Figure 1. Comparison between global mean surface temperature anomalies (¡C) from observations (thick black line) and AOGCM simulations forced with (a) both anthropogenic and natural forcing and (b) natural forcing only (thick gray line).
Source: IPCC (2007) Climate Change 2007 - The Physical Science Basis, Cambridge: Cambridge University Press. Figure 9.5 in Working Group I Contribution to the Fourth Assessment Report of the IPCC, Chapter 9: ÒUnderstanding and Attributing Climate Change,Ó p. 684.
