Monthly atmospheric CO2 record from Easter Island, Chile

Graphics Digital Data

Pieter P. Tans and Thomas J. Conway

NOAA Climate Monitoring and Diagnostics Laboratory, Boulder, Colorado 80305, U.S.A.

Period of Record


Easter Island, Chile
27°15' S, 109°45' W
50 m above MSL


The sampling site at Easter Island, Chile, is operated in cooperation with the Direccion Meteorologica de Chile. The NOAA/CMDL flask data from Easter Island show an increase in the annual value from 355.72 parts per million (ppm) in 1994 to 370.43 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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