Monthly atmospheric CO2 record from Grifton, North Carolina, U.S.A.

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


Grifton, North Carolina, U.S.A.
35°35' N, 77°38' W
505 m above MSL


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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