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Table 1 Equilibrium climate sensitivity (ECS), and concentration ( β ) and climate ( γ ) carbon cycle feedback strengths

From: Modeling in Earth system science up to and beyond IPCC AR5

  EMICs (8 models) CMIP5 ESMs (15 models for ECS, 9 models for others)
ECS (K) 3.04 ± 0.67 3.37 ± 0.83
β L (PgC/ppm) 0.69 ± 0.31 0.92 ± 0.44
β o (PgC/ppm) 0.93 ± 0.19 0.80 ± 0.07
γ L (PgC/K) −61.5 ± 29.7 −58.4 ± 28.5
γ o (PgC/K) −9.6 ± 6.7 −7.8 ± 2.9
  1. These parameters were estimated by EMICs and ESMs. Variables were obtained from Eby et al. ([2013]) for EMICs and from Andrews et al. ([2012]) and Arora et al. ([2013]) for ESMs. L, land; O, ocean.