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. 2007 Jun 4;104(24):9949–9954. doi: 10.1073/pnas.0700419104

Table 1.

Description of model runs

Model run Description
A2 Observed CO2 concentrations followed by Special Report on Emissions Scenarios A2 CO2 emissions
GEO A2 with geoengineering implemented at 2000
ON_2025 A2 with geoengineering implemented at 2025
ON_2050 A2 with geoengineering implemented at 2050
ON_2075 A2 with geoengineering implemented at 2075
OFF_2025 GEO with geoengineering failure at 2025
OFF_2050 GEO with geoengineering failure at 2050
OFF_2075 GEO with geoengineering failure at 2075
A2+CS A2 with doubled climate sensitivity after 2005
GEO+CS GEO with doubled climate sensitivity after 2005
OFF_2050+CS OFF_2050 with doubled climate sensitivity after 2005