Period : 195709 - 200208
Horizontal grid : 145x73 (2.5 deg) B grid (CMC/RPN)
Vertical info : 23 pressure levels from 1 hPa to 1000 hPa
Data source : http://data.ecmwf.int/data/d/era40/
Documentation : http://www.ecmwf.int/research/era/Products/Archive_Plan/Archive_plan_toc.html
Location : ~data/Validation/ERA40
Driving data : Atmospheric driving data on pressure levels
Other 6-hourly and monthly mean fields :
on 23 pressure levels (1, 2, 3, 5, 7, 10, 20, 30, 50, 70, 100, 150, 200, 250, 300, 400, 500, 600, 700, 775, 850, 925, 1000 hPa) :
| NAME | DESCRIPTION | UNIT |
|---|---|---|
| TT | Air temperature | C |
| GZ | Geopotential | gdm |
| HU | Specific humidity | kg/kg |
| HR | Relative humidity | % |
| UU | U wind component | knots |
| VV | V wind component | knots |
| WP | vertical velocity | Pa/s |
| DD | Divergence | 1/s |
| QR | Relative vorticity | 1/s |
| PVOR | Potential vorticity | |
| OZ | Ozone gas | ppb |
on model levels :
| ACC | NAME | LEVEL | DESCRIPTION | UNIT |
|---|---|---|---|---|
| GL | Sea-ice cover | 0-1 | ||
| I0 | 1-4 | Soil temperature level 1-4 | K | |
| I1 | 1-4 | Volumetric soil water layer 1-4 | m3/m3 | |
| I5 | SWE, Snow depth (m of equivalent water) SNOMA(I5)=1000*SNORO(7S)*SD | m | ||
| I7 | 1-4 | Ice surface temperature layer 1-4 | K | |
| A | O7 | Snow evaporation (m of water) | m/s | |
| A | SMLT | Snowmelt (m of water) | m/s | |
| CWTR | Total column water (liquid+Ice+Vapour) (kg/m**2) | kg/m2 | ||
| PW | Total column water vapour (kg/m**2) | kg/m2 | ||
| A | AE | Stratiform precipitation (Large-scale precipitation) | m/s | |
| A | PC | Convective precipitation | m/s | |
| A | SN | Snowfall (convective + stratiform) | m/s | |
| A | AH | Surface sensible heat flux | W/m2 | |
| A | AV | Surface latent heat flux | W/m2 | |
| PN | Mean sea level pressure | hPa | ||
| H | Boundary layer height | m | ||
| NT | Total cloud cover (instantaneous) | 0-1 | ||
| UU | 1sg | 10 metre U wind component | knots | |
| VV | 1sg | 10 metre V wind component | knots | |
| TT | 1sg | 2 metre temperature | C | |
| TD | 1sg | 2 metre dewpoint temperature | C | |
| A | N4 | Surface solar radiation downwards = AS/(1-AL(5)) | W/m2 | |
| A | AD | Surface thermal radiation downwards | W/m2 | |
| A | AS | Surface solar radiation | W/m2 | |
| A | AI | Surface thermal radiation | W/m2 | |
| A | TOAS | Top solar radiation = (AB-AU) | W/m2 | |
| A | AR | Top thermal radiation | W/m2 | |
| A | S7 | East-West surface stress | (N/m2) | |
| A | S8 | North-South surface stress | (N/m2) | |
| A | EVAP | Evaporation (m of water) | m/s | |
| NB | Low cloud cover | 0-1 | ||
| NM | Medium cloud cover | 0-1 | ||
| NH | High cloud cover | 0-1 | ||
| A | UG | Latitudinal component of gravity wave stress | m/s3 | |
| A | V6 | Meridional component of gravity wave stress | m/s3 | |
| A | N0 | Runoff (m of water) | m/s | |
| O3 | Total column ozone (kg/m**2) | kg/m2 | ||
| A | SN_C | Top net solar radiation, clear sky | W/m2 | |
| A | LN_C | Top net thermal radiation, clear sky | W/m2 | |
| A | SN_C | Surface net solar radiation, clear sky | W/m2 | |
| A | LN_C | Surface net thermal radiation, clear sky | W/m2 | |
| WV_H | Significant wave height | |||
| WV_D | Mean wave direction | |||
| WV_P | Mean wave period | |||
| TN | Temperature of snow layer | K |