NOTICE (March 2018): This website provides access to the CDIAC archive data temporarily. It will be gradually transitioned into data packages in the new ESS-DIVE archive. This site will continue to operate in parallel during and after the transition, and will be retired at a future date. If you have any questions regarding the data or the transition, please contact ess-dive-support@lbl.gov.

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Atmospheric Trace Gases » CO2 »  Main Air Sampling Network

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