Publications

Joeri Rogelj, Julia Nabel, Claudine Chen, William Hare, Kathleen Markmann, Malte Meinshausen,Michiel Schaeffer, Kirsten Macey, Niklas Höhne.Nature, Vol. 464, p. 1126-1128.Current national emissions targets can't limit global warming to 2 °C, calculate Joeri Rogelj, Malte Meinshausen and colleagues — they might even lock the world into exceeding 3 °C warming.Full read more...

Globally business as usual emissions for 2020 of 57 GtCO2e are projected. To have a good chance at limiting global warming to 2°C or 1.5°C, 2020 emissions would need to be below 44 and 40 GtCO2e respectively. Hence the Copenhagen Climate Deal needs reductions of around 13-17 GtCO2e by 2020.