NOTICE (September 2017): Data previously stored at the CDIAC archive are being transitioned to the new, ESS-DIVE archive. This website provides access to the CDIAC data during the transition. If you have any questions regarding the new archive or the data transition, please contact

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Atmospheric CO2 Records from Sites in the UBA Air Sampling Network

Umweltbundesamt Monitoring Sites

Map showing location of the Umweltbundesamt monitoring sites