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Increase of CO2 since pre-industrial times 1800 - Oct 2011 http://t.co/T010lq3D #ppm #carbon #globalwarming #climate #change #green #eco
– Josef Biesenberger (jbiesenberger) http://twitter.com/jbiesenberger/status/125488698904150016
This page shows the current ppm of CO2 in the atmosphere.
The calculated figure uses estimates of the level of carbon dioxide (CO2 - the main greenhouse gas) based on actual measurements taken monthly a worldwide network of stations and collated by the Earth Systems Research Laboratory (ESRL) in Boulder, Colorado. The record of CO2 concentrations available from ESRL stretches back over 50 years.
You have likely seen the number 350 pop up when talking about carbon emissions. The number is key to survival of the planet - it represents the level of carbon dioxide in the atmosphere that is safe to have if we expect life to continue to thrive.
As author and activist Bill McKibben noted during Earth Month, top scientist James Hansen and his NASA team have stated that anything above 350 parts per million "is not compatible with the planet 'on which civilization developed and to which life is adapted.'" In other words, we need to be under that number, or else. Right now, we're well above it at 387 parts per million, and that's a problem.
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