General Patterns of Projected Climate Change

This section reviews general patterns of climate change as projected by the IPCC Fourth Assessment Report (AR4). The purpose is to provide a general template of regional patterns of climate impacts at subcontinental scales, over which to lay the generalities just described for the three scenarios. Unless otherwise indicated, the results described in this section are extracted from chapters 10 and 11, Contribution of Working Group I to the Fourth Assessment Report, which present projections of future climate change based on modeling experiments using mostly aggregated results of up to twenty-one different global climate models.34 Changes are presented as averages of all the models used in an analysis.

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