Monthly Atmospheric CO2 Records from Sites in the SIO Air Sampling Network

The air sampling network used by the Scripps Institution of Oceanography (SIO) to determine atmospheric levels of carbon dioxide (CO2) consist of ten sites. Sampling frequency and longevity varies by site. At some sites air samples are collected continuously while at others evacuated glass flasks are used to collect air samples for subsequent analysis at SIO. This database offers monthly and annual CO2 values from ten sites representative of background tropospheric conditions.