(Results dynamically generated 11-22-09 0:03:13)

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Climate and Atmosphere — Global Gas Concentrations: CO2 Units: Parts per million

Reverse years

		1744	1764	1791	1816	1839	1843	1847	1854	1869	1874	1878	1887	1899	1903	1905	1909	1915	1921	1927	1935	1943	1953	1959	1960	1961	1962	1963	1965	1966	1967	1968	1969	1970	1971	1972	1973	1974	1975	1976	1977	1978	1979	1980	1981	1982	1983	1984	1985	1986	1987	1988	1989	1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007	2008
World
World {1}		276.80	276.70	279.70	283.80	283.10	287.40	286.80	288.20	289.30	289.50	290.30	292.30	295.80	294.80	296.90	299.20	300.50	301.60	305.50	306.60	307.90	312.70	315.98	316.91	317.64	318.45	318.99	320.04	321.38	322.16	323.05	324.63	325.68	326.32	327.45	329.68	330.25	331.15	332.15	333.90	335.51	336.85	338.69	339.93	341.13	342.78	344.42	345.90	347.15	348.93	351.48	352.91	354.19	355.59	356.37	357.04	358.89	360.88	362.64	363.76	366.63	368.31	369.48	371.02	373.10	375.64	377.38	379.67	381.84	383.55	385.34

Footnotes

1 - World

Data after 1958 are from Mauna Loa Observatory Data before 1958 are from the Siple Ice Core.

Source

Data before 1958: Neftel, Friedli, Moore et al. 1994. Historical Carbon Dioxide Record from the Siple Station Ice Core (reported on-line by the Carbon Dioxide Information Analysis Center at http://cdiac.esd.ornl.gov/ftp/trends/co2/siple2.013). Bern, Switzerland: University of Bern. Data after 1958: Keeling, C.D., Whorf, T.P., and the Scripps Institute of Oceanography. 2005. Atmospheric CO2 Concentrations (ppmv) derived from in-situ air samples collected at Mauna Loa Observatory, Hawaii (reported on-line by the Carbon Dioxide Information Analysis Center at http://cdiac.ornl.gov/ftp/trends/co2/maunaloa.co2. Mauna Loa: Scripps Institute of Oceanography.