Most of the world’s fossil fuel reserves will need to stay in the ground if dangerous global warming is to be avoided, modelling work suggests. Over 80% of coal, 50% of gas and 30% of oil reserves are "unburnable" under the goal to limit global warming to no more than 2C. UCL research rules out drilling in the Arctic.
And it points to heavy restrictions on coal to limit temperature rises. "We’ve now got tangible figures of the quantities and locations of fossil fuels that should remain unused in trying to keep within the 2C temperature limit," said lead researcher Dr Christophe McGlade, of the UCL Institute for Sustainable Resources.
"Policy makers must realise that their instincts to completely use the fossil fuels within their countries are wholly incompatible with their commitments to the 2C goal." Past research has found that burning all of the world’s fossil fuel resources would release three times more carbon than that required to keep warming to no more than 2C. The new study uses models to estimate how much coal, oil and gas must go unburned up to 2050 and where it can be extracted to stay within the 2C target regarded as the threshold for dangerous climate change.