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Diagnostic indicators for integrated assessment models of climate policy

Elmar Kriegler, Nils Petermann, Volker Krey, Valeria Jana Schwanitz, Gunnar Luderer, Shuichi Ashina, Valentina Bosetti (), Jiyong Eom, Alban Kitous, Aurélie Méjean, Leonidas Paroussos (), Fuminori Sano, Hal Turton, Charlie Wilson and Detlef P. Van Vuuren
Additional contact information
Volker Krey: IIASA - International Institute for Applied Systems Analysis [Laxenburg]
Gunnar Luderer: PIK - Potsdam Institute for Climate Impact Research
Hal Turton: PSI - Paul Scherrer Institute
Detlef P. Van Vuuren: PBL Netherlands Environmental Assessment Agency, Utrecht University [Utrecht]

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Abstract: Integrated assessments of how climate policy interacts with energy-economy systems can be performed by a variety of models with different functional structures. In order to provide insights into why results differ between models, this article proposes a diagnostic scheme that can be applied to a wide range of models. Diagnostics can uncover patterns of model behavior and indicate how results differ between model types. Such insights are informative since model behavior can have a significant impact on projections of climate change mitigation costs and other policy-relevant information. The authors propose diagnostic indicators to characterize model responses to carbon price signals and test these in a diagnostic study of 11 global models. Indicators describe the magnitude of emission abatement and the associated costs relative to a harmonized baseline, the relative changes in carbon intensity and energy intensity, and the extent of transformation in the energy system. This study shows a correlation among indicators suggesting that models can be classified into groups based on common patterns of behavior in response to carbon pricing. Such a classification can help to explain variations among policy-relevant model results.

Keywords: Climate policy; Integrated assessment models; Energy system models; Model diagnostics; Climate change economics (search for similar items in EconPapers)
Date: 2015-01-01
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Published in Technological Forecasting and Social Change, Elsevier, 2015, 90 (A), pp.45-61. ⟨10.1016/j.techfore.2013.09.020⟩

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DOI: 10.1016/j.techfore.2013.09.020

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