Introduction
IntroductionThe tables on this web page display all the parameters that are available for each grid type and resolution. The tables also include the time period and the type and number of levels for which each parameter is available.
The following data types are consistent with the ECMWF ERA-15 Re-analysis data held at the BADC. The data spans March 1994 to the present day:
The following gridded data type has been extracted since October 1998 due to its popularity with users:
The following data types are consistent with the ECMWF ERA-40 Re-analysis data held at the BADC. The data spans from September 2002 to the present day:
Details of the available parameters are also listed for the ERA-40 dataset on a separate page.
An explanation of the forecast files for these datasets is also provided.
/badc/ecmwf-op/data/gridded/ or /badc/ecmwf-op/data/gridded_2.5/
They can also be accessed via the webserver (by registered BADC users) at:
http://badc.nerc.ac.uk/cgi-bin/data_browser/data_browser/badc/ecmwf-op/data/gridded/ or
http://badc.nerc.ac.uk/cgi-bin/data_browser/data_browser/badc/ecmwf-op/data/gridded_2.5/
Surface/single level analysis fields (lisfYYMMDDHH)
The regular 2.5° x 2.5° gridded surface/single level fields are stored following the file-naming convention:
lisfYYMMDDHH
Where li means lat/long regular grid (the "i" is historical, meaning initialised - this is
not relevant to the Operational data sets),
sf means surface or single levels (i.e. only one atmospheric level),
and YYMMDDHH stand for the Year, Month, Day (of the month), and Hour (either 00, 06, 12 or
18).
The format of the files is GRIB.
The complete file and directory structure of the regular 2.5° x 2.5° gridded surface/single level fields takes the form of:
/badc/ecmwf-op/data/gridded/YYYY/lisfYYMM/lisfYYMMDDHH
Table 1. Parameters, dates and levels available for the ECMWF Operational
regular 2.5° x 2.5° gridded surface/single level fields.
| Dates | Parameters | Levels | |||||
| Start | End | Parameters (Name) | ECMWF code (numeric) | ECMWF code | Units | Levels | Total Levels |
| 01/03/1994 | 26/06/2000 | Soil temperature level 1 | 139 | STL1 | K | Surface/single | 1 |
| " | " | Soil wetness level 1 | 140 | SWL1 | m (of water) | " | " |
| " | " | Snow depth | 141 | SD | m (of water equivalent) | " | " |
| " | " | Mean sea level pressure | 151 | MSL | Pa | " | " |
| " | " | 10 metre u wind component | 165 | 10U | m s-1 | " | " |
| " | " | 10 metre v wind component | 166 | 10V | m s-1 | " | " |
| " | " | 2 metre temperature | 167 | 2T | K | " | " |
| " | " | 2 metre dewpoint temperature | 168 | 2D | K | " | " |
| " | " | Soil temperature level 2 | 170 | STL2 | K | " | " |
| " | " | Soil wetness level 2 | 171 | SWL2 | m (of water) | " | " |
| " | " | Surface roughness | 173 | SR | m | " | " |
| " | " | Albedo | 174 | AL | - | " | " |
| " | " | Soil temperature level 3 | 183 | STL3 | K | " | " |
| " | " | Soil wetness level 3 | 184 | SWL3 | m (of water) | " | " |
| " | " | Skin reservoir content | 198 | SRC | m (of water) | " | " |
| " | " | Percentage of vegetation | 199 | VEG | % | " | " |
| " | " | Apparent surface humidity | 233 | ASQ | kg/kg | " | " |
| " | " | Log of surface roughness length for heat | 234 | LSRH | - | " | " |
| " | " | Skin temperature | 235 | SKT | K | " | " |
| " | " | Soil temperature level 4 | 236 | STL4 | K | " | " |
| " | " | Soil wetness level 4 | 237 | SWL4 | m (of water) | " | " |
| 27/06/2000* | Now | Soil temperature level 1 | 139 | STL1 | K | Surface/single | 1 |
| " | " | Snow depth | 141 | SD | m (of water equivalent) | " | " |
| " | " | Mean sea level pressure | 151 | MSL | Pa | " | " |
| " | " | 10 metre u wind component | 165 | 10U | m s-1 | " | " |
| " | " | 10 metre v wind component | 166 | 10V | m s-1 | " | " |
| " | " | 2 metre temperature | 167 | 2T | K | " | " |
| " | " | 2 metre dewpoint temperature | 168 | 2D | K | " | " |
| " | " | Soil temperature level 2 | 170 | STL2 | K | " | " |
| " | " | Surface roughness | 173 | SR | m | " | " |
| " | " | Albedo | 174 | AL | - | " | " |
| " | " | Soil temperature level 3 | 183 | STL3 | K | " | " |
| " | " | Skin reservoir content | 198 | SRC | m (of water) | " | " |
| " | " | Log of surface roughness length for heat | 234 | LSRH | - | " | " |
| " | " | Skin temperature | 235 | SKT | K | " | " |
| " | " | Soil temperature level 4 | 236 | STL4 | K | " | " |
Surface/single level monthly means (lisfYYYYMMmmHH.PPP)
Monthly means are archived for the regular 2.5° x 2.5° gridded surface/single level data. The ECMWF calculates monthly means from its 6-hourly operational data. Four separate monthly mean files are available for each parameter in each month, for times 00hr, 06hr, 12hr and 18hr. The monthly means follow the file-naming convention:
lisfYYYYMMmmHH.PPP
Where li means lat/long regular grid (the "i" is historical, meaning
initialised - this is not relevant to the Operational data sets),
sf means surface or single levels (i.e. only one atmospheric level),
YYYYMMmmHH stands for the Year (4 digits), Month, "mm" is Monthly Mean (instead of the Day),
and Hour (either 00, 06, 12 or 18).
PPP is the ECMWF code for each parameter. Note that the monthly mean for
each parameter is stored in an individual file.
The format of the files is GRIB.
The complete file and directory structure of the regular 2.5° x 2.5° gridded surface/single level monthly means takes the form of:
/badc/ecmwf-op/data/gridded/monthly_means/by_date/YYYY/lisfYYYYMMmmHH.PPP
The monthly means can also be browsed by parameter under the directory:
/badc/ecmwf-op/data/gridded/monthly_means/by_param/PPP/lisfYYYYMMmmHH.PPP
The monthly mean regular 2.5° x 2.5° gridded surface/single level data is available for the same parameters as given above in Table 1.
Monthly means of soil water parameters
The Soil Wetness Levels (1-4) were produced until mid-June 2000 so the monthly means
are only archived up to May 2000.
From June 2000 onwards, the monthly means for Volumetric Soil Water Layers (1-4)
are also archived. The corresponding ECMWF codes (numeric) are swvl1 (39), swvl2 (40),
swvl3 (41) and swvl4 (42). The units for the volumetric soil water layers are
m3/m3 and the conversion from Soil Wetness Levels is
explained at the ECMWF webpages.
Upper air analysis fields on pressure levels (liprYYMMDDHH)
The regular 2.5° x 2.5° gridded pressure level fields are stored following the file-naming convention:
liprYYMMDDHH
Where li means lat/long regular grid (the "i" is historical, meaning initialised - this is
not relevant to the Operational data sets),
pr means the data is stored on pressure levels,
and YYMMDDHH stand for the Year, Month, Day (of the month), and Hour (either 00, 06, 12 or
18).
The format of the files is GRIB.
The complete file and directory structure of the regular 2.5° x 2.5° gridded pressure level fields takes the form of:
/badc/ecmwf-op/data/gridded/YYYY/liprYYMM/liprYYMMDDHH
Table 2. Parameters, dates and levels available for the ECMWF Operational
regular 2.5° x 2.5° gridded upper air fields on pressure levels.
| Dates | Parameters | Levels | |||||
| Start | End | Parameters (Name) | ECMWF code (numeric) | ECMWF code | Units | Levels | Total Levels |
| 01/03/1994 | 08/03/1999 | Geopotential (at the surface = orography) | 129 | Z | m2 s-2 | 10, 30, 50, 70, 100, 150, 200, 250, 300, 400, 500, 700, 850, 925, 1000 hPa | 15 |
| " | " | Temperature | 130 | T | K | " | " |
| " | " | U-velocity | 131 | U | m s-1 | " | " |
| " | " | V-velocity | 132 | V | m s-1 | " | " |
| " | " | Vertical velocity | 135 | W | Pa s-1 | " | " |
| " | " | Relative humidity | 157 | R | % | " | " |
| 09/03/1999* | Now | Geopotential (at the surface = orography) | 129 | Z | m2 s-2 | 1, 2, 3, 5, 7, 10, 20, 30, 50, 70, 100, 150, 200, 250, 300, 400, 500, 700, 850, 925, 1000 hPa | 21 |
| " | " | Temperature | 130 | T | K | " | " |
| " | " | U-velocity | 131 | U | m s-1 | " | " |
| " | " | V-velocity | 132 | V | m s-1 | " | " |
| " | " | Vertical velocity | 135 | W | Pa s-1 | " | " |
| " | " | Relative humidity | 157 | R | % | " | " |
Upper air analysis monthly means (liprYYYYMMmmHH.PPP)
Monthly means are archived for the regular 2.5° x 2.5° gridded pressure level data. The ECMWF calculates monthly means from its 6-hourly operational data. Four separate monthly mean files are available for each parameter in each month, for times 00hr, 06hr, 12hr and 18hr. The monthly means follow the file-naming convention:
liprYYYYMMmmHH.PPP
Where li means lat/long regular grid (the "i" is historical, meaning
initialised - this is not relevant to the Operational data sets),
pr means the data is stored on pressure levels,
YYYYMMmmHH stands for the Year (4 digits), Month, "mm" is Monthly Mean (instead of the Day),
and Hour (either 00, 06, 12 or 18).
PPP is the ECMWF code for each parameter. Note that the monthly mean for
each parameter is stored in an individual file.
The format of the files is GRIB.
The complete file and directory structure of the regular 2.5° x 2.5° gridded pressure level monthly means takes the form of:
/badc/ecmwf-op/data/gridded/monthly_means/by_date/YYYY/liprYYYYMMmmHH.PPP
The monthly means can also be browsed by parameter under the directory:
/badc/ecmwf-op/data/gridded/monthly_means/by_param/PPP/liprYYYYMMmmHH.PPP
The monthly mean regular 2.5° x 2.5° gridded pressure level data is available for the same parameters as given above in Table 2.
/badc/ecmwf-op/data/N80/ or /badc/ecmwf-op/data/gaussian/
They can also be accessed via the webserver (by registered BADC users) at:
http://badc.nerc.ac.uk/cgi-bin/data_browser/data_browser/badc/ecmwf-op/data/N80/ or
http://badc.nerc.ac.uk/cgi-bin/data_browser/data_browser/badc/ecmwf-op/data/gaussian/
Surface/single level analysis fields (gisfYYMMDDHH)
The N80 Full Gaussian gridded surface/single level analysis fields are stored following the file-naming convention:
gisfYYMMDDHH
Where gi means a Gaussian grid (the "i" is historical, meaning initialised - this is not
relevant to the Operational data sets),
sf means surface or single levels (i.e. only one atmospheric level),
and YYMMDDHH stand for the Year, Month, Day (of the month), and Hour (either 00, 06, 12 or
18).
The format of the files is GRIB.
The complete file and directory structure of the N80 Full Gaussian gridded surface/single level analysis fields takes the form of:
/badc/ecmwf-op/data/gaussian/YYYY/gisfYYMM/gisfYYMMDDHH
Table 4. Parameters, dates and levels available for the ECMWF Operational
N80 Full Gaussian gridded surface/single level fields.
| Dates | Parameters | Levels | |||||
| Start | End | Parameters (Name) | ECMWF code (numeric) | ECMWF code | Units | Levels | Total Levels |
| 01/03/1994 | 26/06/2000 | Soil temperature level 1 | 139 | STL1 | K | Surface/single | 1 |
| " | " | Soil wetness level 1 | 140 | SWL1 | m (of water) | " | " |
| " | " | Snow depth | 141 | SD | m (of water equivalent) | " | " |
| " | " | Mean sea level pressure | 151 | MSL | Pa | " | " |
| " | " | 10 metre u wind component | 165 | 10U | m s-1 | " | " |
| " | " | 10 metre v wind component | 166 | 10V | m s-1 | " | " |
| " | " | 2 metre temperature | 167 | 2T | K | " | " |
| " | " | 2 metre dewpoint temperature | 168 | 2D | K | " | " |
| " | " | Soil temperature level 2 | 170 | STL2 | K | " | " |
| " | " | Soil wetness level 2 | 171 | SWL2 | m (of water) | " | " |
| " | " | Surface roughness | 173 | SR | m | " | " |
| " | " | Albedo | 174 | AL | - | " | " |
| " | " | Soil temperature level 3 | 183 | STL3 | K | " | " |
| " | " | Soil wetness level 3 | 184 | SWL3 | m (of water) | " | " |
| " | " | Skin reservoir content | 198 | SRC | m (of water) | " | " |
| " | " | Percentage of vegetation | 199 | VEG | % | " | " |
| " | " | Apparent surface humidity | 233 | ASQ | kg/kg | " | " |
| " | " | Log of surface roughness length for heat | 234 | LSRH | - | " | " |
| " | " | Skin temperature | 235 | SKT | K | " | " |
| " | " | Soil temperature level 4 | 236 | STL4 | K | " | " |
| " | " | Soil wetness level 4 | 237 | SWL4 | m (of water) | " | " |
| 27/06/2000* | Now | Soil temperature level 1 | 139 | STL1 | K | Surface/single | 1 |
| " | " | Snow depth | 141 | SD | m (of water equivalent) | " | " |
| " | " | Mean sea level pressure | 151 | MSL | Pa | " | " |
| " | " | 10 metre u wind component | 165 | 10U | m s-1 | " | " |
| " | " | 10 metre v wind component | 166 | 10V | m s-1 | " | " |
| " | " | 2 metre temperature | 167 | 2T | K | " | " |
| " | " | 2 metre dewpoint temperature | 168 | 2D | K | " | " |
| " | " | Soil temperature level 2 | 170 | STL2 | K | " | " |
| " | " | Surface roughness | 173 | SR | m | " | " |
| " | " | Albedo | 174 | AL | - | " | " |
| " | " | Soil temperature level 3 | 183 | STL3 | K | " | " |
| " | " | Skin reservoir content | 198 | SRC | m (of water) | " | " |
| " | " | Log of surface roughness length for heat | 234 | LSRH | - | " | " |
| " | " | Skin temperature | 235 | SKT | K | " | " |
| " | " | Soil temperature level 4 | 236 | STL4 | K | " | " |
Surface/single level forecast fields (gpsfoYYMMDDHH)
The N80 Full Gaussian gridded surface/single level forecast fields are stored following the file-naming convention:
gpsfoYYMMDDHH[HH]
Where gp stands for N80 Gaussian grid ("grid-point"),
sfo means surface or single level forecast,
YYMMDD stand for the Year, Month and Day (of the month).
HH[HH] stands for the hour of the forecast. The forecast parameters are recorded as
accumulations over a given period. The forecast data archived at the BADC is the 24-hour accumulation
from midday (1200) on the day the forecast begins to midday the next day. Up until the end of 1998 the
file-naming convention for describing this was to use 4 numerical characters 1224 to indicate the start
time (12) and the length of the accumulation period (24). However, from 1999 onwards the file-naming
convention changed and only the start time is used (12 - i.e. only two characters). Please note that the
contents of the file and the forecast times were not altered, only the naming system was changed.
The format of the files is GRIB.
The complete file and directory structure of the N80 Full Gaussian gridded surface/single level forecast fields takes the form of:
/badc/ecmwf-op/data/gaussian/YYYY/gpsfoYYMM/gpsfoYYMMDDHHHH
before March 1999,
and
/badc/ecmwf-op/data/gaussian/YYYY/gpsfofYYMM/gpsfoYYMMDDHH
March 1999 onwards.
Table 5. Parameters, dates and levels available for the ECMWF Operational
N80 Full Gaussian gridded surface/single level forecast fields.
| Dates | Parameters | Levels | |||||
| Start | End | Parameters (Name) | ECMWF code (numeric) | ECMWF code | Units | Levels | Total Levels |
| 01/03/1994 | Now | Large scale precipitation | 142 | LSP | m | Surface/single | 1 |
| " | " | Convective precipitation | 143 | CP | m | " | " |
| " | " | Surface sensible heat flux | 146 | SSHF | Wm-2s | " | " |
| " | " | Surface latent heat flux | 147 | SLHF | Wm-2s | " | " |
| " | " | Total cloud cover | 164 | TCC | (0-1) | " | " |
| " | " | Surface solar radiation | 176 | SSR | Wm-2s | " | " |
| " | " | Surface thermal radiation | 177 | STR | Wm-2s | " | " |
| " | " | Top solar radiation | 178 | TSR | Wm-2s | " | " |
| " | " | Top thermal radiation | 179 | TTR | Wm-2s | " | " |
| " | " | East/West surface stress | 180 | EWSS | Nm-2s | " | " |
| " | " | North/South surface stress | 181 | NSSS | Nm-2s | " | " |
| " | " | Latitudinal component of gravity wave stress | 195 | LGWS | Nm-2s | " | " |
| " | " | Meridional component of gravity wave stress | 196 | MGWS | Nm-2s | " | " |
/badc/ecmwf-op/data/T106/
They can also be accessed via the webserver (by registered BADC users) at:
http://badc.nerc.ac.uk/cgi-bin/data_browser/data_browser/badc/ecmwf-op/data/T106/
Upper air analysis fields on model levels (siuaYYMMDDHH)
The T106 Spectral resolution model level analysis fields are stored following the file-naming convention:
siuaYYMMDDHH
Where si means Spectral resolution (the "i" is historical, meaning initialised - this is not
relevant to the Operational data sets),
ua means upper air model levels,
and YYMMDDHH stand for the Year, Month, Day (of the month), and Hour (either 00, 06, 12 or
18).
The format of the files is GRIB.
The complete file and directory structure of the T106 Spectral model level analysis fields takes the form of:
/badc/ecmwf-op/data/T106/YYYY/siuaYYMM/siuaYYMMDDHH
Table 6. Parameters, dates and levels available for the ECMWF Operational
T106 Spectral upper air fields on model levels.
| Dates | Parameters | Levels | |||||
| Start | End | Parameters (Name) | ECMWF code (numeric) | ECMWF code | Units | Levels | Total Levels |
| 01/03/1994 | 03/04/1995 | Temperature | 130 | T | K | 1-31 | 31 |
| " | " | Specific humidity | 133 | SP | kg/kg | " | " |
| " | " | Vertical velocity | 135 | W | Pa s-1 | " | " |
| " | " | Vorticity (relative) | 138 | VO | s-1 | " | " |
| " | " | Log surface pressure | 152 | LNSP | - | " | " |
| " | " | Divergence | 155 | D | s-1 | " | " |
| 04/04/1995* | 28/02/1999** | Temperature | 130 | T | K | 1-31 | 31 |
| " | " | Vertical velocity | 135 | W | Pa s-1 | " | " |
| " | " | Vorticity (relative) | 138 | VO | s-1 | " | " |
| " | " | Log surface pressure | 152 | LNSP | - | " | " |
| " | " | Divergence | 155 | D | s-1 | " | " |
| 01/10/2000*** | 31/10/2000 | Temperature | 130 | T | K | 1-60 | 60 |
| " | " | Vertical velocity | 135 | W | Pa s-1 | " | " |
| " | " | Vorticity (relative) | 138 | VO | s-1 | " | " |
| " | " | Log surface pressure | 152 | LNSP | - | " | " |
| " | " | Divergence | 155 | D | s-1 | " | " |
Upper air analysis fields on pressure levels (siprYYMMDDHH)
The T106 Spectral resolution pressure level analysis fields are stored following the file-naming convention:
siprYYMMDDHH
Where si means Spectral resolution (the "i" is historical, meaning initialised - this is not
relevant to the Operational data sets),
pr means upper air pressure levels,
and YYMMDDHH stand for the Year, Month, Day (of the month), and Hour (either 00, 06, 12 or
18).
The format of the files is GRIB.
The complete file and directory structure of the T106 Spectral pressure level analysis fields takes the form of:
/badc/ecmwf-op/data/T106/YYYY/siprYYMM/siprYYMMDDHH
Table 7. Parameters, dates and levels available for the ECMWF Operational
T106 Spectral upper air fields on pressure levels.
| Dates | Parameters | Levels | |||||
| Start | End | Parameters (Name) | ECMWF code (numeric) | ECMWF code | Units | Levels | Total Levels |
| 01/03/1994 | 28/02/1999* | Geopotential | 129 | Z | m2 s-2 | 10, 30, 50, 70, 100, 150, 200, 250, 300, 400, 500, 700, 850, 925, 1000 hPa | 15 |
| " | " | Temperature | 130 | T | K | " | " |
| " | " | Vertical velocity | 135 | W | Pa s-1 | " | " |
| " | " | Vorticity (relative) | 138 | VO | s-1 | " | " |
| " | " | Divergence | 155 | D | s-1 | " | " |
| " | " | Relative humidity | 157 | R | % | " | " |
The orography files for Operational data sets are held in the directory:
/badc/ecmwf-op/data/orography or via the webserver
(by registered BADC users) at:
http://badc.nerc.ac.uk/cgi-bin/data_browser/data_browser/badc/ecmwf-op/data/orography/
There are four types of orography files:
The spectral orography file spor90010100 contains just the orography data (surface geopotential).
Depending on the age and grid type, the files will contain some of the constant fields listed in Table 8.
Table 7. Orography parameters and their ECMWF codes.
| Parameter name | ECMWF code (numeric) | ECMWF code |
| Geopotential (at the surface, orography) | 129 | Z |
| Standard deviation of orography | 160 | SDOR |
| Anisotropy of subgrid scale orography | 161 | ISOR |
| Angle of subgrid scale orography | 162 | ANOR |
| Slope of subgrid scale orography | 163 | SLOR |
| Land/Sea mask | 172 | LSM |
| EW component of sub-grid scale orographic variance | 190 | EWOV |
| NS component of sub-grid scale orographic variance | 191 | NSOV |
| NWSE component of sub-grid scale orographic variance | 192 | NWOV |
| NESW component of sub-grid scale orographic variance | 193 | NEOV |
/badc/ecmwf-op/data/gridded_1.125/
They can also be accessed via the webserver (by registered BADC users) at:
http://badc.nerc.ac.uk/cgi-bin/data_browser/data_browser/badc/ecmwf-op/data/gridded_1.125/
Upper air analysis fields on model levels (ML.[param].YYYYMMDDHH.grib)
The BADC currently only archives upper air data (on model levels ) on a regular 1.125° x 1.125° grid. The data is stored using the following the file-naming convention:
ML.[param].YYYYMMDDHH.grib
Where ML stands for model levels,
[param] is the parameter name (lnsp = Log (Natural) Surface Pressure, q = Specific Humidity, t
= Temperature, u = U-velocity, v = V-velocity, vort = Vorticity (relative), w = Vertical Velocity),
YYYYMMDDHH stand for the Year, Month, Day (of the month), and Hour (either 00, 06, 12 or
18),
and grib indicates the GRIB file format.
The complete file and directory structure of the regular 1.125° x 1.125° gridded data model level fields takes the form of:
/badc/ecmwf-op/data/gridded_1.125/YYYY/MM/DD/model/ML.[param].YYYYMMDDHH.grib
Table 3. Parameters, dates and levels available for the ECMWF Operational
regular 1.125° x 1.125° gridded upper air fields on model levels.
| Dates | Parameters | Levels | |||||
| Start | End | Parameters (Name) | ECMWF code (numeric) | ECMWF code | Units | Levels | Total Levels |
| 01/10/1998 | 11/10/1999 | Temperature | 130 | T | K | 1-50 | 50 |
| " | " | U-velocity | 131 | U | m2 s-2 | " | " |
| " | " | V-velocity | 132 | V | m2 s-2 | " | " |
| " | " | Specific Humidity | 133 | Q | kg/kg | " | " |
| " | " | Vertical velocity | 135 | W | Pa s-1 | " | " |
| " | " | Vorticity (relative) | 138 | VO | s-1 | " | " |
| " | " | Log surface pressure | 152 | LNSP | - | " | " |
| 12/10/1999* | 01/02/2006 00:00 | Temperature | 130 | T | K | 1-60 | 60 |
| " | " | U-velocity | 131 | U | m2 s-2 | " | " |
| " | " | V-velocity | 132 | V | m2 s-2 | " | " |
| " | " | Specific Humidity | 133 | Q | kg/kg | " | " |
| " | " | Vertical velocity | 135 | W | Pa s-1 | " | " |
| " | " | Vorticity (relative) | 138 | VO | s-1 | " | " |
| " | " | Log surface pressure | 152 | LNSP | - | " | " |
| 01/02/2006 06:00 | Now | Temperature | 130 | T | K | 1-91 | 91 |
| " | " | U-velocity | 131 | U | m2 s-2 | " | " |
| " | " | V-velocity | 132 | V | m2 s-2 | " | " |
| " | " | Specific Humidity | 133 | Q | kg/kg | " | " |
| " | " | Vertical velocity | 135 | W | Pa s-1 | " | " |
| " | " | Vorticity (relative) | 138 | VO | s-1 | " | " |
| " | " | Log surface pressure | 152 | LNSP | - | " | " |
Gaussian Gridded Analyses on Model Levels (ggamYYYYDDHHTTPPP.grb)
Table 1 shows the Model Level parameters available for Operational analysis data on the N80 Reduced Gaussian Grid. These files are located in the directory:
/badc/ecmwf-op/data/op_as_e40/gg/am/
They can also be accessed via the web-interface (by registered BADC users) at:
http://badc.nerc.ac.uk/cgi-bin/data_browser/data_browser/badc/ecmwf-op/data/op_as_e40/gg/am/
The N80 Reduced Gaussian Gridded model level analyses are stored following the BADC's ERA-40 file-naming convention.
The complete file and directory structure of the N80 Reduced Gaussian Gridded model level data takes the form of:
/badc/ecmwf-op/data/op_as_e40/gg/am/YYYY/MM/DD/ggamYYYYDDHHTTPPP.grb
Table 1. Parameters, dates and levels available for the ECMWF Operational N80 Reduced Gaussian Gridded model level fields.
| Dates | Parameters | Levels | |||||
| Start | End | Parameters (Name) | ECMWF code (numeric) | ECMWF code | Units | Levels | Total Levels |
| 01/09/2002 | 01/02/2006 00:00 | Specific humidity | 133 | Q | kg/kg | 1-60 | 60 |
| " | " | Ozone mass mixing ratio | 203 | O3 | kg/kg | " | " |
| 01/02/2006 06:00 | Now | Specific humidity | 133 | Q | kg/kg | 1-91 | 91 |
| " | " | Ozone mass mixing ratio | 203 | O3 | kg/kg | " | " |
Gaussian Gridded Analyses on Pressure Levels (ggapYYYYDDHHTTPPP.grb)
Table 2 shows the Pressure Level parameters available for Operational analysis data on the N80 Reduced Gaussian Grid.
Note: The pressure levels at 775 and 600hPa that are present in the ERA-40 dataset are not available in this dataset so the total number of levels is 21.
There are also two parameters, u-velocity and v-velocity, that are stored on a N80 Full Gaussian Grid (due to the interpolation from spectral fields). These files are located in the directory:
/badc/ecmwf-op/data/op_as_e40/gg/ap/
They can also be accessed via the web-interface (by registered BADC users) at:
http://badc.nerc.ac.uk/cgi-bin/data_browser/data_browser/badc/ecmwf-op/data/op_as_e40/gg/ap/
The N80 Reduced Gaussian Gridded pressure level analyses are stored following the BADC's ERA-40 file-naming convention.
The complete file and directory structure of the N80 Reduced Gaussian Gridded pressure level data takes the form of:
/badc/ecmwf-op/data/op_as_e40/gg/ap/YYYY/MM/DD/ggapYYYYDDHHTTPPP.grb
Table 2. Parameters, dates and levels available for the ECMWF
Operational N80 Reduced Gaussian Gridded pressure level fields.
| Dates | Parameters | Levels | |||||
| Start | End | Parameters (Name) | ECMWF code (numeric) | ECMWF code | Units | Levels | Total Levels |
| 01/09/2002 | Now | Potential vorticity | 60 | PV | m2 s-1 K kg-1 | 1,2,3,5,7,10,20,30,50,70,100,150,200,250,300,400,500,700,850,925,1000 | 21 |
| " | " | U-velocity* | 131 | U | m2 s-2 | " | " |
| " | " | V-velocity* | 132 | V | m2 s-2 | " | " |
| " | " | Specific humidity | 133 | Q | kg/kg | " | " |
| " | " | Ozone Mass Mixing Ratio | 203 | O3 | kg/kg | " | " |
Gaussian Gridded Analyses on Surface/Single Levels (ggasYYYYDDHHTTPPP.grb)
Table 3 shows the Surface/Single Level parameters available for Operational analysis data on the N80 Reduced Gaussian Grid. These files are located in the directory:
/badc/ecmwf-op/data/op_as_e40/gg/as/
They can also be accessed via the web-interface (by registered BADC users) at:
http://badc.nerc.ac.uk/cgi-bin/data_browser/data_browser/badc/ecmwf-op/data/op_as_e40/gg/as/
The N80 Reduced Gaussian Gridded surface/single level analyses are stored following the BADC's ERA-40 file-naming convention.
The complete file and directory structure of the N80 Reduced Gaussian Gridded surface/single level data takes the form of:
/badc/ecmwf-op/data/op_as_e40/gg/as/YYYY/MM/DD/ggasYYYYDDHHTTPPP.grb
Table 3. Parameters, dates and levels available for the ECMWF Operational N80 Reduced Gaussian Gridded surface/single level fields.
| Dates | Parameters | Levels | |||||
| Start | End | Parameters (Name) | ECMWF code (numeric) | ECMWF code | Units | Levels | Total Levels |
| 01/09/2002 | Now | Low vegetation cover | 27 | LVC | (0-1) | 1 | 1 |
| " | " | High vegetation cover | 28 | HVC | (0-1) | " | " |
| " | " | Low vegetation type (table index) | 29 | LVT | index | " | " |
| " | " | High vegetation type (table index) | 30 | HVT | index | " | " |
| " | " | Sea ice fraction (1 = full ice, 0 = no ice) | 31 | CI | (0, 1) | " | " |
| " | " | Snow albedo | 32 | ASN | - | " | " |
| " | " | Snow density | 33 | RSN | kg | " | " |
| " | " | Sea surface temperature | 34 | SSTK | K | " | " |
| " | " | Sea ice temperature layer 1 | 35 | ISTL1 | K | " | " |
| " | " | Sea ice temperature layer 2 | 36 | ISTL2 | K | " | " |
| " | " | Sea ice temperature layer 3 | 37 | ISTL3 | K | " | " |
| " | " | Sea ice temperature layer 4 | 38 | ISTL4 | K | " | " |
| " | " | Soil moisture level 1 (volumetric) | 39 | SWVL1 | m3/m3 | " | " |
| " | " | Soil moisture level 2 (volumetric) | 40 | SWVL2 | m3/m3 | " | " |
| " | " | Soil moisture level 3 (volumetric) | 41 | SWVL3 | m3/m3 | " | " |
| " | " | Soil moisture level 4 (volumetric) | 42 | SWVL4 | m3/m3 | " | " |
| " | " | Geopotential (at the surface = orography) | 129 | Z | m2 s-2 | " | " |
| " | " | Total column water | 136 | TCW | kg/m2 | " | " |
| " | " | Total column water vapour | 137 | TCWV | kg/m2 | " | " |
| " | " | Soil temperature level 1 | 139 | STL1 | K | " | " |
| " | " | Snow Depth | 141 | SD | m (of water equivalent) | " | " |
| " | " | Charnock parameter | 148 | CHNK | - | " | " |
| " | " | Mean sea level pressure | 151 | MSL | Pa | " | " |
| " | " | Standard deviation of subgrid scale orography | 160 | SDOR | - | " | " |
| " | " | Anisotropy of subgrid scale orography | 161 | ISOR | - | " | " |
| " | " | Angle of subgrid scale orography | 162 | ANOR | - | " | " |
| " | " | Slope of subgrid scale orography | 163 | SLOR | - | " | " |
| " | " | 10 metre u-wind component | 165 | 10U | m s-1 | " | " |
| " | " | 10 metre v-wind component | 166 | 10V | m s-1 | " | " |
| " | " | 2 metre temperature | 167 | 2T | K | " | " |
| " | " | 2 metre dewpoint temperature | 168 | 2D | K | " | " |
| " | " | Soil temperature level 2 | 170 | STL2 | K | " | " |
| " | " | Land/sea mask | 172 | LSM | (0, 1) | " | " |
| " | " | Surface roughness | 173 | SR | m | " | " |
| " | " | Albedo | 174 | AL | - | " | " |
| " | " | Soil temperature level 3 | 183 | STL3 | K | " | " |
| " | " | Low cloud cover | 186 | LCC | (0-1) | " | " |
| " | " | Medium cloud cover | 187 | MCC | (0-1) | " | " |
| " | " | High cloud cover | 188 | HCC | (0-1) | " | " |
| " | " | Skin reservoir content | 198 | SRC | m (of water) | " | " |
| " | " | Total column ozone | 206 | TCO3 | kg m-2 | " | " |
| " | " | Logarithm of surface roughness length for heat | 234 | LSRH | - | " | " |
| " | " | Skin temperature | 235 | SKT | K | " | " |
| " | " | Soil temperature level 4 | 236 | STL4 | K | " | " |
| " | " | Temperature of snow layer | 238 | TSN | K | " | " |
Gaussian Gridded Analyses on Potential Temperature Levels (ggatYYYYDDHHTTPPP.grb)
Table 4 shows the Potential Temperature Level parameters available for Operational analysis data on the N80 Reduced Gaussian Grid. These files are located in the directory:
/badc/ecmwf-op/data/op_as_e40/gg/at/
They can also be accessed via the web-interface (by registered BADC users) at:
http://badc.nerc.ac.uk/cgi-bin/data_browser/data_browser/badc/ecmwf-op/data/op_as_e40/gg/at/
The N80 Reduced Gaussian Gridded potential temperature level analyses are stored following the BADC's ERA-40 file-naming convention.
The complete file and directory structure of the N80 Reduced Gaussian Gridded potential temperature level data takes the form of:
/badc/ecmwf-op/data/op_as_e40/gg/at/YYYY/MM/DD/ggatYYYYDDHHTTPPP.grb
Table 4. Parameters, dates and levels available for the ECMWF Operational N80 Reduced Gaussian Gridded potential temperature level fields.
| Dates | Parameters | Levels | |||||
| Start | End | Parameters (Name) | ECMWF code (numeric) | ECMWF code | Units | Levels | Total Levels |
| 01/09/2002 | Now | Potential vorticity | 60 | PV | m2 s-1 K kg-1 | 265, 275, 285, 300, 315, 330, 350, 370, 395, 430, 475, 530, 600, 700, 850 | 15 |
| " | " | Specific humidity | 133 | Q | kg/kg | " | " |
| " | " | Ozone mass mixing ratio | 203 | O3 | kg/kg | " | " |
Gaussian Gridded Analyses on Potential Vorticity Levels (ggavYYYYDDHHTTPPP.grb)
Table 5 shows the Potential Vorticity Level parameters available for Operational analysis data on the N80 Reduced Gaussian Grid. These files are located in the directory:
/badc/ecmwf-op/data/op_as_e40/gg/av/
They can also be accessed via the web-interface (by registered BADC users) at:
http://badc.nerc.ac.uk/cgi-bin/data_browser/data_browser/badc/ecmwf-op/data/op_as_e40/gg/av/
The N80 Reduced Gaussian Gridded potential vorticity level analyses are stored following the BADC's ERA-40 file-naming convention.
The complete file and directory structure of the N80 Reduced Gaussian Gridded potential vorticity level data takes the form of:
/badc/ecmwf-op/data/op_as_e40/gg/av/YYYY/MM/DD/ggavYYYYDDHHTTPPP.grb
Table 5. Parameters, dates and levels available for the ECMWF Operational N80 Reduced Gaussian Gridded potential vorticity level fields.
| Dates | Parameters | Levels | |||||
| Start | End | Parameters (Name) | ECMWF code (numeric) | ECMWF code | Units | Levels | Total Levels |
| 01/09/2002 | Now | Potential temperature | 3 | PT | K | 1 | 1 |
| " | " | Pressure | 54 | PRES | Pa | " | " |
| " | " | Geopotential (at the surface = orography) | 129 | Z | m2 s-2 | " | " |
| " | " | U-velocity | 131 | U | ms-1 | " | " |
| " | " | V-velocity | 132 | V | ms-1 | " | " |
| " | " | Specific humidity | 133 | Q | kg/kg | " | " |
| " | " | Ozone mass mixing ratio | 203 | O3 | kg/kg | " | " |
Gaussian Gridded Forecasts on Model Levels (ggfmYYYYDDHHTTPPP.grb)
Table 6 shows the Model Level parameters available for Operational forecast data on the N80 Reduced Gaussian Grid. These files are located in the directory:
/badc/ecmwf-op/data/op_as_e40/gg/fm/
They can also be accessed via the web-interface (by registered BADC users) at:
http://badc.nerc.ac.uk/cgi-bin/data_browser/data_browser/badc/ecmwf-op/data/op_as_e40/gg/fm/
The N80 Reduced Gaussian Gridded potential vorticity level forecasts are stored following the BADC's ERA-40 file-naming convention.
The complete file and directory structure of the N80 Reduced Gaussian Gridded model level data takes the form of:
/badc/ecmwf-op/data/op_as_e40/gg/fm/YYYY/MM/DD/ggfmYYYYDDHHTTPPP.grb
Table 6. Parameters, dates and levels available for the ECMWF Operational N80 Reduced Gaussian Gridded model level fields.
| Dates | Parameters | Levels | |||||
| Start | End | Parameters (Name) | ECMWF code (numeric) | ECMWF code | Units | Levels | Total Levels |
| 01/09/2002 | 01/02/2006 00:00 | Cloud liquid water content | 246 | CLWC | kg/kg | 1-60 | 60 |
| " | " | Cloud ice water content | 247 | CIWC | kg/kg | " | " |
| " | " | Cloud cover | 248 | CC | (0-1) | " | " |
| 01/02/2006 06:00 | Now | Cloud liquid water content | 246 | CLWC | kg/kg | 1-60 | 60 |
| " | " | Cloud ice water content | 247 | CIWC | kg/kg | " | " |
| " | " | Cloud cover | 248 | CC | (0-1) | " | " |
Gaussian Gridded Forecasts on Surface/Single Levels (ggfsYYYYDDHHTTPPP.grb)
Table 7 shows the Surface/Single Level parameters available for Operational forecast data on the N80 Reduced Gaussian Grid. These files are located in the directory:
/badc/ecmwf-op/data/op_as_e40/gg/fs/
They can also be accessed via the web-interface (by registered BADC users) at:
http://badc.nerc.ac.uk/cgi-bin/data_browser/data_browser/badc/ecmwf-op/data/op_as_e40/gg/fs/
The N80 Reduced Gaussian Gridded surface/single level forecasts are stored following the BADC's ERA-40 file-naming convention.
The complete file and directory structure of the N80 Reduced Gaussian Gridded surface/single level data takes the form of:
/badc/ecmwf-op/data/op_as_e40/gg/fsYYYY/MM/DD/ggfsYYYYDDHHTTPPP.grb
Table 7. Parameters, dates and levels available for the ECMWF Operational N80 Reduced Gaussian Gridded surface/single level fields.
| Dates | Parameters | Levels | |||||
| Start | End | Parameters (Name) | ECMWF code (numeric) | ECMWF code | Units | Levels | Total Levels |
| 01/09/2002 | Now | Snow evaporation (accum.) | 44 | ES | m | 1 | 1 |
| " | " | Snow melt (accum.) | 45 | SMLT | m | " | " |
| " | " | Wind gusts at 10 m | 49 | 10FG | m s-1 | " | " |
| " | " | Large scale precipitation fraction (accum.) | 50 | LSPF | s | " | " |
| " | " | Large scale precipitation (accum.) | 142 | LSP | m | " | " |
| " | " | Convective precipitation (accum.) | 143 | CP | m | " | " |
| " | " | Snow fall (accum.) | 144 | SF | m (of water equivalent) | " | " |
| " | " | Boundary layer dissipation (accum.) | 145 | BLD | W m-2s | " | " |
| " | " | Surface sensible heat flux (accum.) | 146 | SSHF | W m-2s | " | " |
| " | " | Surface latent heat flux (accum.) | 147 | SLHF | W m-2s | " | " |
| " | " | Boundary layer height | 159 | BLH | m | " | " |
| " | " | Total cloud cover | 164 | TCC | (0-1) | " | " |
| " | " | Downward surface solar radiation (accum.) | 169 | SSRD | W m-2s | " | " |
| " | " | Downward surface thermal radiation (accum.) | 175 | STRD | W m-2s | " | " |
| " | " | Surface solar radiation (accum.) | 176 | SSR | W m-2s | " | " |
| " | " | Surface thermal radiation (accum.) | 177 | STR | W m-2s | " | " |
| " | " | Top solar radiation (accum.) | 178 | TSR | W m-2s | " | " |
| " | " | Top thermal radiation (accum.) | 179 | TTR | W m-2s | " | " |
| " | " | East/West surface stress (accum.) | 180 | EWSS | N m-2s | " | " |
| " | " | North/South surface stress (accum.) | 181 | NSSS | N m-2s | " | " |
| " | " | Evaporation (accum.) | 182 | E | m (of water) | " | " |
| " | " | Sunshine duration since last post-processing step | 189 | SUND | s | " | " |
| " | " | Latitudinal component of gravity wave stress (accum.) | 195 | LGWS | N m-2s | " | " |
| " | " | Meridional component of gravity wave stress (accum.) | 196 | MGWS | N m-2s | " | " |
| " | " | Gravity wave dissipation (accum.) | 197 | GWD | W m-2s | " | " |
| " | " | Runoff (accum.) | 201 | RO | m | " | " |
| " | " | Minimum temp. at 2m since previous post-processing | 202 | MN2T | K | " | " |
| " | " | Ozone mass mixing ratio | 205 | O3 | kg/kg | " | " |
| " | " | Top solar radiation clear sky (accum.) | 208 | TSRC | W m-2s | " | " |
| " | " | Top thermal radiation clear sky (accum.) | 209 | TTRC | W m-2s | " | " |
| " | " | Surface solar radiation clear sky (accum.) | 210 | SSRC | W m-2s | " | " |
| " | " | Surface thermal radiation clear sky (accum.) | 211 | STRC | W m-2s | " | " |
| " | " | Forecast albedo | 243 | FAL | - | " | " |
| " | " | Forecast surface roughness | 244 | FSR | m | " | " |
| " | " | Forecast logarithm of surface roughness for heat | 245 | FLSR | - | " | " |
Spectral T159 Analyses on Model Levels (spamYYYYDDHHTTPPP.grb)
Table 8 shows the Model Level parameters available for Operational analysis data at Spectral T159 resolution. These files are located in the directory:
/badc/ecmwf-op/data/op_as_e40/sp/am/
They can also be accessed via the web-interface (by registered BADC users) at:
http://badc.nerc.ac.uk/cgi-bin/data_browser/data_browser/badc/ecmwf-op/data/op_as_e40/sp/am/
The Spectral T159 model level analyses are stored following the BADC's ERA-40 file-naming convention.
The complete file and directory structure of the N80 Reduced Gaussian Gridded model level data takes the form of:
/badc/ecmwf-op/data/op_as_e40/sp/am/YYYY/MM/DD/spamYYYYDDHHTTPPP.grb
Table 8. Parameters, dates and levels available for the ECMWF Operational Spectral T159 model level fields.
| Dates | Parameters | Levels | |||||
| Start | End | Parameters (Name) | ECMWF code (numeric) | ECMWF code | Units | Levels | Total Levels |
| 01/09/2002 | 01/02/2006 00:00 | Geopotential (at the surface = orography) | 129 | Z | m2 s-2 | 1-60 | 60 |
| " | " | Temperature | 130 | T | K | " | " |
| " | " | U-velocity | 131 | U | ms-1 | " | " |
| " | " | V-velocity | 132 | V | ms-1 | " | " |
| " | " | Vertical velocity | 135 | W | Pa s-1 | " | " |
| " | " | Vorticity (relative) | 138 | VO | s-1 | " | " |
| " | " | Log surface pressure | 152 | LNSP | - | " | " |
| " | " | Divergence | 155 | D | s-1 | " | " |
| 01/02/2006 06:00 | Now | Geopotential (at the surface = orography) | 129 | Z | m2 s-2 | 1-60 | 60 |
| " | " | Temperature | 130 | T | K | " | " |
| " | " | U-velocity | 131 | U | ms-1 | " | " |
| " | " | V-velocity | 132 | V | ms-1 | " | " |
| " | " | Vertical velocity | 135 | W | Pa s-1 | " | " |
| " | " | Vorticity (relative) | 138 | VO | s-1 | " | " |
| " | " | Log surface pressure | 152 | LNSP | - | " | " |
| " | " | Divergence | 155 | D | s-1 | " | " |
Spectral T159 Analyses on Pressure Levels (spapYYYYDDHHTTPPP.grb)
Table 9 shows the Pressure Level parameters available for Operational analysis data at Spectral T159 resolution. These files are located in the directory:
/badc/ecmwf-op/data/op_as_e40/sp/ap/
They can also be accessed via the web-interface (by registered BADC users) at:
http://badc.nerc.ac.uk/cgi-bin/data_browser/data_browser/badc/ecmwf-op/data/op_as_e40/sp/ap/
The Spectral T159 pressure level analyses are stored following the BADC's ERA-40 file-naming convention.
The complete file and directory structure of the N80 Reduced Gaussian Gridded pressure level data takes the form of:
/badc/ecmwf-op/data/op_as_e40/sp/ap/YYYY/MM/DD/spapYYYYDDHHTTPPP.grb
Table 9. Parameters, dates and levels available for the ECMWF Operational Spectral T159 pressure level fields.
| Dates | Parameters | Levels | |||||
| Start | End | Parameters (Name) | ECMWF code (numeric) | ECMWF code | Units | Levels | Total Levels |
| 01/09/2002 | Now | Geopotential (at the surface = orography) | 129 | Z | m2 s-2 | 1,2,3,5,7,10,20,30,50,70,100,150,200,250,300,400, 500,600,700,775,850,925,1000 | 23 |
| " | " | Temperature | 130 | T | K | " | " |
| " | " | U-velocity | 131 | U | ms-1 | " | " |
| " | " | V-velocity | 132 | V | ms-1 | " | " |
| " | " | Vertical velocity | 135 | W | Pa s-1 | " | " |
| " | " | Vorticity (relative) | 138 | VO | s-1 | " | " |
| " | " | Divergence | 155 | D | s-1 | " | " |
| " | " | Relative humidity | 157 | R | % | " | " |
Spectral T159 Analyses on Potential Temperature Levels (spatYYYYDDHHTTPPP.grb)
Table 10 shows the Potential Temperature Level parameters available for Operational analysis data at Spectral T159 resolution. These files are located in the directory:
/badc/ecmwf-op/data/op_as_e40/sp/at/
They can also be accessed via the web-interface (by registered BADC users) at:
http://badc.nerc.ac.uk/cgi-bin/data_browser/data_browser/badc/ecmwf-op/data/op_as_e40/sp/at/
The Spectral T159 potential temperature level analyses are stored following the BADC's ERA-40 file-naming convention.
The complete file and directory structure of the N80 Reduced Gaussian Gridded potential temperature level data takes the form of:
/badc/ecmwf-op/data/op_as_e40/sp/at/YYYY/MM/DD/spatYYYYDDHHTTPPP.grb
Table 10. Parameters, dates and levels available for the ECMWF Operational Spectral T159 potential temperature level fields.
| Dates | Parameters | Levels | |||||
| Start | End | Parameters (Name) | ECMWF code (numeric) | ECMWF code | Units | Levels | Total Levels |
| 01/09/2002 | Now | Montgomery potential | 53 | MONT | m2 s-2 | 1,2,3,5,7,10,20,30,50,70,100,150,200,250,300,400,500,600,700,775,850,925,1000 | 23 |
| " | " | Pressure | 54 | PRES | Pa | " | " |
| " | " | U-velocity | 131 | U | ms-1 | " | " |
| " | " | V-velocity | 132 | V | ms-1 | " | " |
| " | " | Vorticity (relative) | 138 | VO | s-1 | " | " |
| " | " | Divergence | 155 | D | s-1 | " | " |
Forecast files contain parameters that are not available in the analyses. Such parameters are accumulated from the analysis time to the time of the forecast.
The content of the ECMWF forecasts held at the BADC depend on which data resolution is being used. The N80 Full Gaussian Gridded forecasts (i.e. filenames beginning with 'gpsfo') represent a forecast from midday (12hr) on the date in the filename to 24 hours later (12hr the next day). This is consistent with files produced during the ERA-15 period.
The N80 Reduced Gaussian Gridded forecasts (i.e. filenames beginning 'ggfm' or 'ggfs') are archived to cover the entire day of the date in the filename. The 24-hour forecasts therefore start at 00hr on the morning of a given day and span through until midnight that day. For example, a forecast file for 25 February 2003 would include "2003022500" in its name and would represent accumulated fields for the entire 24-hour period of that day.
Both datasets therefore only produce 1 forecast file per day. Note that the ECMWF actually provides all the analysis fields at forecast times as well, this data is not archived at the BADC.