If current coal reserves are burned on a time scale short compared to time scales for carbon storage, then CO2 concentrations will go over 400 ppm rather easily. (realclimate.org)
Our results suggest that, globally, a third of oil reserves, half of gas reserves and over 80 per cent of current coal reserves should remain unused from 2010 to 2050 in order to meet the target of 2 °C. (altmetric.com)
Research published in Nature recommends that, globally, a third of oil reserves, half of gas reserves, and over 80 percent of current coal reserves should remain unused from 2010 to 2050, in order to keep average global temperatures from rising no more than two degrees Celsius above pre-industrial levels. (psmag.com)