Microsoft Aurora

Microsoft's AI-based global weather model that provides 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.

Parameter Code
API Name
Description
Units

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

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 720x1440

  • Hindcasts are from 2023-01-02 to 2024-12-27

  • Hindcasts are run 4 times a day at 00, 06, 12, 18

  • Hindcasts are chunked as (time: 1, prediction_timedelta: 81, lat: 180, lon: 360)

    • Each chunk is approximately 35.6 MB

  • Forecasts are 6 hourly for 20 days

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