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1. Latest three days of Real-Time CAMS global daily analysis and forecast data are atmospheric composition forecasts are available through:
   1. the ADS interactive web interface download forms: CAMS global atmospheric composition forecasts
   2. CDS API allowing users to download Global CAMS data in a programmatic way
   3. the FTP dissemination service
2. CAMS Global archived analysis and forecast daily data (6 hourly analysis and 3 hourly up-to 5 days forecast data since 05/07/2012, available with a 5-day delay, approximately 40km horizontal resolution (T511 spectral) on 60 vertical levels from the surface up to 0.1 hPa; increased to 137 levels on 09/07/2019 onwards as part of the IFS cycle 46r1 upgrade - see  Implementation of IFS cycle 46r1  for details).  These data are available for download through:
   1. ADS interactive web interface download forms: CAMS global atmospheric composition forecasts
   2. CDS API allowing users to download Global CAMS data in a programmatic way.
3. CAMS Global reanalysis data (EAC4) (3-hourly and monthly), 2003-June 2021August 2024, releases twice a year with 6 month delay, approximately 80 km (T255 spectral) on 60 vertical levels from the surface up to 0.1 hPa for the analysed species) are available for download through: 
   
   1. ADS interactive web interface download forms: CAMS global reanalysis (EAC4) 3-hourly data and CAMS global reanalysis (EAC4) monthly averaged fields
   2. CDS API allowing users to download Global CAMS data in a programmatic way.

See What are the changes from the MACC Reanalysis to the CAMS interim Reanalysis, to the CAMS Reanalysis?