GribStream
aifsenfo
AIFS Ensemble is ECMWF’s AI-based probabilistic global forecast. It generates multiple members with a stochastic ML model trained on reanalysis and fine-tuned on operational analyses, then initializes member-for-member from the IFS Ensemble. The system is trained with a probabilistic objective (e.g., CRPS) to produce calibrated spread and skill. Outputs include standard surface variables and pressure-level fields (temperature, wind, humidity, geopotential, vertical velocity), plus ensemble statistics and event probabilities. Related suite: AIFS Oper.
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| Name | Level | Info | Description | Introduced | Min Horizon | Max Horizon |
|---|---|---|---|---|---|---|
| 100u | sfc | 100m U-Component of Wind (m/s) | 2025-07-02T00:00:00Z | 0 | 360 | |
| 100v | sfc | 100m V-Component of Wind (m/s) | 2025-07-02T00:00:00Z | 0 | 360 | |
| 10u | sfc | 10m U-Component of Wind (m/s) | 2025-07-02T00:00:00Z | 0 | 360 | |
| 10v | sfc | 10m V-Component of Wind (m/s) | 2025-07-02T00:00:00Z | 0 | 360 | |
| 2d | sfc | 2m Dewpoint Temperature (K) | 2025-07-02T00:00:00Z | 0 | 360 | |
| 2t | sfc | 2m Temperature (K) | 2025-07-02T00:00:00Z | 0 | 360 | |
| hcc | sfc | High cloud cover (%) | 2025-07-02T00:00:00Z | 0 | 360 | |
| lcc | sfc | Low cloud cover (%) | 2025-07-02T00:00:00Z | 0 | 360 | |
| lsm | sfc | Land-Sea Mask (land=1/sea=0) | 2025-07-02T00:00:00Z | 0 | 0 | |
| msl | sfc | Mean Sea Level Pressure (Pa) | 2025-07-02T00:00:00Z | 0 | 360 | |
| q | pl 100 | Specific Humidity (kg/kg) | 2025-07-02T00:00:00Z | 0 | 360 | |
| q | pl 1000 | Specific Humidity (kg/kg) | 2025-07-02T00:00:00Z | 0 | 360 | |
| q | pl 150 | Specific Humidity (kg/kg) | 2025-07-02T00:00:00Z | 0 | 360 | |
| q | pl 200 | Specific Humidity (kg/kg) | 2025-07-02T00:00:00Z | 0 | 360 | |
| q | pl 250 | Specific Humidity (kg/kg) | 2025-07-02T00:00:00Z | 0 | 360 | |
| q | pl 300 | Specific Humidity (kg/kg) | 2025-07-02T00:00:00Z | 0 | 360 | |
| q | pl 400 | Specific Humidity (kg/kg) | 2025-07-02T00:00:00Z | 0 | 360 | |
| q | pl 50 | Specific Humidity (kg/kg) | 2025-07-02T00:00:00Z | 0 | 360 | |
| q | pl 500 | Specific Humidity (kg/kg) | 2025-07-02T00:00:00Z | 0 | 360 | |
| q | pl 600 | Specific Humidity (kg/kg) | 2025-07-02T00:00:00Z | 0 | 360 | |
| q | pl 700 | Specific Humidity (kg/kg) | 2025-07-02T00:00:00Z | 0 | 360 | |
| q | pl 850 | Specific Humidity (kg/kg) | 2025-07-02T00:00:00Z | 0 | 360 | |
| q | pl 925 | Specific Humidity (kg/kg) | 2025-07-02T00:00:00Z | 0 | 360 | |
| rowe | sfc | Runoff water equivalent (surface plus subsurface) (kg/m^2) | 2025-07-02T00:00:00Z | 0 | 360 | |
| sdor | sfc | Orographic Standard Deviation (m) | 2025-07-02T00:00:00Z | 0 | 0 | |
| sf | sfc | Snowfall (m) | 2025-07-02T00:00:00Z | 0 | 360 | |
| skt | sfc | Skin temperature (K) | 2025-07-02T00:00:00Z | 0 | 360 | |
| slor | sfc | Slope of sub-gridscale orography (%) | 2025-07-02T00:00:00Z | 0 | 0 | |
| sot | sol 1 | Soil Temperature (K) | 2025-07-02T00:00:00Z | 0 | 360 | |
| sot | sol 2 | Soil Temperature (K) | 2025-07-02T00:00:00Z | 0 | 360 | |
| sp | sfc | Surface Pressure (Pa) | 2025-07-02T00:00:00Z | 0 | 360 | |
| ssrd | sfc | Surface Net Downward Shortwave Radiation (J/m^2) | 2025-07-02T00:00:00Z | 0 | 360 | |
| strd | sfc | Surface Net Downward Longwave Radiation (J/m^2) | 2025-07-02T00:00:00Z | 0 | 360 | |
| t | pl 100 | Temperature (K) | 2025-07-02T00:00:00Z | 0 | 360 | |
| t | pl 1000 | Temperature (K) | 2025-07-02T00:00:00Z | 0 | 360 | |
| t | pl 150 | Temperature (K) | 2025-07-02T00:00:00Z | 0 | 360 | |
| t | pl 200 | Temperature (K) | 2025-07-02T00:00:00Z | 0 | 360 | |
| t | pl 250 | Temperature (K) | 2025-07-02T00:00:00Z | 0 | 360 | |
| t | pl 300 | Temperature (K) | 2025-07-02T00:00:00Z | 0 | 360 | |
| t | pl 400 | Temperature (K) | 2025-07-02T00:00:00Z | 0 | 360 | |
| t | pl 50 | Temperature (K) | 2025-07-02T00:00:00Z | 0 | 360 | |
| t | pl 500 | Temperature (K) | 2025-07-02T00:00:00Z | 0 | 360 | |
| t | pl 600 | Temperature (K) | 2025-07-02T00:00:00Z | 0 | 360 | |
| t | pl 700 | Temperature (K) | 2025-07-02T00:00:00Z | 0 | 360 | |
| t | pl 850 | Temperature (K) | 2025-07-02T00:00:00Z | 0 | 360 | |
| t | pl 925 | Temperature (K) | 2025-07-02T00:00:00Z | 0 | 360 | |
| tcc | sfc | Total cloud cover (%) | 2025-07-02T00:00:00Z | 0 | 360 | |
| tcw | sfc | Total Column Water (kg/m^2) | 2025-07-02T00:00:00Z | 0 | 360 | |
| tp | sfc | Total Precipitation (m) | 2025-07-02T00:00:00Z | 0 | 360 | |
| u | pl 100 | U-Component of Wind (m/s) | 2025-07-02T00:00:00Z | 0 | 360 | |
| u | pl 1000 | U-Component of Wind (m/s) | 2025-07-02T00:00:00Z | 0 | 360 | |
| u | pl 150 | U-Component of Wind (m/s) | 2025-07-02T00:00:00Z | 0 | 360 | |
| u | pl 200 | U-Component of Wind (m/s) | 2025-07-02T00:00:00Z | 0 | 360 | |
| u | pl 250 | U-Component of Wind (m/s) | 2025-07-02T00:00:00Z | 0 | 360 | |
| u | pl 300 | U-Component of Wind (m/s) | 2025-07-02T00:00:00Z | 0 | 360 | |
| u | pl 400 | U-Component of Wind (m/s) | 2025-07-02T00:00:00Z | 0 | 360 | |
| u | pl 50 | U-Component of Wind (m/s) | 2025-07-02T00:00:00Z | 0 | 360 | |
| u | pl 500 | U-Component of Wind (m/s) | 2025-07-02T00:00:00Z | 0 | 360 | |
| u | pl 600 | U-Component of Wind (m/s) | 2025-07-02T00:00:00Z | 0 | 360 | |
| u | pl 700 | U-Component of Wind (m/s) | 2025-07-02T00:00:00Z | 0 | 360 | |
| u | pl 850 | U-Component of Wind (m/s) | 2025-07-02T00:00:00Z | 0 | 360 | |
| u | pl 925 | U-Component of Wind (m/s) | 2025-07-02T00:00:00Z | 0 | 360 | |
| v | pl 100 | V-Component of Wind (m/s) | 2025-07-02T00:00:00Z | 0 | 360 | |
| v | pl 1000 | V-Component of Wind (m/s) | 2025-07-02T00:00:00Z | 0 | 360 | |
| v | pl 150 | V-Component of Wind (m/s) | 2025-07-02T00:00:00Z | 0 | 360 | |
| v | pl 200 | V-Component of Wind (m/s) | 2025-07-02T00:00:00Z | 0 | 360 | |
| v | pl 250 | V-Component of Wind (m/s) | 2025-07-02T00:00:00Z | 0 | 360 | |
| v | pl 300 | V-Component of Wind (m/s) | 2025-07-02T00:00:00Z | 0 | 360 | |
| v | pl 400 | V-Component of Wind (m/s) | 2025-07-02T00:00:00Z | 0 | 360 | |
| v | pl 50 | V-Component of Wind (m/s) | 2025-07-02T00:00:00Z | 0 | 360 | |
| v | pl 500 | V-Component of Wind (m/s) | 2025-07-02T00:00:00Z | 0 | 360 | |
| v | pl 600 | V-Component of Wind (m/s) | 2025-07-02T00:00:00Z | 0 | 360 | |
| v | pl 700 | V-Component of Wind (m/s) | 2025-07-02T00:00:00Z | 0 | 360 | |
| v | pl 850 | V-Component of Wind (m/s) | 2025-07-02T00:00:00Z | 0 | 360 | |
| v | pl 925 | V-Component of Wind (m/s) | 2025-07-02T00:00:00Z | 0 | 360 | |
| w | pl 100 | Vertical Velocity (m/s) | 2025-07-02T00:00:00Z | 0 | 360 | |
| w | pl 1000 | Vertical Velocity (m/s) | 2025-07-02T00:00:00Z | 0 | 360 | |
| w | pl 150 | Vertical Velocity (m/s) | 2025-07-02T00:00:00Z | 0 | 360 | |
| w | pl 200 | Vertical Velocity (m/s) | 2025-07-02T00:00:00Z | 0 | 360 | |
| w | pl 250 | Vertical Velocity (m/s) | 2025-07-02T00:00:00Z | 0 | 360 | |
| w | pl 300 | Vertical Velocity (m/s) | 2025-07-02T00:00:00Z | 0 | 360 | |
| w | pl 400 | Vertical Velocity (m/s) | 2025-07-02T00:00:00Z | 0 | 360 | |
| w | pl 50 | Vertical Velocity (m/s) | 2025-07-02T00:00:00Z | 0 | 360 | |
| w | pl 500 | Vertical Velocity (m/s) | 2025-07-02T00:00:00Z | 0 | 360 | |
| w | pl 600 | Vertical Velocity (m/s) | 2025-07-02T00:00:00Z | 0 | 360 | |
| w | pl 700 | Vertical Velocity (m/s) | 2025-07-02T00:00:00Z | 0 | 360 | |
| w | pl 850 | Vertical Velocity (m/s) | 2025-07-02T00:00:00Z | 0 | 360 | |
| w | pl 925 | Vertical Velocity (m/s) | 2025-07-02T00:00:00Z | 0 | 360 | |
| z | pl 100 | Geopotential (m^2/s^2) | 2025-07-02T00:00:00Z | 0 | 360 | |
| z | pl 1000 | Geopotential (m^2/s^2) | 2025-07-02T00:00:00Z | 0 | 360 | |
| z | pl 150 | Geopotential (m^2/s^2) | 2025-07-02T00:00:00Z | 0 | 360 | |
| z | pl 200 | Geopotential (m^2/s^2) | 2025-07-02T00:00:00Z | 0 | 360 | |
| z | pl 250 | Geopotential (m^2/s^2) | 2025-07-02T00:00:00Z | 0 | 360 | |
| z | pl 300 | Geopotential (m^2/s^2) | 2025-07-02T00:00:00Z | 0 | 360 | |
| z | pl 400 | Geopotential (m^2/s^2) | 2025-07-02T00:00:00Z | 0 | 360 | |
| z | pl 50 | Geopotential (m^2/s^2) | 2025-07-02T00:00:00Z | 0 | 360 | |
| z | pl 500 | Geopotential (m^2/s^2) | 2025-07-02T00:00:00Z | 0 | 360 | |
| z | pl 600 | Geopotential (m^2/s^2) | 2025-07-02T00:00:00Z | 0 | 360 | |
| z | pl 700 | Geopotential (m^2/s^2) | 2025-07-02T00:00:00Z | 0 | 360 | |
| z | pl 850 | Geopotential (m^2/s^2) | 2025-07-02T00:00:00Z | 0 | 360 | |
| z | pl 925 | Geopotential (m^2/s^2) | 2025-07-02T00:00:00Z | 0 | 360 | |
| z | sfc | Geopotential (m^2/s^2) | 2025-07-02T00:00:00Z | 0 | 0 |