Updated
12 October, 2003
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US
National Assessment of |
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Figure 6: Comparison of
the annual average changes in (a) global average surface air temperature
(F), and (b) average surface air temperature (oF) over the US from the Canadian
Model Scenario (black) and Hadley Model Scenario (red) simulations used
in the National Assessment and from the simulations of other modeling groups,
including a very recent result from the Hadley Centre model version 3 (dashed
red line), Germany's Max Planck Institute/German Climate Computing Center
(DKRZ) (lavender), NOAA's Geophysical Fluid Dynamics Laboratory (turquoise),
and from the Parallel Climate (green) and the Climate System (blue) models
at the National Center for Atmospheric Research, which actually used a slightly
lower greenhouse emission scenario and a significantly lower sulfate emissions
scenarios than the other models. Decadal means have been plotted to suppress
the natural variability of year-to-year conditions and the baseline period
is 1961-90. The anomalies are with respect to the year 2000, calculating
the values from a 2nd order polynomial fit.
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