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- Hourly fields are based on the next hour observations with respect to valid time.
- 24-hour rolling average fields are based on the next 0-23 hourly fields (next 0-24 hour observations) with respect to valid time.
Data access
The latest seven days of the data CAMS GFAS data 1.4.2 from December 2025 to the present can be accessed through the ECMWF data portal (aux.ecmwf.int; SFTP/FTP/HTTPS data access).
To get access to CAMS GFAS data, you need a user accounts on the ECMWF website, and on the ECMWF data portal. For more details please see here.
Before downloading data, users must accept the license on the Atmosphere Data Store.
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