ECMWF Joint OSSE Nature Runs Data Description
-
- updated in January 2012 -
Nature Run is a free forecast run with daily SST and ice. Model used is Version c31r1 (id=128), which is similar model used for interim reanalysis at ECMWF (c31r2). The reason for using a free forecast run is explained at:
http://www.emc.ncep.noaa.gov/research/JointOSSEs/record/OSSE_truth.html
T511NR (13 month long nature run to study data impact on large scale events)
Horizontal resolution: T511
Number of vertical levels: 91
Period covers 20050510-20060531 (3-hour write ups)
Completed: July 17, 2006
T799Oct05 (hurricane period)
Horizontal resolution: T799
Number of vertical levels: 91
Hourly write ups
September 27- November 1st
T799Apr06 (season for mid-latitude severe storms)
Horizontal resolution: T799
Number of vertical levels: 91
Hourly write ups
Initial conditions from the T511NR
Period: April 10-May 15th
[Format]
Grib1
Decoder is available at
http://www.ecmwf.int/products/data/software/download/gribex.html
[Variables, levels and resolution]
Model level data:
Reduced Gaussian grid used for model
N256 for T511NR (1024 grid point around the equator)
N400 for T799NR (1600 grid point around the equator)
91-level data:
Uhbl 131 U velocity [m s**-1]
Vhbl 132 V velocity [m s**-1]
VOhbl 138 Vorticity (relative) [s**-1]
Whbl 135 Vertical velocity [Pa s**-1]
Thbl 130 Temperature [K]
O3hbl 203 Ozone mass mixing ratio [kg kg**-1]
CChbl 248 Cloud cover [(0 - 1)]
CIWChbl 247 Cloud ice water content [kg kg**-1]
CLWChbl 246 Cloud liquid water content [kg kg**-1]
Dhbl 155 Divergence [s**-1]
Qhbl 133 Specific humidity [kg kg**-1]
no100hbl 100 Geopotential height
One level data:
LNSPhlev1 152 hybrid level 1 Logarithm of surface pressure
Zhlev1 129 hybrid level 1 Geopotential [m**2 s**-2]
Surface data:
Reduced Gaussian grid used for model.
N256 for T511NR (1024 grid point around the equator)
N400 for T799NR (1600 grid point around the equator)
no10Usfc 165 10 metre U wind component [m s**-1]
no10Vsfc 166 10 metre V wind component [m s**-1]
no2Dsfc 168 2 metre dewpoint temperature [K]
no2Tsfc 167 2 metre temperature [K]
ASNsfc 32 Snow albedo [(0-1)]
BLDsfc 145 Boundary layer dissipation [W m**-2 s]
BLHsfc 159 Boundary layer height [m]
CAPEsfc 59 Convective available potential energy [J kg**-1]
CHNKsfc 148 Charnock
CIsfc 31 Sea-ice cover [(0-1)]
CPsfc 143 Convective precipitation [m]
Esfc 182 Evaporation [m of water]
ESsfc 44 Snow evaporation [m of water]
EWSSsfc 180 East/West surface stress [N m**-2 s]
FALsfc 243 Forecast albedo [(0 - 1)]
FLSRsfc 245 Forecast log of surface roughness for heat
FSRsfc 244 Forecast surface roughness [m]
GWDsfc 197 Gravity wave dissipation [W m**-2 s]
HCCsfc 188 High cloud cover [(0 - 1)]
LCCsfc 186 Low cloud cover [(0 - 1)]
LGWSsfc 195 Lat. component of gravity wave stress [N m**-2 s]
LSMsfc 172 Land/sea mask [(0, 1)]
LSPsfc 142 Stratiform precipitation [m]
LSPFsfc 50 Large-scale precipitation fraction [s]
MCCsfc 187 Medium cloud cover [(0 - 1)]
MGWSsfc 196 Meridional component of gravity wave stress [N m**-2 s]
MSLsfc 151 Mean sea-level pressure [Pa]
NSSSsfc 181 North/South surface stress [N m**-2 s]
PARsfc 58 Photosynthetically active radiation at the surface [W m**-2]
ROsfc 205 Runoff [m]
RSNsfc 33 Snow density [kg m**-3]
SDsfc 141 Snow depth [m of water equivalent]
SFsfc 144 Snowfall (convective + stratiform) [m of water equivalent]
SKTsfc 235 Skin temperature [K]
SLHFsfc 147 Surface latent heat flux [W m**-2 s]
SMLTsfc 45 Snowmelt [m of water]
SRCsfc 198 Skin reservoir content [m of water]
SSHFsfc 146 Surface sensible heat flux [W m**-2 s]
SSRsfc 176 Surface solar radiation [W m**-2 s]
SSRCsfc 210 Surface net solar radiation, clear sky [W m**-2]
SSRDsfc 169 Surface solar radiation downwards [W m**-2 s]
SSTKsfc 34 Sea surface temperature [K]
STRsfc 177 Surface thermal radiation [W m**-2 s]
STRCsfc 211 Surface net thermal radiation, clear sky [W m**-2]
STRDsfc 175 Surface thermal radiation downwards [W m**-2 s]
SUNDsfc 189 Sunshine duration [s]
TCCsfc 164 Total cloud cover [(0 - 1)]
TCO3sfc 206 Total column ozone [Dobson]
TCWsfc 136 Total column water [kg m**-2]
TCWVsfc 137 Total column water vapour [kg m**-2]
TSNsfc 238 Temperature of snow layer [K]
TSRsfc 178 Top solar radiation [W m**-2 s]
TSRCsfc 208 Top net solar radiation, clear sky [W m**-2]
TTRsfc 179 Top thermal radiation [W m**-2 s]
TTRCsfc 209 Top net thermal radiation, clear sky [W m**-2]
UVBsfc 57 Downward UV radiation at the surface (Ultra-violet band B) [W m**-2]
Zsfc 129 Geopotential [m**2 s**-2]
var78sfc 78 Total column liquid water [kg m**-2]undefined
var79sfc 79 Total column ice water [kg m**-2]undefined
STL10_7cm 139 0-7 cm underground Soil temperature level 1 [K]
STL27_28cm 170 7-28 cm underground Soil temperature level 2 [K]
STL328_100cm 183 28-100 cm underground Soil temperature level 3 [K]
STL4100_255cm 236 100-255 cm underground Soil temperature level 4 [K]
SWVL10_7cm 39 0-7 cm underground Volumetric soil water layer 1 [m**3 m**-3]
SWVL27_28cm 40 7-28 cm underground Volumetric soil water layer 2 [m**3 m**-3]
SWVL328_100cm 41 28-100 cm underground Volumetric soil water layer 3 [m**3 m**-3]
SWVL4100_255cm 42 100-255 cm underground Volumetric soil water layer 4 [m**3 m**-3]
ISTL10_7cm 35 0-7 cm underground Ice surface temperature layer 1 [K]
ISTL27_28cm 36 7-28 cm underground Ice surface temperature layer 2 [K]
ISTL328_100cm 37 28-100 cm underground Ice surface temperature layer 3 [K]
ISTL4100_255cm 38 100-255 cm underground Ice surface temperature layer 4 [K]
Verification data are provided for pressure levels.
Regular lat lon on a 1deg x 1deg for T511 NR
Regular lat lon on a 0.5deg x 0.5deg for T799 NR
31 Pressure levels:
1000 975 950 925 900 850 800 775 750 700 650 600 550 500 450 400 350 300 250 200 150 100 70 50 30 20 10 7 5 3 2 1
Variables
CCprs 248 Cloud cover [(0 - 1)]
CIWCprs 247 Cloud ice water content [kg kg**-1]
CLWCprs 246 Cloud liquid water content [kg kg**-1]
Dprs 155 Divergence [s**-1]
O3prs 203 Ozone mass mixing ratio [kg kg**-1]
Qprs 133 Specific humidity [kg kg**-1]
Rprs 157 Relative humidity [%]
Tprs 130 Temperature [K]
Uprs 131 U velocity [m s**-1]
Vprs 132 V velocity [m s**-1]
VOprs 138 Vorticity (relative) [s**-1]
Wprs 135 Vertical velocity [Pa s**-1]
Zprs 129 Geopotential [m**2 s**-2]
Verification data on isentropic levels.
Regular lat lon on a 1deg x 1deg for T511 NR
Regular lat lon on a 0.5deg x 0.5deg for T799 NR
Five potential temperature levels: 315,330,350,370,530
Variables
Dtht 155 Divergence [s**-1]
MONTtht 53 Montgomery potential [m**2 s**-2]
O3tht 203 Ozone mass mixing ratio [kg kg**-1]
PREStht 54 Pressure [Pa]
PVtht 60 Potential vorticity [K m**2 kg**-1 s**-1]
Qtht 133 Specific humidity [kg kg**-1]
Utht 131 U velocity [m s**-1]
Vtht 132 V velocity [m s**-1]
VOtht 138 Vorticity (relative) [s**-1]
Time series
of Surface data on a 1deg x 1deg for both T799NR and T511NR.
CP(Convective precipitation), LSP(Large Scale Precipitation) HCC,MCC,LCC,
SD SKT, T2m TD2m U10m,V10m, and MSLP
Time series of all surface data on a 0.5 deg x 0.5 deg for T799 NR.
Surface height on a 1deg x 1deg for May 1, 2005 at 12z