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|
Atmospheric
Concentrations of Carbon Dioxide, 1950-2001
|
|
|
| Year |
Carbon
Dioxide
|
|
(parts
per million)
|
|
|
1760
(at the start of the Industrial Revolution) |
276.72
|
| ... |
...
|
| 1950 |
311.26
|
| 1951 |
311.74
|
| 1952 |
312.22
|
| 1953 |
312.70
|
| 1954 |
313.22
|
| 1955 |
313.73
|
| 1956 |
314.25
|
| 1957 |
314.77
|
| 1958 |
315.28
|
| 1959 |
316.00
|
| 1960 |
316.91
|
| 1961 |
317.63
|
| 1962 |
318.47
|
| 1963 |
319.02
|
| 1964 |
319.52
|
| 1965 |
320.09
|
| 1966 |
321.34
|
| 1967 |
322.12
|
| 1968 |
323.11
|
| 1969 |
324.60
|
| 1970 |
325.65
|
| 1971 |
326.32
|
| 1972 |
327.51
|
| 1973 |
329.61
|
| 1974 |
330.29
|
| 1975 |
331.16
|
| 1976 |
332.18
|
| 1977 |
333.88
|
| 1978 |
335.52
|
| 1979 |
336.89
|
| 1980 |
338.67
|
| 1981 |
339.95
|
| 1982 |
341.09
|
| 1983 |
342.75
|
| 1984 |
344.44
|
| 1985 |
345.87
|
| 1986 |
347.14
|
| 1987 |
348.99
|
| 1988 |
351.44
|
| 1989 |
352.94
|
| 1990 |
354.19
|
| 1991 |
355.62
|
| 1992 |
356.36
|
| 1993 |
357.10
|
| 1994 |
358.86
|
| 1995 |
360.90
|
| 1996 |
362.58
|
| 1997 |
363.84
|
| 1998 |
366.58
|
| 1999 |
368.28
|
| 2000 |
369.39
|
| 2001 |
370.89
|
|
|
| Source:
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 June 2002. |
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