The concluded Conference of the Parties (COP) in Katowice, and its background papers and declarations. confirmed that IPCC consensus driven science has been far too conservative in its projections, and that the UNFCCC COP process - while necessary in the absence of alternatives - has increasingly served to falsely assuage fears and placate the coal, oil, gas and nuclear lobbies.
The aim cannot be to limit temperature increase to 'below 2 C degrees' - the target must be 0 degree warming. The catastropic Arctic meltdown and heatwaves were triggered already at 0.8 C degree warming over preindustrial levels. This means the aim must be below-zero emission reductions by reaching full renewable energy supply as soon as possible while regenerating biospheric capacities to absorb the mounting bubble of excess atmospheric greenhouse gases above 280 ppm CO2.