Atmospheric greenhouse gas concentrations

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Atmospheric greenhouse gas concentrations commonly refers to the six main greenhouse gases which are included in the Kyoto Protocol.

The main greenhouse gas is carbon dioxide, which in 2008 reached a global average of 384.9 parts per million (ppm) in the atmosphere, up 2.2 ppm on 2007 according to the U.S. National Oceanic and Atmospheric Administration (NOAA) .[1]

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References

  1. Gerard Wynn, "CO2 Rise In Atmosphere Accelerates In 2008", Reuters, February 26, 2009.

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