Atmospheric carbon dioxide records from sites in the NOAA/CMDL air sampling network

BARROW

Trends

The NOAA/CMDL flask data from Point Barrow show an increase in the annual atmospheric CO mixing ratio from 330.3 parts per million (ppm) in 1972 to 357.6 ppm in 1992, or 1.37 ppm per year. Conway et al. (1994) reported a global growth rate of 1.43 ppm per year during 1981-92 for all NOAA/CMDL flask-sampling sites. Atmospheric CO mixing ratios at Point Barrow show a seasonal pattern with the annual drawdown occurring in August and the annual maximum occurring in March-May. Conway et al. (1994) found that the average peak-to-peak amplitude for Point Barrow was 16.7 ppm for 1981-92.

Barrow, Alaska, U.S.A.
Arctic coastal seashore
71°19' N, 156°36' W
11 m above MSL

Barrow Graph

Monthly atmospheric CO mixing ratios at Barrow.

Barrow Table

CO mixing ratios at Barrow (ppm)

Access to Digital Data

Bermuda (East) Trends

References

Methods

CITE AS: Conway, T.J., P.P. Tans, and L.S. Waterman. 1994. Atmospheric CO records from sites in the NOAA/CMDL air sampling network. In T.A. Boden, D.P. Kaiser, R.J. Sepanski, and F.W. Stoss (eds.), Trends '93: A Compendium of Data on Global Change. ORNL/CDIAC-65. Carbon Dioxide Information Analysis Center, Oak Ridge National Laboratory, U.S. Department of Energy, Oak Ridge, Tenn., U.S.A.

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Date revised 4/10/95 (gg)