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| View Original: | CO2-417k.png (1200x809) | |||
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| Keywords: CO2-417k.png Description Atmospheric carbon dioxide concentration during the past 417 000 years kya one thousand years ago; i e present is at zero right-hand side Carbon dioxide levels are expressed as parts per million volume The blue part of the curve comes from historical carbon dioxide records from ice cores drilled at the Vostok station in Antarctica The red part of the curve on the other hand illustrates the CO<sub><small>2</small></sub> increase to 380 ppm between 1800 and today due to anthropogenic emissions from fossil fuels This increase happened and happens on a time scale below the resolution and outside the time frame of the Vostok data The values are taken from other sources instead see Image CO2-Temp png and Image CO2-Mauna-Loa png Source graph drawn by Hanno using data published on the web by J -M Barnola D Raynaud C Lorius N I Barkov 2003 as Historical carbon dioxide record from the Vostok ice core 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 http //cdiac esd ornl gov/trends/co2/vostok htm Licence released into the public domain by the originator Co2 417k svg Global warming graphs Vostok Station | ||||
