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The first year of the AI Weather Quest is divided into four 13-week competitive periods. After each period, and following the end-of-period webinar and forecast evaluation, submitted forecasts are made publicly available following the schedule below (where each acronym refers to the forecasted months, i.e. SON is September, October, November):
| Competition period | Release date |
|---|---|
| SON 2025 | 12th December 2025 |
| DJF 2025/2026 | 16th March 2026 |
| MAM 2026 | 15th June 2026 |
| JJA 2026 | 14th September 2026 |
Portal directory structure
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- Categorised by forecast initialisation date:
[ROOT]/by_fc_date/[fc_init_date]/[teamname]/[modelname]/[forecast_file]- Categorised by team:
[ROOT]/by_team/[teamname]/[modelname]/[fc_init_date]/[forecast_file]...
Forecast initialisation date:
[ROOT]/by_fc_date_zipfiles/[fc_init_date].zip- Team:
[ROOT]/by_team_zipfiles/[teamname].zipThe following are examples use the wget functionality:
Download near-surface temperature forecasts initialised on the 14th August 2025, for the first forecasting period, and submitted by team AIFS under the model name AIFSgaia:
wget https://data.ecmwf.int/ai-weatherquest/by_fc_date/20250814/AIFS/AIFSgaia/tas_20250814_p1_AIFS_AIFSgaia.ncDownload all forecasts submitted by team AIFS throughout the competition:
wget https://data.ecmwf.int/ai-weatherquest/by_team_zipfiles/AIFS.tar.gz...
Finally, we recommend using the following tar command to unzip zip files.
tar -czf [zip_file] [new_directory] tar -czf AIFS.tar.gz AIFS_forecasts/...