[2204.04029] CO2 Removal And 1.5°C: What, When, Where, And How?

Physics > Physics and Society arXiv:2204.04029 (physics) [Submitted on 8 Apr 2022] Title:CO2 removal and 1.5°C: what, when, where, and how? Authors:Solene Chiquier, Mathilde Fajardy, Niall Mac Dowell View a PDF of the paper titled CO2 removal and 1.5{\deg}C: what, when, where, and how?, by Solene Chiquier and 1 other authors View PDF

Abstract:The international community aims to limit global warming to 1.5°C, but little progress has been made towards a global, cost-efficient, and fair climate mitigation plan to deploy carbon dioxide removal (CDR) at the Paris Agreement's scale. Here, we investigate how different CDR options - AR, BECCS, and DACCS - might be deployed to meet the Paris Agreement's CDR objectives. We find that international cooperation in climate mitigation policy is key for deploying the most cost-efficient CDR pathway - comprised of BECCS, mainly (74%), and AR (26%) -, allowing to take the most advantage of regional bio-geophysical resources and socio-economic factors, and time variations, and therefore minimising costs. Importantly, with international cooperation, the spatio-temporal evolution of the CDR pathway differs greatly from the socio-economically fair regional allocation of the Paris Agreement's CDR objectives. With limited, or no international cooperation, we find that the likelihood of delivering these CDR objectives decreases, as deploying CDR pathways becomes significantly more challenging and costly - particularly when leading to the deployment of DACCS. Moreover, we show that developing international cooperation policy instruments - such as an international market for negative emissions trading - can deliver, simultaneously, cost-efficient and equitable CDR at the Paris Agreement's scale, by incentivising participating nations to meet their share of the Paris Agreement's CDR objectives, whilst making up for the uneven distribution of CDR potentials across the world. Crucially, we conclude that international cooperation is imperative, as soon as possible, to preserve the feasibility and sustainability of future CDR pathways, and ensure that future generations do not bear the burden, increasingly costlier, of climate mitigation inaction.

Comments:	main: 12 pages + 4 appendix (total number of pages: 39)
Subjects:	Physics and Society (physics.soc-ph)
Cite as:	arXiv:2204.04029 [physics.soc-ph]
(or arXiv:2204.04029v1 [physics.soc-ph] for this version)
https://doi.org/10.48550/arXiv.2204.04029 Focus to learn more arXiv-issued DOI via DataCite

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From: Solene Chiquier [view email] [v1] Fri, 8 Apr 2022 12:35:12 UTC (9,695 KB) Full-text links:

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