Chart 1.2

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Atmospheric carbon dioxide concentrations, 1010 to 2004
Atmospheric carbon dioxide concentrations, 1010 to 2004
Note(s):  Pre-1975 data taken from Etheridge et al, 1998. Post-1975 data taken from Keeling and Whorf, 2005.
Source(s):  Etheridge, D.M., L.P. Steele, R.L. Langenfelds, R.J. Francey, J.-M. Barnola and V.I. Morgan, 1998, Historical CO2 records from the Law Dome DE08, DE08-2, and DSS ice cores, (accessed March 4, 2008). Keeling, C.D. and T.P. Whorf, 2005, Atmospheric carbon dioxide records from the South Pole, (accessed March 4, 2008).
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