(Results dynamically generated 7-19-08 19:11:37)
Global Gas Concentrations: CO2
EarthTrends -> Climate and Atmosphere -> Variable -> Searchable Database Results
Climate and Atmosphere — Global Gas Concentrations: CO2
Units: Parts per million

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Reverse years
  20042003200220012000199919981997199619951994199319921991199019891988198719861985198419831982198119801979197819771976197519741973197219711970196919681967196619651964196319621961196019591953194319351927192119151909190519031899188718781874186918541847184318391816179117641744
World
World {1} 377.43375.61373.08371.04369.47368.30366.58363.84362.58360.90358.86357.10356.36355.62354.19352.94351.44348.99347.14345.86344.44342.75341.09339.95338.67336.89335.52333.88332.18331.16330.29329.61327.52326.32325.65324.60323.11322.13321.34320.09319.52319.02318.46317.63316.91316.00312.70307.90306.60305.50301.60300.50299.20296.90294.80295.80292.30290.30289.50289.30288.20286.80287.40283.10283.80279.70276.70276.80

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Footnotes
1 - World
  Data after 1959 are from Mauna Loa Observatory
  Data before 1953 are from the Siple Ice Core.

Source
Data before 1958: Neftel, Friedli, Moore et al. 1994. Historical Carbon Dioxide Record from the Siple Station Ice Core (reported on-line by the Carbon Dioxide Information Analysis Center at http://cdiac.esd.ornl.gov/ftp/trends/co2/siple2.013). Bern, Switzerland: University of Bern.

Data after 1958: Keeling, C.D., Whorf, T.P., and the Scripps Institute of Oceanography. 2005. Atmospheric CO2 Concentrations (ppmv) derived from in-situ air samples collected at Mauna Loa Observatory, Hawaii (reported on-line by the Carbon Dioxide Information Analysis Center at http://cdiac.ornl.gov/ftp/trends/co2/maunaloa.co2. Mauna Loa: Scripps Institute of Oceanography.


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