Changing Content of Carbon Dioxide in the Earth's Atmosphere
| Figure 7a-1: The following graph illustrates the rise in atmospheric carbon dioxide from 1744 to 2005. Note that the increase in carbon dioxide's concentration in the atmosphere has been exponential during the period examined. An extrapolation into the immediate future would suggest continued increases. |
Siple Station Ice Core Data
Source: Neftel, A., H. Friedli,
E. Moore, H. Lotscher, H. Oeschger, U. Siegenthaler,
and B. Stauffer. 1994. Historical carbon dioxide record
from the Siple Station ice core. pp. 11-14. 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, Oak Ridge, Tenn. U.S.A.
Mauna Loa Data
Source: Keeling, C.D. and T.P. Whorf. 2006. Atmospheric CO2 records from sites in the SIO air sampling network. In Trends: A Compendium of Data on Global Change. Carbon Dioxide Information Analysis Center, Oak Ridge National Laboratory, U.S. Department of Energy, Oak Ridge, Tenn., U.S.A.