International shipping in a world below 2°C
DOI10.5281/zenodo.10836455Zenodo10836455MaRDI QIDQ6698500
Dataset published at Zenodo repository.
Eduardo Müller-Casseres, Laurent Drouet, Harmen Sytze de Boer, Maarten van Den Berg, Nikolaos Tsanakas, Isabela S. Tagomori, Ioannis Tsiropoulos, Detlef van Vuuren, Panagiotis Fragkos, Olivier Dessens, Joana Portugal-Pereira, Hesam Naghash, Anastasis Giannousakis, Florian Leblanc, Pedro R. R. Rochedo, Thomas le Gallic, Rebecca Draeger, Johannes Emmerling, Roberto Schaeffer, Alexandre Szklo, Luiz Bernardo Baptista
Publication date: 19 March 2024
Copyright license: Creative Commons Attribution 4.0 International
The decarbonisation of shipping has become an important policy goal. While Integrated Assessment Models (IAMs) are often used to explore climate mitigation strategies, they typically provide little information on international shipping, which accounts for emissions of around 0.7 GtCO2/yr. Here we perform a multi-IAM analysis of international shipping and show the potential for decreasing annual emissions in the next decades, with reductions up to 86% by 2050. This is primarily achieved through the deployment of low-carbon fuels. Models that represent several potential low-carbon alternatives tend to show a deeper decarbonisation of international shipping, with drop-in biofuels, renewable alcohols and green ammonia standing out as the main substitutes of conventional maritime fuels. While our results align with the 2018 emissions reduction goal of the International Maritime Organization, their compatibility with the agencys revised target is still subject to a more definitive interpretation.
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