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Chapter 10: Integrated Assessment Models – the Interplay of Climate Change, Agriculture and Land Use in a Policy Tool
Marian Leimbach, Alexander Popp, Hermann Lotze-Campen, Nico Bauer, Jan Philipp Dietrich and David Klein
Marian Leimbach, Alexander Popp, Hermann Lotze-Campen, Nico Bauer, Jan Philipp Dietrich and David Klein INTEGRATED ASSESSMENT MODELING Integrated assessment (IA) models have become a common tool for assessing strategies to cope with climate change. They describe the complex relations between environmental, social and economic factors that determine future climate change and the effectiveness of climate policy, in order to derive policy-relevant insights (e.g. Schneider, 1997; Hope, 2005). Working Group III of the Second Assessment Report by the Intergovernmental Panel on Climate Change (IPCC) acknowledged the rising importance of IA models by devoting a chapter to them, including a survey by Weyant et al. (1996). We begin the chapter describing the interplay of climate change and land-use activities in IA models with a brief overview on the history of IA modeling, followed by a discussion of common characteristics of and differences between IA models, as well as their application as a policy tool. We conclude this introductory section by providing an outline of a typical IA model structure, and focusing the land-use module as the main subject of further investigation by putting it into the center. History With increasing indication of anthropogenic causation of global warming, the integrated assessment of climate change became a fast-expanding field of scientific interest and policy relevance at the end of the 1980s. The generally recognized intricate features of climate change and the emerging need for policy response have triggered substantial research activities over the past two decades. Initial efforts by a handful of research groups...
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