Narrowing Uncertainty of Projections of the Global Economy-Climate System Dynamics via Mutually Compatible Integration within Multi-Model Ensembles

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WP-16-015.pdf

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WP-16-015.pdf

http://eprints.org/relation/isVersionOf https://pure.iiasa.ac.at/id/document/76702 http://eprints.org/relation/isVolatileVersionOf https://pure.iiasa.ac.at/id/document/76702 http://eprints.org/relation/isCoversheetVersionOf https://pure.iiasa.ac.at/id/document/76702 archive 353 disk0/00/01/44/70 2017-03-14 08:33:53 2021-08-27 17:28:43 2017-03-14 08:33:53 monograph show 1 Kovalevskiy D. Shchiptsova A. 2049 Rovenskaya E. 8206 0000-0002-2761-3443 Hasselmann K. Pavel Kabat, Director General and CEO, IIASA Narrowing Uncertainty of Projections of the Global Economy-Climate System Dynamics via Mutually Compatible Integration within Multi-Model Ensembles pub prog_asa Any model used to derive projections of future climate or assess its impact constitutes a particular simplification of reality. To date, no model building process can guarantee full “objectivity” in the choice of model assumptions and parameterization. In this connection, researchers have introduced a number of stylized integrated assessment models, which attempt to represent the full time-dynamic non-linear causal loop between accumulated emissions, economy and climate, yet in a aggregated, simplified fashion to enable extensive uncertainty analysis with respect to both structural and parametric uncertainty. In this work, we put forward a simplified system dynamics integrated assessment model which simulates the global economic growth, corresponding emissions, global warming and caused by its secondary effects economic losses. While generally our model follows the same logic as DICE and other models of this kind, it pays more attention to the mechanism of the emission reduction. Mitigation is assumed to be done through the allocation of a certain fraction of the total output into enhancing carbon and energy efficiency. The model enables exploring effects of mitigation scenarios defined via carbon tax. We explore the structural sensitivity by examining five alternative climate sensitivity functions and use the "mutual compatibility integration" approach to synthesize the information from the five alternative model versions. 2016-09 published WP-16-015 280 260 public working_paper IIASA, Laxenburg, Austria Knowledge Based Climate Mitigation Systems for a Low Carbon Economy (COMPLEX, FP7 308601) FALSE yes info:eu-repo/grantAgreement/EC/FP7/308601/EU/Knowledge Based Climate Mitigation Systems for a Low Carbon Economy/COMPLEX info:eu-repo/semantics/book info:eu-repo/semantics/openAccess