Monthly atmospheric CO₂ record from Point Arena, California, 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

1999-2002

Point Arena, California, U.S.A.
38°95' N, 123°73' W
17 m above MSL

Trends

The sampling site at Point Arena, California, U.S.A. is operated in cooperation with the Point Arena Lighthouse Keepers, Inc. The NOAA/CMDL flask data from Point Arena show an increase in the annual mixing ratio from 370.89 parts per million (ppm) in 1999 to 376.94 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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3/2005