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This report examines adaptation and mitigation within an integrated framework. Global and regional costs of adaptation are assessed dynamically and the resulting benefits are quantified. This is accomplished by developing a framework to incorporate adaptation as a policy variable within three Integrated Assessment Models (IAMs); the global Dynamic Integrated model of Climate and the Economy (DICE), the Regional Integrated model of Climate and the Economy (RICE), and the World Induced Technical Change Hybrid (WITCH) model. The framework developed here takes into account investments in reactive adaptation and in adaptation "stocks", as well as investments in building adaptive capacity. This report presents the first inter-model comparison of results on adaptation costs using the emerging category of adaptation-IAMs. Results show that least-cost policy response to climate change will need to involve subsantial amounts of mitigation efforts, investments in adaptation stock, reactive adaptation measures and adaptive capacity to limit the remaining damages.

The International Research Institute for Climate Prediction (IRI) was created in 1996 with an “end-to-end” mission to engage in climate research and modeling on a seasonal-to-interannual time scale and to provide the results of this research in a useful way to farmers, fishermen, public health officials, and others capable of making the best of the predicted climate conditions. As a boundary organization, IRI straddles the divides between the production and use of research and between the developed world and the developing world. This article describes the institutional history of IRI, examining how the end-to-end mission evolved over time, how it is becoming institutionalized in IRI as a boundary organization, and the ongoing challenges it presents to managing the boundary between climate variability research and societal applications.