Challenge

Annual global mean temperature from 1940 - 2080

The black lines in the image below show the mean temperature averaged over the entire globe for each year. Each black line represent one of the runs 32 - 62. The red line is the mean of the 31 runs together. The blue line shows the observed (estimated) annual global mean temperature from 1940-2002 ( source CRU with offset 13.8 degrees to overlay model curves with observed).

During the actual simulations the black and the red lines in the image showed the situation at at most 1 hour ago.

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Michael Kliphuis