ECMWF Parameter Code Table 128 8 SRO Surface runoff m 9 SSRO Sub-surface runoff m 15 ALUVP UV visible albedo for direct radiation 16 ALUVD UV visible albedo for diffuse radiation 17 ALNIP Near IR albedo for direct radiation 18 ALNID Near IR albedo for diffuse radiation 26 CL Lake cover 27 CVL Low vegetation cover 28 CVH High vegetation cover 29 TVL Type of low vegetation 30 TVH Type of high vegetation 31 CI Sea-ice cover 32 ASN Snow albedo 33 RSN Snow density kg m^-3 34 SSTK Sea surface temperature K 35 ISTL1 Ice surface temperature layer 1 K 36 ISTL2 Ice surface temperature layer 2 K 37 ISTL3 Ice surface temperature layer 3 K 38 ISTL4 Ice surface temperature layer 4 K 39 SWVL1 Volumetric soil water layer 1 m^3 m^-3 ECMWF has a description of the soil water units on their web site 40 SWVL2 Volumetric soil water layer 2 m^3 m^-3 ECMWF has a description of the soil water units on their web site 41 SWVL3 Volumetric soil water layer 3 m^3 m^-3 ECMWF has a description of the soil water units on their web site 42 SWVL4 Volumetric soil water layer 4 m^3 m^-3 ECMWF has a description of the soil water units on their web site 43 SLT Soil type 44 ES Snow evaporation m Accumulated field 45 SMLT Snowmelt m Accumulated field 49 10FG Wind gust at 10 metres m s^-1 Maximum since previous post-processing 50 LSPF Large-scale precipitation fraction s Accumulated field 57 UVB Downward uv radiation at the surface W m^-2 59 CAPE Convective available potential energy J kg^-1 60 PV Potential vorticity K m^2 kg^-1 s^-1 66 LAILV Leaf area index, low vegetation m^2 m^-2 67 LAIHV Leaf area index, high vegetation m^2 m^-2 74 SDFOR Standard deviation of filtered subgrid surface geopotential m 75 CRWC Specific rain water content kg kg^-1 76 CSWC Specific snow water content kg kg^-1 78 TCLW Total column liquid water kg m^-2 79 TCIW Total column ice water kg m^-2 129 Z Geopotential m^2 s^-2 Orography if at the surface 130 T Temperature K 131 U U velocity m s^-1 132 V V velocity m s^-1 133 Q Specific humidity kg kg^-1 134 SP Surface pressure Pa 135 W Vertical velocity Pa s^-1 136 TCW Total column water kg m^-2 Liquid + ice + vapour 137 TCWV Total column water vapour kg m^-2 138 VO Vorticity (relative) s^-1 139 STL1 Soil temperature level 1 K Soil temperature (ST) before 1993-08-04 141 SD Snow depth m of water equivalent 142 LSP Stratiform precipitation m Accumulated field 143 CP Convective precipitation m Accumulated field 144 SF Snowfall (convective + stratiform) m of water equivalent Accumulated field 145 BLD Boundary layer dissipation W m^-2 s Accumulated field 146 SSHF Surface sensible heat flux W m^-2 s Accumulated field 147 SLHF Surface latent heat flux W m^-2 s Accumulated field 148 CHNK Charnock Surface stress (SS) before 1998-05-19 151 MSL Mean sea-level pressure Pa 155 D Divergence s^-1 157 R Relative humidity % 159 BLH Boundary layer height m 160 SDOR Standard deviation of orography 161 ISOR Anisotropy of sub-gridscale orography 162 ANOR Angle of sub-gridscale orography rad 163 SLOR Slope of sub-gridscale orography 164 TCC Total cloud cover 165 10U 10 metre U wind component m s^-1 166 10V 10 metre V wind component m s^-1 167 2T 2 metre temperature K 168 2D 2 metre dewpoint temperature K 169 SSRD Surface solar radiation downwards W m^-2 s 170 STL2 Soil temperature level 2 K Deep soil temperature (DST) before 1993-08-04 172 LSM Land/sea mask 175 STRD Surface thermal radiation downwards W m^-2 s Accumulated field 176 SSR Surface solar radiation W m^-2 s Accumulated field 177 STR Surface thermal radiation W m^-2 s Accumulated field 178 TSR Top solar radiation W m^-2 s Accumulated field 179 TTR Top thermal radiation W m^-2 s Accumulated field 180 EWSS East/West surface stress N m^-2 s Accumulated field 181 NSSS North/South surface stress N m^-2 s Accumulated field 182 E Evaporation m of water Accumulated field 183 STL3 Soil temperature level 3 K Climatological deep soil temperature (CDST) before 1993-08-04 186 LCC Low cloud cover 187 MCC Medium cloud cover 188 HCC High cloud cover 195 LGWS Latitudinal component of gravity wave stress N m^-2 s Accumulated field 196 MGWS Meridional component of gravity wave stress N m^-2 s Accumulated field 197 GWD Gravity wave dissipation W m^-2 s Accumulated field 198 SRC Skin reservoir content m of water 201 MX2T Maximum 2 metre temperature since previous post-processing K 202 MN2T Minimum 2 metre temperature since previous post-processing K 203 O3 Ozone mass mixing ratio kg kg^-1 205 RO Runoff m Accumulated field 206 TCO3 Total column ozone kg m^-2 Before 2001-06-12, unit was Dobson. 1 Dobson = 2.1415E-5 kg m^-2 208 TSRC Top net solar radiation, clear sky W m^-2 s Accumulated field 209 TTRC Top net thermal radiation, clear sky W m^-2 s Accumulated field 210 SSRC Surface net solar radiation, clear sky W m^-2 s Accumulated field 211 STRC Surface net thermal radiation, clear sky W m^-2 s Accumulated field 212 SI Solar insolation W m^-2 s 213 VIMD Vertically integrated moisture divergence kg m^-2 228 TP Total precipitation m 229 IEWS Instantaneous X surface stress N m^-2 230 INSS Instantaneous Y surface stress N m^-2 231 ISHF Instantaneous surface heat flux W m^-2 232 IE Instantaneous moisture flux kg m^-2 s Evaporation 235 SKT Skin temperature K 236 STL4 Soil temperature level 4 K 238 TSN Temperature of snow layer K 239 CSF Convective snowfall m of water equivalent Accumulated field 240 LSF Large-scale snowfall m of water equivalent Accumulated field 243 FAL Forecast albedo 244 FSR Forecast surface roughness m 245 FLSR Forecast log of surface roughness for heat 246 CLWC Cloud liquid water content kg kg^-1 247 CIWC Cloud ice water content kg kg^-1 248 CC Cloud cover ECMWF Parameter Code Table 228 1 CIN Convective inhibition J kg^-1 3 ZUST Friction velocity m s^-1 7 DL Lake depth m 8 LMLT Lake mix-layer temperature K 9 LMLD Lake mix-layer depth m 10 LBLT Lake bottom temperature K 11 LTLT Lake total layer temperature K 12 LSHF Lake shape factor 13 LICT Lake ice temperature K 14 LICD Lake ice depth m 15 DNDZN Minimum vertical gradient of refractivity inside trapping layer m^-1 16 DNDZA Mean vertical gradient of refractivity inside trapping layer m^-1 17 DCTB Duct base height m 18 TPLB Trapping layer base height m 19 TPLT Trapping layer top height m 21 FDIR Total sky direct solar radiation at surface J m^-2 22 CDIR Clear-sky direct solar radiation at surface J m^-2 23 CBH Cloud base height m 24 DEG0L Zero degree level m 29 I10FG Instantaneous 10 metre wind gust m s^-1 89 TCRW Total column rain water kg m^-2 90 TCSW Total column snow water kg m^-2 129 SSRDC Surface solar radiation downward clear-sky W m^-2 130 STRDC Surface thermal radiation downward clear-sky W m^-2 131 U10N Neutral wind at 10 m u-component m s^-1 132 V10N Neutral wind at 10 m v-component m s^-1 217 ILSPF Instantaneous large-scale surface precipitaton fraction (0-1) 218 CRR Convective rain rate kg m^-2 s^-1 219 LSRR Large scale rain rate kg m^-2 s^-1 220 CSFR Convective snowfall rate water equivalent kg m^-2 s^-1 221 LSSFR Large scale snowfall rate water equivalent kg m^-2 s^-1 226 MXTPR Maximum total precipitation rate since previous post-processing kg m^-2 s^-1 227 MNTPR Minimum total precipitation rate since previous post-processing kg m^-2 s^-1 246 100U 100 metre U wind component m s^-1 247 100V 100 metre V wind component m s^-1 251 PEV Potential evaporation m ECMWF Parameter Code Table 162 53 VIMA Vertical integral of mass of atmosphere kg m^-2 54 VIT Vertical integral of temperature K kg m^-2 59 VIKE Vertical integral of kinetic energy J m^-2 60 VITHE Vertical integral of thermal energy J m^-2 61 VIPIE Vertical integral of potential+internal energy J m^-2 62 VIPILE Vertical integral of potential+internal+latent energy J m^-2 63 VITOE Vertical integral of total energy J m^-2 64 VIEC Vertical integral of energy conversion W m^-2 65 VIMAE Vertical integral of eastward mass flux kg m^-1 s^-1 66 VIMAN Vertical integral of northward mass flux kg m^-1 s^-1 67 VIKEE Vertical integral of eastward kinetic energy flux W m^-2 68 VIKEN Vertical integral of northward kinetic energy flux W m^-1 69 VITHEE Vertical integral of eastward heat flux W m^-1 70 VITHEN Vertical integral of northward heat flux W m^-1 71 VIWVE Vertical integral of eastward water vapour flux kg m^-1 s^-1 72 VIWVN Vertical integral of northward water vapour flux kg m^-1 s^-1 73 VIGE Vertical integral of eastward geopotential flux W m^-1 74 VIGN Vertical integral of northward geopotential flux W m^-1 75 VITOEE Vertical integral of eastward total energy flux W m^-1 76 VITOEN Vertical integral of northward total energy flux W m^-1 77 VIOZE Vertical integral of eastward ozone flux kg m^-1 s^-1 78 VIOZN Vertical integral of northward ozone flux kg m^-1 s^-1 79 VILWD Vertical integral of divergence of cloud liquid water flux kg m^-2 s^-1 80 VIIWD Vertical integral of divergence of cloud frozen water flux kg m^-2 s^-1 81 VIMAD Vertical integral of divergence of mass flux kg m^-2 s^-1 82 VIKED Vertical integral of divergence of kinetic energy flux W m^-2 83 VITHED Vertical integral of divergence of thermal energy flux W m^-2 84 VIWVD Vertical integral of divergence of moisture flux kg m^-2 s^-1 85 VIGD Vertical integral of divergence of geopotential flux W m^-2 86 VITOED Vertical integral of divergence of total energy flux W m^-2 87 VIOZD Vertical integral of divergence of ozone flux kg m^-2 s^-1 88 VILWE Vertical integral of eastward cloud liquid water flux kg m^-1 s^-1 89 VILWN Vertical integral of northward cloud liquid water flux kg m^-1 s^-1 90 VIIWE Vertical integral of eastward cloud frozen water flux kg m^-1 s^-1 91 VIIWN Vertical integral of northward cloud frozen water flux kg m^-1 s^-1 92 VIMAT Vertical integral of mass tendency kg m^-2 s^-1