Ensemble of forecasts providing an estimate of the reliability of a single forecast.

The following sub-sets are available from the ENS Model:

III-i: Atmospheric fields

The products consist of 1 control and 50 perturbed forecasts plus the equivalent high-resolution (HRES) products. Customers can choose to receive the equivalent HRES at no extra cost. The high resolution product is suppressed beyond day 10. The fields are provided in GRIB code.

III-ii: Clusters

III-iii: Probabilities

The products provide the probabilities of the occurrence of instantaneous and averaged or accumulated weather events at each grid point. The products are encoded in GRIB form.

III-iv: Time series of weather parameters

The products consist of values of the individual members of the real-time forecast at grid points (single locations). The products are provided in BUFR code.

III-v: Extreme Forecast Index (EFI) and Shift of Tails (SOT) 

The products provide the EFI and SOT of single level parameters calculated over 1, 3, 5 and 10-day ranges at each grid point. The products are encoded in GRIB form

III-vi: Ensemble means

The fields are the means of the ensemble members at each forecast step. The fields are provided in GRIB code.

III-vii: Ensemble standard deviations

The fields are the standard deviations of the ensemble members at each forecast step. The fields are provided in GRIB code.

III-viii: Tropical cyclones tracks

Tropical cyclones tracks products are provided in BUFR code free of information charge.

The tropical cyclone trajectories are computed independently for each ensemble member; a given tropical cyclone may dissipate at different times in different members so the number of members predicting a given tropical cyclone may vary through the forecast.

See Tropical Cyclones for more information.


The purchase of the "Basic Set" +72, +96, +120, +144, +168 hrs is a mandatory prerequisite for the purchase of time steps in the range 12 to 66 hours.

When requested, the invariant parameters will be provided free of information charge once with every forecast dissemination.

Base times for these products: 00 UTC, 12 UTC  unless otherwise specified.

 


Dissemination schedule

Atmospheric fields

(dissemination data stream indicator = E)

12 UTC based Forecast time Time Available 00 UTC based Forecast time Time available
Forecast Day 0 19:00 Forecast Day 0 07:00
Forecast Day 10 19:40 Forecast Day 10 07:40
Forecast Day 15 20:00 Forecast Day 15 08:00
Derived products Step 0 to 240 19:41 Derived products Step 0 to 240 07:41
Derived products Step 246 to 360 20:01 Derived products Step 246 to 360 08:01

 

Parameters

All tables are sortable by column. Use your browser to search for specific parameters.

  Terms conventions
(inv) Invariant field. If requested these parameters can be provided free of charge

III-i:  Atmospheric model

  Product resolution
T+0h to T+360h
  • 0.2° x 0.2° lat/long grid or any multiple thereof (global or sub-area)
  • On model (Octahedral), O640 grid (global or sub-area)
  • Spectral components (TCO639) for upper-air fields (global area only)

III-i-a Atmospheric fields - single level

  Forecast time step
T+0h to T+144h 3-hourly
T+150h to T+360h 6-houlry
Short name Long name Description Unit ID Additional information
10U 10 metre U-velocity - m s-1 165  
10V 10 metre V-velocity - m s-1 166  
10FG3 10 metre wind gust in the last 3 hours - m s-1 228028  
10FG6 10 metre wind gust in the last 6 hours - m s-1 123  
100U 100 metre U-velocity - m s-1 228246  
100V 100 metre V-velocity - m s-1 228247  
2D 2 metre dewpoint temperature - K 168  
2T 2 metre temperature - K 167  
FZRA Accumulated freezing rain Freezing rain precipitation at the surface. Accumulated field m 228216
 
BLD Boundary layer dissipation Conversion of kinetic energy of the mean flow into heat by turbulent diffusion (vertically integrated). Accumulated field. J m**-2 145  
BLH Boundary layer height Boundary layer defined through Troen and Mahrt parcel lifting method m 159  
CEIL Ceiling Cloud-base height relative to the ground (at least 50% cloud in one layer) m 260109

GRIB2

CHNK Charnock Charnock parameter as returned by the wave model. Surface stress (SS) before 19980519. ~ 148  
CDIR Clear-sky direct solar radiation at surface - J m**-2 228022  
CBH Cloud based height Searching from the 2nd lowest model level upwards the height of the level where cloud fraction becomes >1% and condensate content >1.E-6. m 228023  
CAPE Convective available potential energy   J kg-1 59  
CAPES Convective available potential energy shear

CAPE-SHEAR parameter is a product of wind shear and sqrt(CAPE):

CAPE-SHEAR parameter = wind_shear * sqrt(CAPE)

wind_shear denotes bulk shear which is a vector difference of winds at two different heights in the atmosphere and the second term sqrt(CAPE) is proportional to the maximum vertical velocity in convective updraughts.

m2 s-2 228044  
CIN Convective inhibition For computational efficiency CAPE is computed as the vertical integral of excess of equivalent potential temperature of an undilute updraught compared to the saturated equivalent potential temperature of the environment. The results tends to be about 20% higher than the CAPE based on virtual temperature. J kg-1 228001  
CP Convective precipitation Precipitation from updraughts in the convection scheme. Accumulated field. m 143  
CRR Convective rain rate Rate of rainfall from the convective parametrization (instantaneous) kg m**-2 s**-1 228218  
CSFR Convective snowfall rate water equivalent Rate of snowfall from the convective parametrization (instantaneous) kg m**-2 s**-1 228220

 

DSRP Direct solar radiation Incident on a plane perpendicular to the Sun's direction. Accumulated field J m-2 47  
UVB Downward UV radiation at surface Ultra-violet band 0.20-0.44 um. Accumulated field. J m**-2 57  
LGWS Eastward gravity wave surface stress Eastward component of surface stress due to gravity waves and orographic blocking. Accumulated field. N m**-2 s 195  
EWSS Eastward turbulent surface stress Eastward surface stress due to turbulent processes. Accumulated field. Nm**-2 180  
E Evaporation Moisture flux from the surface into the atmosphere. Accumulated field (by model convention downward fluxes are positive). m of water equivalent 182  
FLSR Forecast logarithm of surface roughness for heat - ~ 225  
FSR   Forecast surface roughness Surface aerodynamic roughness as used by the IFS. Over the ocean it depends on ocean wave parameters. Over land it is copied from the climatological field SR before 12/09/2006. After 12/09/2006 the land roughness is derived from the vegetation type through a correspondence table. Snow areas are set to a model defined value. m 244  
GWD Gravity wave dissipation Conversion of kinetic energy of the mean flow into heat due gravity waves and orographic blocking (vertically integrated). Accumulated field. J m**-2 197  
HCC High cloud cover Cloud cover derived from model levels between 0.45 of the surface pressure and the model top using the model's overlap assumption (0 -1) 188  
HCCT Height of convective cloud top   m 228046  
HWBT0 Height of zero-degree wet-bulb temperature This is computed by scanning upwards through model level data, from the lowest model level (10m);
and then saving the height (interpolated) at which wet-bulb temperature (Tw) drops to 0 degree C.
There can in principal be n such levels, where 0 <= n.
m 228047  
HWBT1 Height of one-degree wet-bulb temperature This is computed by scanning upwards through model level data, from the lowest model level (10m);
and then saving the height (interpolated) at which wet-bulb temperature (Tw) drops to 1 degree C.
There can in principal be n such levels, where 0 <= n.
m 228048  
ISTL1 Ice temperature layer 1 Sea ice top layer 0-7 cm K 35  
ISTL2 Ice temperature layer 2 Sea ice layer 2: 7-28 cm K 36  
ISTL3 Ice temperature layer 3 Sea ice layer 3: 28-100 cm K 37  
ISTL4 Ice temperature layer 4 Sea ice layer 4: 100-150 cm K 38  
I10FG Instantaneous 10m wind gust Maximum 3 second wind at 10 m height as defined by WMO including effects of turbulence and convection m s**-1 228029  
ILSPF Instantaneous large-scale surface precipitation fraction Fraction of the grid box that is covered by large-scale precipitation (instantaneous field) (0 - 1) 228217  
KX K index - K 260121 Grib2
LBLT Lake bottom temperature - K 228010  
LICD Lake ice depth - m 228014  
LICT Lake ice temperature - K 228013  
LMLD Lake mix-layer depth - m 228009  
LMLT Lake mix-layer temperature - K 228008  
LSHF Lake shape factor - ~ 228012  
LTLT Lake total layer temperature - K 228011  
LSM Land/sea mask Fractional land cover (model uses 0.5 as threshold for mask) (0 - 1) 172  
LSRR Large scale rain rate Rate of rainfall from the stratiform (large scale) cloud parametrization (instantaneous) kg m**-2 s**-1 228219  
LSSFR Large scale snowfall rate water equivalent Rate of snowfall from the stratiform (large scale) cloud parametrization (instantaneous) kg m**-2 s**-1 228221  
LSP Large-scale precipitation Precipitation from the cloud scheme (which also takes detrained water/ice from the convection scheme as input). Accumulated field. m 142  
LCC Low cloud cover Cloud cover derived from model levels between the surface and 0.8 of the surface pressure using the model's overlap assumption (0 - 1) 186  
MX2T3 Maximum temperature at 2m in the last 3 hours - K 228026 Only available from T+0h to T+144h at 3-hour interval
MX2T6 Maximum temperature at 2m in the last 6 hours - K 121  
MXTPR3 Maximum total precipitation rate in the last 3 hours The total precipitation is calculated from the combined large-scale and convective rainfall and snowfall rates every time step and the maximum is kept since the last 3 hours kg m**-2 s**-1 228222

Only available from T+0h to T+144h at 3-hour interval

MXTPR6 Maximum total precipitation rate in the last 6 hours The total precipitation is calculated from the combined large-scale and convective rainfall and snowfall rates every time step and the maximum is kept since the last 6 hours kg m**-2 s**-1 228224  
MSL Mean sea level PL - Pa 151  
MCC Medium cloud cover Cloud cover derived from model levels between 0.8 and 0.45 of the surface pressure using the model's overlap assumption (0 - 1) 187  
MN2T3 Minimum temperature at 2m in the last 3 hours - K 228027 Only available from T+0h to T+144h at 3-hour interval
MN2T6 Minimum temperature at 2m in the last 6 hours - K 122  
MNTPR3 Minimum total precipitation rate in the last 3 hours The total precipitation is calculated from the combined large-scale and convective rainfall and snowfall rates every time step and the minimum is kept since the last 3 hours kg m**-2 s**-1 228223  
MNTPR6 Minimum total precipitation rate in the last 6 hours The total precipitation is calculated from the combined large-scale and convective rainfall and snowfall rates every time step and the minimum is kept since the last 6 hours kg m**-2 s**-1 228225  
MGWS Northward gravity wave surface stress Northward component of surface stress due to gravity waves and orographic blocking. Accumulated field. N m**-2 s 196  
NSSS Northward turbulent surface stress Northward surface stress due to turbulent processes. Accumulated field. Nm**-2 181  
Z Orography/Geopotential At the surface: orography m2 s-2 129  
PEV Potential evaporation - m 228251  
PTYPE Precipitation type

Describes the type of precipitation at the surface at the validity time. A precipitation type is assigned wherever there is a non-zero value of precipitation in the model output field (however small). The precipitation type should be used together with the precipitation rate to provide for example indication of potential freezing rain events. Precipitation type (0-8) uses WMO Code Table 4.201

Values of ptype defined in the IFS:

  • 0 = No precipitation
  • 1 = Rain
  • 3 = Freezing rain (i.e. supercooled)
  • 5 = Snow
  • 6 = Wet snow (i.e. starting to melt)
  • 7 = Mixture of rain and snow
  • 8 = Ice pellets
(0-8) 260015 Grib2
RO Runoff Amount of water that is lost from the soil through surface runoff and deep soil drainage. Accumulated field. m 205  
SSTK Sea surface temperature Temperature of the sea water (bulk SST) as specified by external analysis (skin temperature is equal to bulk SST before 01/10/2008) K 34  
CI Sea-ice cover Fraction of grid box that is covered with sea ice (kept constant during forecast) (0-1) 31  
SRC Skin reservoir content Amount of water in interception reservoir m of water equiv 198  
SKT Skin temperature Temperature of the surface skin (radiative surface temperature). Before 01/10/2008 the skin temperature was equal to the bulk SST over the ocean. K 235  
ASN Snow albedo Albedo of the snow covered part of the grid box (0-1) 32  
RSN Snow density Snow mass per unit of volume kg m-3 33  
SD Snow depth - m of water equivalent 141  
SF Snow fall (convective + stratiform) Convective + stratiform snowfall. Accumulated field. m 144  
STL1 Soil temperature level 1 Top soil layer: 1-7 cm Soil temperature (ST) before 19930804 K 139  
STL2 Soil temperature level 2 Soil layer 2: 7-28 cm Deep soil temperature (DST) before 19930804 K 170  
STL3 Soil temperature level 3 Soil layer 3: 28-100 cm. Climatological deep soil temperature (CDST) before 19930804. K 183  
STL4 Soil temperature level 4 Layer 100-289 cm K 236  
SLT (inv) Soil type Categorical soil texture representative of the soil column ~ 43  
SSRO Sub-surface runoff Deep soil drainage. Accumulated field. m 9  
SLHF Surface latent heat flux Exchange of latent heat with the surface through turbulent diffusion. Accumulated field. (by model convention downward fluxes are positive) J m**-2 147  
SSR Surface net solar radiation Net solar radiation at the surface. Accumulated field. J m**-2 176  
STR Surface net thermal radiation Net thermal radiation at the surface. Accumulated field (by model convention downward fluxes are positive). J m**-2 177  
SP Surface PL - Pa 134  
SRO Surface runoff Accumulated field m 8  
SSHF Surface sensible heat flux Exchange of heat with the surface through turbulent diffusion. Accumulated field (by model convention downward fluxes are positive). J m**-2 146  
SSRD Surface solar radiation downwards Accumulated field J m-2 169  
STRD Surface thermal radiation downwards Accumulated field W m**-2 s 175  
TSN Temperature of snow layer   K 238  
TSR Top net solar radiation Net solar radiation at the top of the atmosphere. Accumulated field. J m**-2 178  
TTR Top net thermal radiation Net thermal radiation at the top of the atmosphere. Accumulated field (by model convention downward fluxes are positive). J m**-2 179  
TCC Total cloud cover Total cloud cover derived from model levels using the model's overlap assumption (0 -1) 164  
TCIW Total column ice water Vertical integral of cloud ice water content kg m**-2 79  
TCLW Total column liquid water Vertical integral of cloud liquid water content kg m**-2 78  
TCRW Total column rain water Vertically integrated precipitating rain water content kg m**-2 228089  
TCW Total column water Vertically integrated total water (vapour + cloud water + cloud ice kg m**-2 136  
TCSW Total column snow water Vertically integrated precipitating snow water content kg m**-2 228090  
TCWV Total column water vapour Vertically integrated water vapour kg m**-2 137  
TP Total precipitation Convective precipitation + stratiform precipitation (CP +LSP). Accumulated field. m 228  
FDIR Total sky direct solar radiation at surface - J m**-2 228021  
TOTALX Total totals index - K 260123 Grib2
VIS Visibility - m 003020  
SWVL1 Volumetric soil water layer 1 Top soil layer: 0-7 cm m**3 m**-3 39  
SWVL2 Volumetric soil water layer 2 Soil layer 2: 7-28 cm m**3 m**-3 40  
SWVL3 Volumetric soil water layer 3 Soil layer 3: 28-100 cm m**3 m**-3 41  
SWVL4 Volumetric soil water layer 4 Soil layer 4: 100-289 cm m**3 m**-3 42  
DEG0 Zero degree level Height of level (counted from 'surface' - 2nd lowest model level) where the temperature passes from positive to negative values corresponding to the top level of a warm inversion layer. If a second warm inversion layer is encountered then the zero degree level correspond to the top of the 2nd inversion layer. m 228024  

III-i-b Atmospheric fields - Pressure Levels

All parameters are provided at 1000, 925, 850, 700, 500, 400, 300, 200, 100, 50, 10 hPa unless otherwise specified

  Forecast time step 
T+0h to T+144h 3-hourly
T+150h to T+360h 6-houlry
Short name Long name Description Unit ID Additional information
D Divergence Relative divergence s-1 155  
GH Geopotential height Geopotential divided by a constant value of g = 9.80665 m 156  
O3 Ozone mass mixing ratio - kg kg**-2 203  
R Relative humidity "Relative humidity is defined with respect to saturation of the mixed phase i.e. with respect to saturation over ice below -23C and with respect to saturation over water above 0C. In the regime in between a quadratic interpolation is applied." - 157  
Q Specific humidity Grid box mean (mass of water vapour / mass of moist air) Q 133  
STRF Stream function - m2 s-1 1

Temporarily suspended

T Temperature - K 130  
U U-velocity - m s**-1 131  
VP Velocity potential - m**2 s**-1 2

Temporarily suspended

W Vertical velocity Pressure vertical velocity dp/dt. In the model equations it is usually denoted by the Greek letter omega. Pa s**-1 135  
VO Vorticity - s**-1 138  
V V-velocity - m s**-1 132  

III-i-c Atmospheric fields - Model Levels

Model level parameters are available from T+0h to T+168 Except for Geopotential which is available at T+0 only. Please note that the perturbed forecasts fields are only archived at T+240 ant T+360.

  Forecast time step
T+0h to T+144h 3-hourly
T+150h to T+168h 6-houlry
T+168h to T+360h not available
Short name Long name Description Unit ID Additional information
CC Cloud Cover Horizontal fraction of the grid box covered by cloud 0-1 248  
CIWC Specific cloud ice water content Grid-box mean specific cloud ice water content (mass of condensate / mass of moist air) kg kg-1 247  
CLWC Specific cloud liquid water content Grid-box mean specific cloud liquid water content (mass of condensate / mass of moist air) kg kg-1 246  
CRWC Specific rain water content   kg kg-1 75  
CSWC Specific snow water content Grid-box mean specific precipitating rain water content from stratiform cloud (mass of condensate / mass of moist air). kg kg-1 76  
D Divergence Relative divergence s-1 155  
LNSP Logarithm of surface Pressure - ~ 152  
Z (inv) Orography - m2 s-2 129 When requested this parameter will be provided free of charge once with every forecast dissemination.
Q Specific humidity Grid box mean (mass of water vapour / mass of moist air) kg kg-1 133  
T Temperature - K 130  
U U-velocity - m s**-1 131  
V V-velocity - m s**-1 132  
W Vertical velocity Pressure vertical velocity dp/dt. In the model equations it is usually denoted by the Greek letter omega. Pa s**-1 135  
VO Vorticity - s**-1 138  

 III-ii Clusters

This product is coded using local definition 32,

Product resolution

  • 1.5° x 1.5° lat/long grid or any multiple thereof (global or sub-area)
Forecast time step Forecast ranges
T+72 to T+360 12-hourly
Short name Long name Description Unit ID Additional information
GH (1) Geopotential height   m 156 H: European Area (70° N, 20° W, 30° N, 40° E)

III-iii Probabilities

Instantaneous weather events

Product resolution
  • 0.2° x 0.2° lat/long grid or any multiple thereof (global or sub-area)
  • On model (Octahedral) O640 grid (global or sub-area)
  • Spectral components (TCO639) for upper-air fields (global area only)

 III-iii-a Probabilities -Instantaneous weather events - Single level

 

Forecast steps Forecasts ranges
T+24h to T+360h

24-hourly

 

Short name Long name Description Unit ID Additional information
10SPG10 10 metre Wind speed of at least 10m/s Probability % 131068  
10SPG15 10 metre Wind speed of at least 15m/s Probability % 131069  

 III-iii-c Probabilities -Instantaneous weather events - Pressure levels

Short name Long name Description Unit ID Additional information
TAG4 Temperature anomaly greater than +4K Probability % 131024  
TAG8 Temperature anomaly greater than +8K Probability % 131025  
TALM4 Temperature anomaly less than -4K Probability % 131023  
TALM8 Temperature anomaly less than -8K Probability % 131022  

Averaged weather events

  Forecasts step & ranges
2-day period T+120-168
3-day period T+168-240
5-day period T+120-240 T+240-360

III-iii-b: Probabilities - Averaged weather events - Single level

Short name Long name Description Unit ID Additional information
TPRL1 Total precipitation rate less than 1mm/day Probability % 131065  
TPRG3 Total precipitation rate of at least 3mm/day Probability % 131066  
TPL01 Total precipitation less than 0.1 mm Probability % 131064  
TPRG5 Total precipitation rate of at least 5mm/day Probability % 131067  

III-iii-d: Probabilities - Averaged weather events - Pressure levels

Short name Long name Description Unit ID Additional information
TALM2 Temperature anomaly less than -2K Probability % 131020  
TAG2 Temperature anomaly of at least +2K Probability % 131021

 

III-iii-e: Probabilities - Daily weather events - Single level

Forecast steps &ranges
T+0-24 T+12-36  T+24-48 T+36-60 T+48-72
T+60-84 T+72-96 T+84-108 T+96-120 T+108-132
T+120-144 T+132-156 T+144-168 T+156-180 T+168-192
T+180-204 T+192-216 T+204-228 T+216-240 T+228-252
T+240-264 T+252-276 T+264-288 T+276-300 T+288-312
T+300-324 T+312-336 T+324-348 T+336-360  
Short name Long name Description Unit ID Additional information
10FGG15 10 meter wind gust greater than 15m/s Probability % 131070  
10FGG20 10 meter wind gust greater than 20m/s Probability % 131071  
10FGG25 10 meter wind gust greater than 25m/s Probability % 131072  
TPG1 Total precipitation of at least 1 mm Probability % 131064  
TPG10 Total precipitation of at least 10mm Probability % 131062  
TPG20 Total precipitation of at least 20mm Probability % 131063  
TPG5 Total precipitation of at least 5mm Probability % 131061  

III-iii-f: Probabilities - Tropical cyclone probabilities

Forecast steps &ranges
T+24-72 T+46-96  T+72-120 T+96-144 T+120-168
T+144-192 T+168-216 T+192-240 T+216-264 T+240-288
T+216-264 T+240-288      
Short name Long name Description Unit ID Additional information
PH Probability of a hurricane - % 131090

 

PTD Probability of a tropical depression - % 131091

 

PTS Probability of a tropical storm - % 131089

 

III-iv Time series of weather parameters

The products consist of values of the individual members of the real-time forecast at grid points (single locations). The products are provided in BUFR code.

Forecast steps Product resolution

T+0h to T+360h at 6-hour intervals

  • 0.2° x 0.2° lat/long grid or any multiple thereof (global or sub-area)
  • On model (Octahedral) O640 grid (global or sub-area)
Short name Long name Description Unit ID Additional information
10U 10 metre U-velocity - m s-1 165  
10V 10 metre V-velocity - m s-1 166  
10FG6 10 metre wind gust in the last 6 hours 10 metre wind gust in the last 6 hours m s-1 123  
2D 2 metre dewpoint temperature - K 168  
2T 2 metre temperature - K 167  
LSM Land/sea mask Fractional land cover (model uses 0.5 as threshold for mask) (0 - 1) 172    
MX2T6 Maximum temperature at 2m in the last 6hours   K 51  
MSL Mean sea level pressure   Pa 151  
MN2T6 Minimum temperature at 2m in the last 6hours   K 122  
SF Snow fall (convective + stratiform)   m of equivalent water 144  
TCC Total cloud cover   (0 - 1) 164  
TP Total precipitation   m of equivalent water 228  

III-v  Extreme Forecast Index (EFI) and Shift of Tails (SOT)

The products provide the EFI and SOT of single level parameters calculated over 1, 3, 5 and 10-day ranges at each grid point. The products are encoded in GRIB form..

Product resolution: 0.2° x 0.2° lat/long grid or any multiple thereof (global or sub-area)

 

00z

12z

1-day ranges 00Z: 00-24, 24-48, 48-72, 72-96, 96-120, 120-144, 144-168

12Z: 12-36, 36-60, 60-84, 84-108, 108-132, 132-156, 156-180

3-day ranges 00Z: 00-72, 24-96, 48-120, 72-144, 96-168, 120-192, 144-216

12Z: 12-84, 36-108, 60-132, 84-156, 108-180, 132-204, 156-228

5-day ranges 00Z: 00-120, 24-144, 48-168, 72-192, 96-216

12Z: 12-132, 36-156, 60-180, 84-204, 108-228

10-day ranges 00Z: 00-240

12Z: 00-240

Short name Long name Description Unit PARAMETER ID Day range PERCENTILE (SOT ONLY) Additional information
10FGI 10 metre wind gust index - (-1 to 1) 132049 1 90th  
10WSI 10 metre wind speed index - (-1 to 1) 132165 1/3/5/10 90th  
2TI 2 metre temperature index - (-1 to 1) 132167 1/3/5/10 10th/90th  
CAPEI Convective available potential energy index - (-1 to 1) 132059 1 90th

 

               
CAPESI Convective available potential energy shear index - (-1 to 1) 132044 1 90th

 

MN2TI Minimum temperature at 2 metres index - (-1 to 1) 132202 1 10th/90th  
MX2TI Maximum temperature at 2 metres index - (-1 to 1) 132201 1 10th/90th  
SFI Snowfall index (SFI) - accumulation - (-1 to 1) 132144 1 90th  
TPI Total precipitation index (TPI) - accumulation - (-1 to 1) 132228 1/3/5/10 90th  

III-vi  Ensemble means

Product resolution

Forecast time-steps

  • 0.2° x 0.2° lat/long grid or any multiple thereof (global or sub-area)
  • On model (Octahedral) O640 grid (global or sub-area)
  • Spectral components (TCO639) for upper-air fields (global area only)

T+3h to T+144 at 3-hour interval

T+150 toT+360h at 6-hour intervals

III-vi-a Ensemble means - Single level

Short name Long name Description Unit ID Additional information
10SI 10 metre wind speed  

m s-1

207  
100SI 100 meter wind speed   m s-1

228249

 
2T 2 metre temperature   K 167  
MN2T3 Minimum temperature at 2m in the last 3 hours   K 228026  
MN2T6 Minimum temperature at 2m since last 6 hours   K 122  
MX2T3 Maximum temperature at 2m in the last 3 hours   K 228027  
MX2T6 Maximum temperature at 2m since last 6 hours   K 121  
MSL Mean sea level pressure Pa Pa 128151  

III-vi-b Ensemble means -Pressure levels

Short name Long name Description Unit ID Pressure level Additional information
GH Geopotential height m Geopotential divided by a constant value of g = 9.80665 128156 1000/500/300  
T Temperature K - 128130 850/500  
WS Wind Speed m s-1 - 128010 850  

III-vii Ensemble standard deviations

Product resolution

Forecast time-steps

  • 0.2° x 0.2° lat/long grid or any multiple thereof (global or sub-area)
  • On model (Octahedral) O640 grid (global or sub-area)
  • Spectral components (TCO639) for upper-air fields (global area only)
T+6h to T+360h at 6-hour intervals

III-vii-a Ensemble standard deviations -Single level

 

Short name Long name Description Unit ID Additional information
10SI 10 metre wind speed  

m s-1

207  
100SI 100 meter wind speed   m s-1

228249

 
2T 2 metre temperature   K 167  
MN2T3 Minimum temperature at 2m in the last 3 hours   K 228026  
MN2T6 Minimum temperature at 2m since last 6 hours   K 122  
MX2T3 Maximum temperature at 2m in the last 3 hours   K 228027  
MX2T6 Maximum temperature at 2m since last 6 hours   K 121  
MSL Mean sea level pressure Pa Pa 128151  

 

III-vii-b Ensemble standard deviations -Pressure levels

Short name Long name Description Unit ID Pressure level Additional information
GH Geopotential height m Geopotential divided by a constant value of g = 9.80665 128156 1000/500  
T Temperature K - 128130 850/500  
WS Wind Speed m s-1 - 128010 850  

III-viii Tropical cyclones tracks

Tropical cyclones tracks are provided in BUFR code, free of information charge. They are composed of 52 trajectories corresponding to:

  • the 50 perturbed forecasts from ENS (Ensemble Member numbers 1 to 50 in BUFR)
  • the control forecast from ENS (Ensemble Member number 51 in BUFR)
  • the HRES forecast (Ensemble Member number 52 in BUFR)

The tropical cyclone trajectories are computed independently for each ensemble member; a given tropical cyclone may dissipate at different times in different members so the number of members predicting a given tropical cyclone may vary through the forecast.

Observed (existing cyclones) and genesis (created by the forecast).

Short name Long name Description Unit Additional information
TC Tropical Cyclone     BUFR

Last updated July 2017