Atmospheric carbon dioxide records from sites in the NOAA/CMDL air
sampling network
AMSTERDAM ISLAND
Trends
The sampling site on Amsterdam Island is operated in cooperation
with the French Centre des Faibles Radioactivités. Except during
the summer (December?February), when this island is within the wind
regime of the westerlies, the monthly mean mixing ratios from
Amsterdam Island can be considered representative of the background
subantarctic atmosphere (Gaudry et al. 1983).
The NOAA flask data from Amsterdam Island show an increase in the
annual value from 341.1 parts per million (ppm) in 1983 to
350.5 ppm in 1989 or 1.6 ppm per year. Conway et al. (1994)
reported a global growth rate of 1.43 ppm per year for
1981-92 for all NOAA/CMDL flask-sampling sites.
Ascencio-Parvy et al. (1983) found a 0.11 ppm-per-month increase in
atmospheric CO
concentrations at Amsterdam Island from
October 1980 to November 1983. Both Conway et al. (1988) and
Ascencio-Parvy et al. (1984) found considerable variability within
each year and suggested that the growth rate minimum in 1982 and
the growth rate maximum in 1983 may result partly from the 1982-83
El Niño event.
Amsterdam Island, Indian Ocean
Island seashore
37°52' S, 77°32' E
150 m above MSL
Amsterdam Island Graph
Monthly atmospheric CO mixing ratios at Amsterdam Island.
Amsterdam Island Table
CO mixing ratios at Amsterdam Island (ppm)
Access to Digital Data
Ascension Island 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.
Previous Section Next Section Contents CDIAC Home
Date revised 4/10/95 (gg)
