Graphics Digital Data
Pieter P. Tans and Thomas J. Conway
The sampling site at Grifton, North Carolina, is operated in cooperation with the WITN Television. The NOAA/CMDL flask data from Grifton show an increase in the annual mixing ratio from 359.31 parts per million (ppm) in 1993 to 370.36 ppm in 1998.
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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