Global Average Temperature at Earth's Surface and Atmospheric
Concentrations of Carbon Dioxide, 1950-2001
Year	Temperature	Carbon Dioxide
	(degrees Celsius)	(parts per million)
1760		276.72	(at the start of the Industrial Revolution)
1950	13.83	311.26
1951	13.97	311.74
1952	14.04	312.22
1953	14.11	312.70
1954	13.91	313.22
1955	13.91	313.73
1956	13.83	314.25
1957	14.09	314.77
1958	14.09	315.28
1959	14.04	316.00
1960	13.98	316.91
1961	14.10	317.63
1962	14.05	318.47
1963	14.04	319.02
1964	13.76	319.52
1965	13.86	320.09
1966	13.93	321.34
1967	13.99	322.12
1968	13.90	323.11
1969	14.00	324.60
1970	14.05	325.65
1971	13.90	326.32
1972	13.95	327.51
1973	14.18	329.61
1974	13.94	330.29
1975	13.98	331.16
1976	13.78	332.18
1977	14.15	333.88
1978	14.07	335.52
1979	14.12	336.89
1980	14.27	338.67
1981	14.40	339.95
1982	14.09	341.09
1983	14.34	342.75
1984	14.16	344.44
1985	14.13	345.87
1986	14.18	347.14
1987	14.34	348.99
1988	14.42	351.44
1989	14.28	352.94
1990	14.49	354.19
1991	14.44	355.62
1992	14.16	356.36
1993	14.18	357.10
1994	14.31	358.86
1995	14.45	360.90
1996	14.34	362.58
1997	14.38	363.84
1998	14.68	366.58
1999	14.41	368.28
2000	14.39	369.39
2001	14.51	370.88
Source: Goddard Institute for Space Studies,  NASA Goddard Space Flight Center
Earth Sciences Directorate, "Global Temperature Anomalies in .01 C,"
<http://www.giss.nasa.gov/data>, updated November 2001;
C.D. Keeling, T.P. Whorf, and the Carbon Dioxide Research Group,
"Atmospheric Carbon Dioxide Record from Mauna Loa,"
Scripps Institution of Oceanography, University of California,
<http://cdiac.esd.ornl.gov/trends/trends.htm>, 13 August 2001,
and personal correspondence, 5 December 2001.