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

SYOWA STATION

Trends

The sampling site at Syowa is operated in cooperation with the Japanese Antarctic Research Expedition and the National Institute for Polar Research. The first NOAA/CMDL flask air samples from Syowa were collected in 1986. The annual atmospheric CO₂ mixing ratio at Syowa rose from 349.3 parts per million (ppm) in 1988 to 354.2 ppm in 1992, or 1.23 ppm per year.

Atmospheric CO₂ mixing ratios at this Antarctic site show a seasonal pattern: the annual drawdown typically occurs in January-April, and the annual buildup occurs in September-December. As in the CO₂ records from other Antarctic sites, the seasonal amplitude is quite small, no more than a few parts per million.

Syowa Station
Antarctica
69°00' S, 39°35' E
11 m above MSL

Syowa Station Graph

Monthly atmospheric CO₂ mixing ratios at Syowa Station.

Syowa Station Table

CO₂ mixing ratios at Syowa Station (ppm)

Access to Digital Data

Tae-ahn Peninsula Trends

References

Methods

CITE AS: Conway, T.J., P.P. Tans, and L.S. Waterman. 1994. Atmospheric CO₂ 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)