Figure 9.10: The multi-model
ensemble annual mean change of the temperature (colour shading), its range (thin
blue isolines) (Unit: °C) and the multi-model mean change divided by the multi-model
standard deviation (solid green isolines, absolute values) for (a) the CMIP2 scenarios
at the time of CO2-doubling; (b) the IPCC-DDC scenario IS92a (G: greenhouse
gases only) for the years 2021 to 2050 relative to the period 1961 to 1990; (c)
the IPCC-DDC scenario IS92a (GS: greenhouse gases and sulphate aerosols) for the
years 2021 to 2050 relative to the period 1961 to 1990; (d) the SRES scenario
A2 and (e) the SRES scenario B2. Both SRES scenarios show the period 2071 to 2100
relative to the period 1961 to 1990. See text for scenario definitions and description
of analysis technique. In (b) and (d) the ratio mean change/standard deviation
is increasing towards the low latitudes as well as in (a), (c) and (e), while
the high latitudes around Antarctica show a minimum.
