Monthly atmospheric CO2 record from Cold Bay, Alaska, 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


Cold Bay, Alaska, U.S.A.
Treeless peninsula
55°20' N, 162°72' W
25 m above MSL


The sampling site at Cold Bay, Alaska, is operated in cooperation with the U.S. National Weather Service. The NOAA/CMDL flask data from Cold Bay show an increase in the annual atmospheric CO2 mixing ratio from 337.82 parts per million (ppm) in 1979 to 373.86 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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