Dangerously beyond 350: CO2 above 400 ppm for most of 2015

Categories: Big picture
Published on: January 14, 2015

Robert Scribbler / 13 January 2015

CO2 vs PETM sRate of carbon emission at more than 30 billion tons of CO2 each year vs the PETM — which was the most recent hothouse extinction 55 million years ago. It’s enough to push an atmospheric temperature rise on the scale of a mass extinction over the course of decades rather than millenia. It’s also worth noting that with CO2 emissions at 36 gigatons in 2013 and CO2e emissions just shy of 50 gigatons this trajectory is even steeper than the graph depicts. [Note that WeatherUnderground has erroneously labeled CO2 as Carbon in the graph]