Image:Mauna Loa Carbon Dioxide.png

From Global Warming Art

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Description

History of carbon dioxide concentrations during the last 250 years and a comparison of the rate of increase to the rate at which fossil fuels are being consumed.

This figure shows the history of atmospheric carbon dioxide concentrations as directly measured at Mauna Loa, Hawaii. This curve is known as the Keeling curve, and is an essential piece of evidence of the man-made increases in greenhouse gases that are believed to be the cause of global warming. The longest such record exists at Mauna Loa, but these measurements have been independently confirmed at many other sites around the world [1].

The annual fluctuation in carbon dioxide is caused by seasonal variations in carbon dioxide uptake by land plants. Since many more forests are concentrated in the Northern Hemisphere than the Southern Hemisphere, more carbon dioxide is removed from the atmosphere during Northern Hemisphere summer than during Southern Hemisphere summer. This annual cycle is shown in the inset figure by taking the average concentration for each month across all measured years. This cycle is sometimes referred to as the "breathing" of the Earth.

The red curve shows the average monthly concentrations, and blue curve is a moving 12 month average.

• See also: Carbon dioxide emissions scenarios through 2100.

Copyright

This figure was created by Robert A. Rohde from published data.

Global Warming Art License

This image is an original work created for Global Warming Art by Robert A. Rohde.

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Images and pages linking to this file

• Carbon Dioxide Gallery
• Image:Carbon History and Flux Rev.png
• List of all images
• Thumbnail gallery of all images
• What's New/Archive 1
• Image:Carbon Dioxide Molecule VdW.png
• List of greenhouse gas images
• List of carbon dioxide images
• What's New

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• 03:52, 4 February 2009 . . 800×549 (35,978 bytes)
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• 09:02, 2 July 2006 . . 600×410 (25,040 bytes)