Climate Change 2001:
Working Group I: The Scientific Basis
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Figure 8.10: Illustration of the range of sea-ice extent in CMIP1 model simulations listed in Table 8.3: Northern Hemisphere, DJF (left) and Southern Hemisphere, JJA (right). For each model listed in Table 8.3, a 1/0 mask is produced to indicate presence or absence of ice. The fifteen masks were averaged for each hemisphere and season. The 0.5 contour therefore delineates the region for which at least half of the models produced sea ice. The 0.1 contour indicates the region outside of which only 10% of models produced ice, while the 0.9 contour indicates that region inside of which only 10% of models did not produce ice. The observed boundaries are based on GISST_2.2 (Rayner et al., 1996) averaged over 1961 to 1990.

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