Pieter P. Tans and Thomas J. Conway
1979-2002

The sampling site on Ascension Island is operated in cooperation with the U.S. Air Force and Computer Science Raytheon. The NOAA/CMDL flask data from Ascension Island show an increase in the annual value from 338.83 parts per million (ppm) in 1980 to 371.75 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.
NOAA CMDL monthly CO2 records | Trends Contents | CDIAC Home
3/2005