气候变化领域集成服务门户(CCPortal): Inconsistencies when applying novel metrics for emissions accounting to the Paris agreement

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DOI	10.1088/1748-9326/ab56e7
	Inconsistencies when applying novel metrics for emissions accounting to the Paris agreement
	Schleussner C.-F.; Nauels A.; Schaeffer M.; Hare W.; Rogelj J.
发表日期	2019
ISSN	17489318
卷号	14 期号:12
英文摘要	Addressing emissions of non-CO2 greenhouse gases (GHGs) is an integral part of efficient climate change mitigation and therefore an essential part of climate policy. Metrics are used to aggregate and compare emissions of short- A nd long-lived GHGs and need to account for the difference in both magnitude and persistence of their climatic effects. Different metrics describe different approaches and perspectives, and hence yield different numerical estimates for aggregated GHG emissions. When interpreting GHG emission reduction targets, being mindful of the underlying metrical choices thus proves to be essential. Here we present the impact a recently proposed GHG metric related to the concept of CO2 forcing-equivalent emissions (called GWP∗) would have on the internal consistency and environmental integrity of the Paris Agreement. We show that interpreting the Paris Agreement goals in a metric like GWP∗ that is significantly different from the standard metric used in the IPCC Fifth Assessment Report can lead to profound inconsistencies in the mitigation architecture of the Agreement. It could even undermine the integrity of the Agreement's mitigation target altogether by failing to deliver net-zero CO2 emissions and therewith failing to ensure warming is halted. Our results indicate that great care needs to be taken when applying new concepts that appear scientifically favourable to a pre-existing climate policy context. © 2019 The Author(s). Published by IOP Publishing Ltd.
英文关键词	Global warming potentials; Net-zero; Paris agreement
语种	英语
scopus关键词	Carbon dioxide; Emission control; Global warming; Climate change mitigation; Climate policy; Climatic effects; CO2 emissions; Environmental integrity; Global warming potential; Internal consistency; Net-zero; Greenhouse gases; carbon dioxide; climate change; environmental policy; global warming; greenhouse gas; magnitude; persistence
来源期刊	Environmental Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/154271
作者单位	Climate Analytics, Berlin, Germany; Integrative Research Institute on Transformations of Human-Environment Systems (IRI THESys), Humboldt-Universität zu Berlin, Berlin, Germany; Potsdam Institute for Climate Impact Research, Potsdam, Germany; Australian-German Climate and Energy College, University of Melbourne, Melbourne, Australia; Grantham Institute, Imperial College London, London, United Kingdom; International Institute for Applied Systems Analysis (IIASA), Laxenburg, Austria; Institute for Atmospheric and Climate Science, Eth Zurich, Universitätstrasse 16, Zurich, 8006, Switzerland
推荐引用方式 GB/T 7714	Schleussner C.-F.,Nauels A.,Schaeffer M.,et al. Inconsistencies when applying novel metrics for emissions accounting to the Paris agreement[J],2019,14(12).
APA	Schleussner C.-F.,Nauels A.,Schaeffer M.,Hare W.,&Rogelj J..(2019).Inconsistencies when applying novel metrics for emissions accounting to the Paris agreement.Environmental Research Letters,14(12).
MLA	Schleussner C.-F.,et al."Inconsistencies when applying novel metrics for emissions accounting to the Paris agreement".Environmental Research Letters 14.12(2019).