Updated March 2006
A few differences between this GRIB parameter table and that for RUC-2: a few new variables, some precision changes, some variable parameter changes.
See following links for
GRIB parameter definitions -
http://www.nco.ncep.noaa.gov/pmb/docs/on388/table2.html
GRIB type and value of level -
http://www.nco.ncep.noaa.gov/pmb/docs/on388/table3.html
General GRIB information - 'ON388' -
http://www.nco.ncep.noaa.gov/pmb/docs/on388/
See
GRIB inventory of all RUC files from NCEP at
http://www.nco.ncep.noaa.gov/pmb/products/ruc2
WARNING: Most (but not all) of these variables are available somewhere, and this file shows the GRIB parameters used if they are written.
RUC Table variable definitions for GRIB
(note: * indicates NCEP needs to permanently assign number)
GRIB GRIB
iparm ztype iz1 iz2 itr iscale ABBREV UNITS
u-component of wind - b 33 109 1 U GRD m/s
v-component of wind - b 34 109 1 V GRD m/s
height - b 7 109 1 HGT gpm
pressure - b 1 109 0 PRES Pa
virtual potential temperature - b 189 109 2 VPTMP K
water vapor mixing ratio - b 53 109 8
vertical velocity - b 39 109 1 V VEL Pa/s
cloud water mixing ratio - b 153 109 6 CLWMR Kg/Kg
rain water mixing ratio - b 170 109 6 Kg/Kg
ice mixing ratio - b 178 109 6 kg/kg
snow mixing ratio - b 171 109 6 kg/kg
graupel mixing ratio - b 179 109 6 kg/kg
number concentration for ice particles - b 198 109 -5 NCIP /m**3
turbulent kinetic energy - b 158 109 1 TKE J/kg
MAPS mean sea level pressure 129 102 0 MSLMA Pa
soil temperature at surface 85 1 2 TSOIL K
sensible heat flux 122 1 1 SHTFL W/m**2
latent heat flux 121 1 1 LHTFL W/m**2
net longwave radiation at surface 112 1 1 NLWRS W/m**2
precipitation rate 59 1 4 PRATE kg/m**2/s
resolvable scale precipitation 62 1 1 NCPCP kg/m**2
sub-grid scale precipitation 63 1 1 ACPCP kg/m**2
precipitable water 54 200 1 PWAT kg/m**2
pressure at tropopause 1 7 -1 PRES
potential temperature at tropopause 13 7 1 POT K
temperature at tropopause 11 7 1 TMP K
u-component of wind at tropopause 33 7 1 U GRD m/s
v-component of wind at tropopause 34 7 1 V GRD m/s
convective available potential energy 157 1 0 CAPE J/kg
convective inhibition 156 1 0 CIN J/Kg
soil temperature at level 1 below surface 85 111 5 2 TSOIL K
soil temperature at level 2 below surface 85 111 20 2 TSOIL K
soil temperature at level 3 below surface 85 111 40 2 TSOIL K
soil temperature at level 4 below surface 85 111 160 2 TSOIL K
soil temperature at the bottom 85 111 300 2 TSOIL K
soil volumetric moisture content at surface 144 1 4 SOILW fraction
soil volumetric moisture content at level 1 144 111 5 4 SOILW fraction
soil volumetric moisture content at level 2 144 111 20 4 SOILW fraction
soil volumetric moisture content at level 3 144 111 40 4 SOILW fraction
soil volumetric moisture content at level 4 144 111 160 4 SOILW fraction
soil volumetric moisture content at the bottom 144 111 300 4 SOILW fraction
soil moisture content at surface 86 1 4 SOIL M kg/m**2
soil moisture content at level 1 86 111 5 4 SOIL M kg/m**2
soil moisture content at level 2 86 111 20 4 SOIL M kg/m**2
soil moisture content at level 3 86 111 40 4 SOIL M kg/m**2
soil moisture content at level 4 86 111 160 4 SOIL M kg/m**2
soil moisture content at the bottom 86 111 300 4 SOIL M kg/m**2
direct evaporation from bare soil 224* 1 1
evaporation of canopy water 225* 1 1
canopy water 223 1 2 C WAT kg/m**2
evapotranspiration flux 186* 1 1
water condensation rate near surface 187* 1 2
rate of water dropping from canopy to ground 188* 1 2
net longwave radiation at surface 112 1 1 NLWRS W/m**2
net shortwave radiation at surface 111 1 1 NSWRS W/m**2
snow accumulation 65 1 4 6 WEASD kg/m**2
snow accumulation - 3h 65 1 4 3 WEASD kg/m**2
snow depth 66 1 4 SNO D m
surface runoff 235 1 2 SSRUN kg/m**2
sub-surface runoff 234* 111 300 2 BGRUN kg/m**2
height - p 7 100 1 HGHT gpm
temperature - p 11 100 1 TMP K
relative humidity - p 52 100 3 * R H
u-component of wind - p 33 100 1 U GRD m/s
v-component of wind - p 34 100 1 V GRD m/s
vertical velocity - p 39 100 2 V VEL Pa/s
cloud water mixing ratio - p 153 100 6 CLWMR Kg/Kg
rain water mixing ratio - p 170 100 6 Kg/Kg
ice mixing ratio - p 178 100 6 kg/kg
snow mixing ratio - p 171 100 6 kg/kg
graupel mixing ratio - p 179 100 6 kg/kg
number concentration for ice particles - p 198 100 -5
turbulent kinetic energy - p 158 100 1 TKE J/kg
temperature - m1 11 116 30 0 1 TMP K
relative humidity - m1 52 116 30 0 2 R H %
u-component of wind - m1 33 116 30 0 1 U GRD m/s
v-component of wind - m1 34 116 30 0 1 V GRD m/s
vertical velocity - m1 39 116 30 0 2 V VEL Pa/s
temperature - m2 11 116 60 30 1 TMP K
relative humidity - m2 52 116 60 30 2 R H %
u-component of wind - m2 33 116 60 30 1 U GRD m/s
v-component of wind - m2 34 116 60 30 1 V GRD m/s
vertical velocity - m2 39 116 60 30 2 V VEL Pa/s
temperature - m3 11 116 90 60 1 TMP K
relative humidity - m3 52 116 90 60 2 R H %
u-component of wind - m3 33 116 90 60 1 U GRD m/s
v-component of wind - m3 34 116 90 60 1 V GRD m/s
vertical velocity - m3 39 116 90 60 2 V VEL Pa/s
temperature - m4 11 116 120 90 1 TMP K
relative humidity - m4 52 116 120 90 2 R H %
u-component of wind - m4 33 116 120 90 1 U GRD m/s
v-component of wind - m4 34 116 120 90 1 V GRD m/s
vertical velocity - m4 39 116 120 90 2 V VEL Pa/s
temperature - m5 11 116 150 120 1 TMP K
relative humidity - m5 52 116 150 120 2 R H %
u-component of wind - m5 33 116 150 120 1 U GRD m/s
v-component of wind - m5 34 116 150 120 1 V GRD m/s
vertical velocity - m5 39 116 150 120 2 V VEL Pa/s
temperature - m6 11 116 180 150 1 TMP K
relative humidity - m6 52 116 180 150 2 R H %
u-component of wind - m6 33 116 180 150 1 U GRD m/s
v-component of wind - m6 34 116 180 150 1 V GRD m/s
vertical velocity - m6 39 116 180 150 2 V VEL Pa/s
u-component of wind - s 33 105 10 1 U GRD m/s
u-component of wind, 10m fixed height 33 105 10 1 U GRD m/s
v-component of wind - s 34 105 10 1 V GRD m/s
v-component of wind, 10m fixed height 34 105 10 1 V GRD m/s
u-component of wind 33 1 1 U GRD m/s
v-component of wind 34 1 1 V GRD m/s
3-hr pressure tendency - s 3 1 3 PTEND Pa/s
3-hr pressure tendency 3 1 3 PTEND Pa/s
potential temperature 13 105 2 1 POT K
potential temperature, 2m fixed height 13 105 2 1 POT K
temperature - s 11 105 2 1 TMP K
temperature, 2m fixed height 11 105 2 1 TMP K
relative humidity - s 52 105 2 2 TMP K
relative humidity, 2m fixed height 52 105 2 2 TMP K
temperature 11 1 1 TMP K
specific humidity 51 105 2 6 SPF H %
specific humidity, 2m fixed height 51 105 2 6 SPF H %
water vapor mixing ratio, 2m fixed height 53 105 2 6
dew point temperature 17 105 2 1 DPT K
dew point temperature, 2m fixed height 17 105 2 1 DPT K
dew point depression 18 105 2 1 DEPR K
dew point depression, 2m fixed height 18 105 2 1 DEPR K
MAPS mean sea level pressure 129 102 -1 MSLMA Pa
altimeter setting 128 1 -1 MSLSA Pa
equivalent potential temperature 14 1 1 EPOT K
lifted index 131 1 1 LFT X K
best lifted index 77 1 1 4LFTX K
resolvable scale precipitation - 1h 62 1 9* 4 1 NCPCP kg/m**2 see writgg on iz1 value
sub-grid scale precipitation - 1h 63 1 9* 4 1 ACPCP kg/m**2
resolvable scale precipitation - 3h 62 1 4 1 NCPCP kg/m**2
sub-grid scale precipitation - 3h 63 1 4 1 ACPCP kg/m**2
resolvable scale precipitation - acc 62 1 4 1 NCPCP kg/m**2
sub-grid scale precipitation - acc 63 1 4 1 ACPCP kg/m**2
categorical rain 140 1 0 CRAIN non-dim
categorical freezing rain 141 1 0 CFRZR non-dim
categorical ice pellets 142 1 0 CICEP non-dim
categorical snow 143 1 0 CSNOW non-dim
helicity 190 1 0 3000 0 HLCY m**2/s**2
storm-relative helicity 190 1 0 3000 0 HLCY m**2/s**2
u-component of storm motion 196 1 1 USTM m/s
v-component of storm motion 197 1 1 VSTM m/s
pressure - frz 1 4 -2 PRES Pa
height - frz 7 4 0 HGT gpm
relative humidity - frz 52 4 2 R H %
pressure at max wind level 1 6 -2 PRES Pa
u-component of wind at max wind level 33 6 1 U GRD m/s
v-component of wind at max wind level 34 6 1 V GRD m/s
soil moisture availability 207 1 2 %
montgomery stream function / gravity 171 109 2
condensation pressure 53 109 -2
earth surface pressure 1 1 1
earth surface height 7 1 0
total soil moisture content 86 112 300 0 1
maximum possible total soil moisture content 86 111 1
water equivalent of snow depth 65 1 5
temperature inside snow or top soil level 239 111 10 2
water vapor mixing ratio at surface 53 1 8
snow density 89 111 5 2
2 meter temperature 11 105 2 1
2 meter specific humidity 51 105 2 4
10 meter component u-wind 33 105 10 1
10 meter component v-wind 34 105 10 1
total precipitation accumulated 61 1 4 2
total convective precipitation accumulated 63 1 4 2
snow melt accumulated 99 1 4 2
surface runoff accumulated 235 1 4 2
time averaged soil heat flux 122 111 3 0
time averaged latent heat flux 121 1 3 0
time averaged sensible heat flux 122 1 3 0
time averaged momentum flux 172 1 3 0
time averaged top-of-atmosphere net longwave rad. flux 114 1 3 0
time averaged top-of-atmosphere net shortwave rad. flux 113 1 3 0
time averaged snow phase change heat flux 229 1 3 0
time averaged downward short wave rad. flux 204 1 3 0
time averaged downward long wave rad. flux 205 1 3 0
time averaged upward short wave rad. flux 211 1 3 0
time averaged upward long wave rad. flux 212 1 3 0
surface drag coefficient 252 1 3
surface albedo 84 1 2
low-level cloud cover percentage 73 0 2
mid-level cloud cover percentage 74 0 2
high-level cloud cover percentage 75 0 2
surface pressure at mini topography 1 1 -1
surface pressure 1 1 -1
700 hPa vertical velocity 39 100 700 5
height 7 100 0
temperature 11 100 1
relative humidity 52 100 2
u-component of wind 33 100 1
v-component of wind 34 100 1
pressure vertical velocity 39 100 2
potential vorticity 149 100 5
mean temperature 11 116 1
mean relative humidity 52 116 2
mean u-component of wind 33 116 1
mean v-component of wind 34 116 1
mean pressure vertical velocity 39 116 2
geopotential height at freezing level 7 4 0
pressure at freezing level 1 4 -2
relative humidity at freezing level 52 4 2
geopotential height at top freezing level 7 204 0
pressure at top freezing level 1 204 -2
relative humidity at top freezing level 52 204 2
pressure at max wind level 1 6 -2
u-component of wind at max wind level 33 6 1
v-component of wind at max wind level 34 6 1
250 hPa height 7 100 250 0
250 hPa u-wind component 33 100 250 1
250 hPa v-wind component 34 100 250 1
500 hPa height 7 100 500 0
500 hPa absolute vorticity 41 100 500 5
850 hPa height 7 100 850 0
850 hPa temperature 11 100 850 1
850 hPa specific humidity 51 100 850 4
850 hPa u-wind component 33 100 850 1
850 hPa v-wind component 34 100 850 1
1000 hPa height 7 100 1000 0
mean temperature in 1st 30hPa layer above ground 11 116 30 0 1
spec hum in 1st 30hPa layer above ground 51 116 30 0 4
u-wind component in 1st 30hPa layer above ground 33 116 30 0 1
v-wind component in 1st 30hPa layer above ground 34 116 30 0 1
snow temperature - snow or top soil level 239 111 5 2
horizontal moisture convergence 135 200 1
PBL height 221 1 0
gust wind speed 180 1 0
cloud base height 8 2 0
cloud top height 8 3 0
visibility 20 1 0
maximum equivalent potential temperature pressure 1 246 2
convective cloud top height 7 243 1
equilibrium level height 7 247 1
convective cloud mass flux 231 1 2