Proof Point
Global carbon dioxide released in atmosphere increased to 405.25 ppm in December 2016 from 378.21 ppm in January 2005
Global Carbon Dioxide Atmospheric Level
January 2005 – December 2016 (parts per million (ppm))
Proof Point Findings
- Carbon Dioxide Atmospheric Level – Concentration of carbon dioxide, a heat-trapping type of greenhouse gas, released into atmosphere and measured in parts per million
- December 2016 Level – Global carbon dioxide levels rose from 378.21 ppm in January 2005 to 405.25 ppm in December 2016
- 400 PPM Threshold – Reached 400 ppm threshold in 2015 and has not dropped since then
- Key Drivers – Include human activities (e.g. fossil fuel burning and deforestation), and natural phenomena, like biological respiration and volcanic eruption
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Date Last Updated |
August 28, 2017
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