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Encyclopedia > Keeling Curve

The Keeling Curve is a graph measuring the increase in the levels of carbon dioxide in the atmosphere since 1958. Measurements taken atop Mauna Loa in Hawaii by Dr. Charles David Keeling show an increase of CO2 in that time span from about 315.0 parts per million by volume to 367 ppmv by the year 2000. The graph shows a cyclical increase and decrease within each year, corresponding to the seasonal change in uptake of CO2 by the world's vegetation. The Keeling Curve has most notably been interpreted as a signal of possible global warming. Carbon dioxide is an atmospheric gas composed of one carbon and two oxygen atoms. ... Mauna Loa is an active shield volcano in the Hawaiian Islands, one of five volcanic peaks that together form the Island of Hawaii. ... State nickname: The Aloha State Other U.S. States Capital Honolulu Largest city Honolulu Governor Linda Lingle Official languages Hawaiian and English Area 28,337 km² (43rd)  - Land 16,649 km²  - Water 11,672 km² (41. ... Global mean surface temperatures 1856-2004 Global warming is a term used to describe an increase over time of the average temperature of Earths atmosphere and oceans. ...


Sources:


http://earthguide.ucsd.edu/globalchange/keeling_curve/01.html http://cdrg.ucsd.edu/keeling_curve.html


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:: SCRIPPSNEWS : SCRIPPS GLOBAL CLIMATE CHANGE PIONEER TO RECEIVE TYLER PRIZE (862 words)
Keeling, a world leader in research on the carbon cycle and the increase of carbon dioxide (CO) in the atmosphere, known to influence the greenhouse effect, has been affiliated with Scripps since 1956.
Keeling also has studied the role of oceans in modulating the atmospheric concentration of carbon dioxide by carrying out extremely accurate measurements of carbon dissolved in seawater.
In 1996, Keeling, with his colleagues at Scripps, showed that the amplitude of the Northern Hemispheric seasonal cycles in atmospheric carbon dioxide has been increasing, providing independent support for the conclusion that the growing season is beginning earlier, perhaps in response to global warming.
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