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Table 8 Main global characteristics of the IPCC A1b and B2 baseline scenarios (derived from The IMAGE Team [59]).

From: Quantifying the effectiveness of climate change mitigation through forest plantations and carbon sequestration with an integrated land-use model

Variable Year A1b B2
Population 2020 7.6 7.7
(109 people) 2050 8.7 9.4
(in 2000: 6.1) 2100 7.1 10.4
GDP/capita 2020 8.8 7.6
(103 US $ yr-1) 2050 24.2 13.7
(in 2000: 5.3) 2100 86.2 27.7
Extent arable land 2020 51.7 53.1
(Mkm2) 2050 53.1 53.6
(in 2000: 48.5) 2100 48.4 51.0
Atmospheric CO2 2020 426 421
Concentration (ppm) 2050 561 506
(in 2000: 375) 2100 753 606
Air temperature change (°C) (in 2000: 0.6) 2020 1.0 1.0
  2050 2.0 1.9
  2100 3.4 2.9