Not exact matches
Fig. 1 (b) shows that the anomaly between observations and the
CMIP5 mean temperature response to
cumulative emissions is halved by repeating the Millar analysis with the GISTEMP product instead of HadCRUT.
Millar et al. wrote the confusing sentence: «in the mean
CMIP5 response
cumulative emissions do not reach 545GtC until after 2020, by which time the
CMIP5 ensemble - mean human - induced warming is over 0.3 °C warmer than the central estimate for human - induced warming to 2015».
In order to estimate the
cumulative CO2
emissions for use in calculating the carbon budget, ESMs within
CMIP5 had to back - calculate
emissions based on the atmospheric concentrations using the carbon cycle within each model.