Figure 1: Atmospheric CO2 concentrations as observed at Mauna Loa from 
1958 to 2008 (black dashed line) and projected under the 6 SRES marker and 
illustrative scenarios. Two carbon cycle models (see Box 3.7 in IPCC, 2001) 
are used for each scenario: BERN (solid lines) and ISAM (dashed).