Figure 14: Global mean surface
air temperature anomalies from 1,000 year control simulations with three different
climate models, – Hadley, Geophysical Fluid Dynamics Laboratory and Hamburg,
compared to the recent instrumental record. No model control simulation shows
a trend in surface air temperature as large as the observed trend. If internal
variability is correct in these models, the recent warming is likely not due to
variability produced within the climate system alone. [Based on Figure
12.1]
