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Environmental Carbon dioxide
May 25 , 2019
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- On May 11, global concentration of carbon dioxide in the atmosphere crossed the 415 parts per million (ppm) mark for the first time.
- It was measured by sensors at the Mauna Loa observatory in Hawaii.
- In 1958 the carbon dioxide concentrations were around 315 ppm at the same place.
- The rapidly rising concentration of carbon dioxide in the atmosphere is one of the best indicators of global warming.
Why is it dangerous?
- Carbon dioxide has a very long lifespan in the atmosphere, between 100 and 300 years.
- The carbon dioxide concentration level corresponding to a 2ºC rise in global temperatures is generally understood to be 450 ppm.
- At current rates of growth, this level would be reached in less than 12 years (by 2030 itself)
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