NOTICE (July 2017): CDIAC will cease operations on September 30, 2017. Data will continue to be available through this portal until that time. A new DOE data archive is now at Lawrence Berkeley National Laboratory and is named ESS-DIVE. Data stored at CDIAC is being transitioned to ESS-DIVE and will be available from ESS-DIVE by September 30, 2017. If you have any questions regarding the new archive or the data transition, please contact ess-dive-support@lbl.gov.

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Atmospheric CO2 Records from Sites in the Main Geophysical Observatory Air Sampling Network

Main Geophysical Observatory monitoring sites

Map showing location of the Main Geophysical Observatory air sampling network sites