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A subset of the CAMS Global atmospheric composition forecast data for the latest three days can be accessible also through the FTP dissemination service. For list of variables available please see here.
How to migrate to CDS API on the Atmosphere Data Store (ADS)
The data remains also listed in ECMWF's public data catalogue. To access the data use the ECMWF Web API with ‘dataset’:'cams_nrealtime'. Please have a a look at the following link for Python CAMS real-time examples.
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