Graphics Digital Data
Pieter P. Tans and Thomas J. Conway
The NOAA/CMDL flask data from Point Barrow show an increase in the annual atmospheric CO2 mixing ratio from 330.27 parts per million (ppm) in 1972 to 374.35 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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