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arXiv · 2212.12060

emIAM v1.0: an emulator for Integrated Assessment Models using marginal abatement cost curves

Weiwei Xiong·Katsumasa Tanaka·Philippe Ciais·Daniel J. A. Johansson·Mariliis Lehtveer
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Abstract

We developed an emulator for Integrated Assessment Models (emIAM) based on a marginal abatement cost (MAC) curve approach. Using the output of IAMs in the ENGAGE Scenario Explorer and the GET model, we derived a large set of MAC curves: ten IAMs; global and eleven regions; three gases CO2, CH4, and N2O; eight portfolios of available mitigation technologies; and two emission sources. We tested the performance of emIAM by coupling it with a simple climate model ACC2. We found that the optimizing climate-economy model emIAM-ACC2 adequately reproduced a majority of original IAM emission outcomes under similar conditions, allowing systematic explorations of IAMs with small computational resources. emIAM can expand the capability of simple climate models as a tool to calculate cost-effective pathways linked directly to a temperature target.

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Weiwei Xiong, Katsumasa Tanaka, Philippe Ciais, Daniel J. A. Johansson, Mariliis Lehtveer. 2022-12-22. emIAM v1.0: an emulator for Integrated Assessment Models using marginal abatement cost curves. https://arxiv.org/abs/2212.12060

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