Graphics Digital Data
Pieter P. Tans and Thomas J. Conway
The NOAA/CMDL sampling site in the Azores is located on Terceira Islands and is operated in cooperation with the Instituto Nacional de Meteorologia e Geofisica. The NOAA/CMDL flask data from the Azores show an increase in the annual mixing ratio from 339.13 parts per million (ppm) in 1980 to 373.64 ppm in 2002.
CITE AS: Tans, Pieter P. and T.J. Conway, 2005. Monthly Atmospheric CO2 Mixing Ratios from the NOAA CMDL Carbon Cycle Cooperative Global Air Sampling Network, 1968-2002. In Trends: A Compendium of Data on Global Change. Carbon Dioxide Information Analysis Center, Oak Ridge National Laboratory, U.S. Department of Energy, Oak Ridge, Tenn., U.S.A.
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