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Human Activity and the Environment: Annual Statistics
2007 and 2008
Chart 1.2
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, http://cdiac.ornl.gov/trends/co2/lawdome.html (accessed March 4, 2008).
Keeling, C.D. and T.P. Whorf, 2005, Atmospheric carbon dioxide records
from the South Pole, http://cdiac.ornl.gov/trends/co2/sio-spl.htm (accessed March 4, 2008).
