Sanderson, Benjamin M.; et al. (2016): What would it take to achieve the Paris temperature targets?
Sanderson, Benjamin M.; O'Neill, Brian C.; Tebaldi, Claudia (2016): What would it take to achieve the Paris temperature targets? In Geophys. Res. Lett. DOI 10.1002/2016GL069563
Including negative emissions. "We propose a set of idealized emission pathways consistent with the targets. If countries reduce emissions in line with their INDCs, the 2°C threshold could be avoided only if net zero greenhouse gas emissions (GHGEs) are achieved by 2085 and late century negative emissions are considerably in excess of those assumed in Representative Concentration Pathway (RCP) 2.6 (net −5 Gt CO2/yr, compared with −1.5 Gt CO2/yr in RCP2.6). More aggressive near-term reductions would allow 2°C to be avoided with less end-of-century carbon removal capacity."