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*** Atmospheric CO2 concentrations from Amsterdam Island   (September 1996) ***
***                                                                         ***
*** Source: A. Gaudry                                                       ***
***         V. Kazan                                                        ***
***         P. Monfray                                                      ***
***         Centre des Faibles Radioactivites                               ***
***         Laboratoire de Modelisation du Climat et de l'Environnement     *** 
***         Centre d'Etudes de Saclay                                       ***
***         Batiment 709, Orme des Merisiers                                ***
***         91191-Gif-sur-Yvette Cedex, France                              ***
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Year  Jan.   Feb.   Mar.   Apr.   May    Jun.   Jul.   Aug.   Sep.   Oct.   Nov.   Dec.   Ann.
1980 -99.99 -99.99 -99.99 -99.99 337.3  337.5  337.7  337.8  337.8  337.8  337.8  338.0  337.7
1981 338.4  338.4  338.3  338.3  338.5  338.2  338.4  339.0  338.7  338.8  338.9  339.1  338.6
1982 339.2  339.3  339.4  339.2  339.0  339.1  339.2  340.0  339.9  339.7  339.7  339.6  339.4
1983 340.0  340.3  340.3  340.6  340.8  341.1  341.8  341.9  341.9  341.8  341.8  342.2  341.2
1984 341.9  341.6  341.7  341.7  341.6  341.9  342.0  342.6  343.2  342.8  342.7  342.7  342.2
1985 343.6  343.7  343.5  343.6  343.4  343.5  343.8  344.2  344.2  344.2  344.1  344.2  343.8
1986 344.4  344.6  344.7  344.3  344.4  344.7  345.1  345.6  345.6  345.8  345.8  346.7  345.1
1987 346.2  346.3  346.1  346.1  346.4  346.8  347.2  347.6  347.7  347.9  348.0  348.6  347.1
1988 349.2  348.5  348.3  348.2  348.4  348.6  349.5  350.1  349.5  350.5  350.0  350.0  349.2
1989 350.2  350.1  349.9  350.0  349.9  350.1  350.7  351.0  351.1  351.0  350.7  351.4  350.5
1990 351.2  351.5  351.2  351.2  351.5  351.7  352.0  352.4  352.4  352.6  352.7  352.9  351.9
1991 352.8  352.7  352.9  352.9  352.8  352.9  353.4  353.6  353.4  353.4  353.4  353.3  353.2
1992 353.7  353.6  353.6  353.6  353.7  354.2  354.6  354.9  354.9  354.8  354.5  354.7  354.2
1993 354.1  354.1  354.9  354.4  354.3  354.8  355.3  355.6  355.7  355.7  355.6  355.5  355.0
1994 355.6  355.6  355.4  355.2  355.1  356.1  356.5  356.9  357.1  357.1  357.4  357.6  356.3
1995 357.7  357.8  357.6  357.3  357.5  358.1  358.4  359.4  359.1  359.1  359.3  359.2  358.4

Atmospheric concentrations of CO2 are expressed in parts per million by volume (ppmv) and
reported in the 1993 SIO manometric mole fraction scale.  Missing values are denoted by -99.99.

For additional information please see http://cdiac.esd.ornl.gov/trends_html/trends/co2 or
contact Tom Boden at the Carbon Dioxide Information Analysis Center (tab@ornl.gov or 423-241-4842).