Development of an Integrated Model (AIM) to Assess Policy Options for Stabilizing Global Climate (Special Features on Environment)

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  • 地球温暖化対策の統合評価モデル(AIM)の開発(<小特集>環境)

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The Asian-Pacific Integrated Model (AIM) is a large-scale computer simulation model for assessing policy options to stabilize global climate, particularly in the Asian-Pacific region, from the two perspectives of reducing greenhouse emissions and avoiding the impacts of climate change. AIM is comprised of three linked models : an emission model, a climate model and an impact model. A major part of the emission model is the energy modules for estimating greenhouse gases (GHG) caused by fossil fuel combustions. In the modules, more than 100 technologies are evaluated for their potential to improve energy efficiency and for energy demand estimates at country level, and these are linked to a top-down economic model at global level. The climate model was created by developing original linkages to join several modules such as atmospheric reaction, ocean uptake, carbon cycle, radiative forcing and feedbacks for determining GHG concentrations and climatic changes. The impact model has a spatial water balance model, an ecological matching model, a food production model and a malaria distribution model, so that the increased risks of droughts, flood, vegetation changes, agricultural damages and molarias can be assessed.

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