CAMS global and regional forecast data are availble to download from the CAMS Atmosphere Data Store (ADS) at https://ads.atmosphere.copernicus.eu/cdsapp#!/home. Registration is required and can be done following the link on the ADS homepage.
All CAMS data can be accessed from the ECMWF CAMS catalogue. To access and download CAMS data from the catalogue you will need to create an account at https://www.ecmwf.int, if you don't already have one.
It is recommended to login at www.ecmwf.int to access the data catalogue.
The following links can be used to access CAMS data: