Carbon dioxide in our atmosphere is monitored because it is the major factor in the warming of the world's climate. The amount of CO2 in the air has been rising for decades. This year it is consistently measuring over 400 parts per million (ppm), highest content in modern times.
350 ppm is considered by many scientists to be the threshold of dangerous climate change effects.
Measurements of carbon dioxide in the atmosphere are made by two independent CO2 monitoring programs, the National Oceanic and Atmospheric Administration and the Scripps Institution of Oceanography at the University of California at San Diego. The date are collected at the Mauna Loa Observatory in Hawaii, about 3,400 metres above sea level.
For more information go to scripps.ucsd.edu/programs/keelingcurve/
* Why do I post this information? Because a warming world means significant changes for birds, not to mention us. (Art taken from Scripps web page.)
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