wind waves m 103 Mean period of wind waves s 104 Direction of swell waves Degree true 105 Significant height of swell waves m 106 Mean period of swell waves s 107 Primary wave direction Degree true 108 Primary wave mean period s 109 Secondary wave direction Degree true 110 Secondary wave mean period s 111 Net short-wave radiation (surface) W/m/m 112 Net long-wave radiation (surface) W/m/m 113 Net short-wave radiation (top of atmosphere) W/m/m 114 Net long-wave radiation (top of atmosphere) W/m/m 115 Long-wave radiation W/m/m 116 Short-wave radiation W/m/m 117 Global radiation W/m/m 118 * * 119 * * 120 * * 121 Latent heat flux W/m/m 122 Sensible heat flux W/m/m 123 Boundary layer dissipation W/m/m 124 Momentum flux, u-component N/m/m 125 Momentum flux, v-component N/m/m 126 Wind mixing energy J 127 Image data * 128 Frequency of wind speed < 1 meter/second % 129 Cloud Mixing Ratio kg/kg 130 Geometric depth of level m 131 Diurnal sea-surface temperature warming K 132 East wind frequency % 133 Exner pressure perturbation * 134 Depth difference between tau 0 and forecast m 135 Sea-surface temp diff between tau 0 and forecast K 136 Frequency of wind speed > 34 knots % 137 Temperature of ground or sea K 138 Ground temperature K 139 Heavy superstructure icing frequency % 140 ice crystal mixing ratio kg/kg 141 ice pressure N/m 142 light superstructure icing frequency % 143 latent + sensible + IR heat flux W/m/m 144 mean 24 hour wind stress Pa 145 mean air-sea temperature difference K 146 mean air temperature K 147 mean geometric depth of level m 148 mean dewpoint K 149 mean east wind speed m/s 150 mean speed of all winds > 34 knots m/s 151 mean geopotential height of level gpm 152 mean north wind speed m/s 153 mean northeast wind speed m/s 154 mean northwest wind speed m/s 155 mean pressure Pa 156 mean south wind speed m/s 157 mean southeast wind speed m/s 158 mean sound convergence zone index numeric(0-3) 159 mean sound speed difference m/s 160 mean sea surface temperature (SST) K 161 mean southwest wind speed m/s 162 mean temperature gradient K/m 163 mean west wind speed m/s 164 mean wave direction Degrees true 165 mean wave height m 166 mean wave period s 167 mean wet-bulb temperature K 168 mean wind direction Degrees true 169 mean wind speed m/s 170 mean wind u component (east-west) m/s 171 mean wind v component (north-south) m/s 172 north wind frequency % 173 northeast wind frequency % 174 northwest wind frequency % 175 rain drop mixing ratio kg/kg 176 south wind frequency m/s 177 std deviation of air density kg/m/m/m 178 std deviation of air-sea temperature diff K 179 std deviation of air temperature K 180 std deviation of dewpoint K 181 std deviation of geopotential height of level gpm 182 std deviation of pressure Pa 183 std deviation of SST K 184 std deviation of wave height m 185 std deviation of wet-bulb temperature K 186 std deviation of wind direction Degrees true 187 std deviation of wind speed m/s 188 std deviation of wind u component (east-west) m/s 189 std deviation of wind v component (north-south) m/s 190 southeast wind frequency % 191 sea temp diff between analaysis and climatology K 192 sound convergence zone index numeric(0-3) 193 sound speed m/s 194 sound speed gradient (dC/dz) m/s/m 195 snow mixing ratio kg/kg 196 solar radiance W/m/m 197 solar radiance heat flux W/m/m 198 southwest wind frequency m/s 199 temperature difference K 200 temperature gradient (dT/dz) K/m 201 terrain height m 202 geometric thickness of layer m 203 total heat flux W/m/m 204 turbulent kinetic energy m*m/s/s 205 visual wave height m 206 west wind frequency m/s 207 white cap probability % 208 wind gust speed m/s 209 wind shear speed m/s 210 wind stress u component (east-west) m/s 211 wind stress v component (north-south) m/s 212 vertical (w) component of current m/s 213 friction velocity m/s 214 u-comp depth-averaged current m/s 215 v-comp depth-averaged current m/s 216 ocean bathymetry m 217 latitude deg 218 longitude deg 238 Snow Cover (imssnow.grb) % 250 Reserved for sub-table extension use * 251 Reserved for sub-table extension use * 252 Reserved for sub-table extension use * 253 Reserved for sub-table extension use * 254 Reserved for sub-table extension use * 255 Missing value * ###################################################################### GRIB Table 2 - SUB A ID ParamDescription Units === ================================================ ============= 145 dynamic height m*m/s/s 146 temperature error K 162 EOTS sea surface temperature K 178 gradient below sound layer K/m 179 strength of shallow sound channel m/s 209 visual sea height m 210 500MB small scale disturbance gpm 211 500MB residual pattern gpm 212 500MB long wave pattern gpm 213 Magnetic Ditch Heading Degree true 224 surface frontal anal K /m/m ###################################################################### GRIB Table 2 - Sub B Code Figure Field Parameter Unit =========== =============== ==== ###################################################################### GRIB Table 2 - Sub C Code Figure Field Parameter Unit =========== =============== ==== ###################################################################### GRIB Table 2 - Sub D Code Figure Field Parameter Unit =========== =============== ==== ###################################################################### GRIB Table 2 - Sub E Code Figure Field Parameter Unit =========== =============== ==== ###################################################################### GRIB Table 3: Level Definitions Line 1: Level ID | Number of Octets | Meaning Line 2: Contents of octet 11 (optional) Line 3: Contents of octet 12 (optional) 001 0 Ground or water surface 002 0 Cloud base level 003 0 Level of cloud tops 004 0 Level of 0 degree C isotherm 005 0 Level of adiabatic condensation lifted from the surface 006 0 Maximum wind level 007 0 Tropopause 008 0 Nominal top of atmosphere 009 0 Sea bottom 100 2 Isobaric surface Pressure in hPa 101 1 Layer between two isobaric surfaces Pressure of top in kPa Pressure of bottom in kPa 102 0 Mean sea level 103 2 Specified altitude above mean sea level Altitude in meters 104 1 Layer between two specified altitudes above mean sea level Altitude of top in hm Altitude of bottom in hm 105 2 Specified height level above ground Height in meters 106 1 Layer between two specified height levels above ground Height of top in hm Height of bottom in hm 107 2 Sigma level Sigma value in 1/10 000 108 1 Layer between two sigma levels Sigma value of top in 1/100 Sigma value of bottom in 1/100 109 2 Hybrid level Level number 110 1 Layer between two hybrid levels Level number of top Level number of bottom 111 2 Depth below land surface Depth in centimeters 112 1 Layer between two depths below land surface Depth of upper surface (cm) Depth of lower surface (cm) 113 2 Isentropic (theta) level Potential temperature in K (2 octets) 114 1 Layer between two isentropic levels 475 K minus theta of top in K 475 K minus theta of bottom in K 115 2 Sigma-z level Sigma-z value in meters 117 2 Sigma-ocean level Sigma value in 1/10 000 121 1 Layer between two isobaric surfaces (high precision) 1100 hPa minus pressure of top in hPa 1100 hPa minus pressure of bottom in hPa 125 2 Specified height level above ground (high precision) Height in centimeters 128 1 Layer between two sigma levels (high precision) 1.1 minus sigma of top, in 1/1000 of sigma 1.1 minus sigma of bottom, in 1/1000 of sigma 141 1 Layer between two isobaric surfaces (mixed precision) Pressure of top in kPa 1100 hPa minus pressure of bottom in hPa 160 2 Depth below sea level Depth in meters (2 octets) 200 0 Entire atmosphere (considered as a single layer) 201 0 Entire ocean (considered as a single layer) ###################################################################### GRIB Table - Generating Process Definitions (Octet 6 of PDS) Code Figure Model Name =========== ========== 001 NORAPS 002 COAMPS 003 NOGAPS 004 WAM 005 PIPS 006 OTIS 007 GSOWM 008 TOPS 009 GEXM 010 SAR 011 MEDSOWM 012 atms_clmo 013 TESS_NOGAPS 014 ocn_clmo 015 VNMM 016 NORAPS2 ###################################################################### GRIB Table - Pre-defined geometries (Octet 7 of PDS) Code Figure Geometry Name =========== ============= 001 global_nlom_4096x2192 002 global_modas_360x161 003 global_modas_720x321 004 global_modas_1440x641 005 global_modas_2880x1281 006 gom_modas_185x121 007 med_modas_341x129 008 ecs_modas_129x177 009 pwc_modas_161x161 010 abs_modas_361x321 011 gst_modas_481x241 012 ls2000_modas_65x31 013 glb00_modas_321x281 255 generic geometry id