ECMWF AIFS
ECMWF's AI-based forecasting model that provides global weather forecasts at 0.25° resolution.
Technical Specifications
Available Weather Parameters
AIFS uses standardized variable naming conventions. For full details on the naming structure, see Weather Variable Naming.
2t
air_temperature_at_height_level_2m
Air temperature at 2m
Kelvin
10si
wind_speed_at_height_level_10m
Horizontal wind speed at 10m
m s⁻¹
10wdir
wind_direction_at_height_level_10m
Horizontal wind direction at 10m
Degrees true
100si
wind_speed_at_height_level_100m
Horizontal wind speed at 100m
m s⁻¹
100wdir
wind_direction_at_height_level_100m
Horizontal wind direction at 100m
Degrees true
msl
air_pressure_at_mean_sea_level
Mean Sea-level Pressure
Pa
z_500
wind_direction_at_height_level_100m
Geopotential
m² s⁻²
Note: For information on the previous naming convention used in EPT-1.5, see Legacy Naming.
Hindcasts Details
Full hindcast dataset available for performance analysis and evaluation
Hindcasts are global with a grid of 721×1440
Hindcasts are from
2023-01-02to2024-12-27Hindcasts are run 4 times a day at 00, 06, 12, 18 UTC
Hindcasts are chunked as
(time: 1, prediction_timedelta: 81, lat: 120, lon: 240)Forecasts are 6-hourly from days 0 to 20
Last updated