气候变化领域集成服务门户(CCPortal): Air quality co-benefits of ratcheting up the NDCs

CCPortal

DOI	10.1007/s10584-020-02699-1
	Air quality co-benefits of ratcheting up the NDCs
	Rauner S.; Hilaire J.; Klein D.; Strefler J.; Luderer G.
发表日期	2020
ISSN	0165-0009
英文摘要	The current nationally determined contributions, pledged by the countries under the Paris Agreement, are far from limiting climate change to below 2 ∘C temperature increase by the end of the century. The necessary ratcheting up of climate policy is projected to come with a wide array of additional benefits, in particular a reduction of today’s 4.5 million annual premature deaths due to poor air quality. This paper therefore addresses the question how climate policy and air pollution–related health impacts interplay until 2050 by developing a comprehensive global modeling framework along the cause and effect chain of air pollution–induced social costs. We find that ratcheting up climate policy to a 2 ∘ compliant pathway results in welfare benefits through reduced air pollution that are larger than mitigation costs, even with avoided climate change damages neglected. The regional analysis demonstrates that the 2 ∘C pathway is therefore, from a social cost perspective, a “no-regret option” in the global aggregate, but in particular for China and India due to high air quality benefits, and also for developed regions due to net negative mitigation costs. Energy and resource exporting regions, on the other hand, face higher mitigation cost than benefits. Our analysis further shows that the result of higher health benefits than mitigation costs is robust across various air pollution control scenarios. However, although climate mitigation results in substantial air pollution emission reductions overall, we find significant remaining emissions in the transport and industry sectors even in a 2 ∘C world. We therefore call for further research in how to optimally exploit climate policy and air pollution control, deriving climate change mitigation pathways that maximize co-benefits. © 2020, The Author(s).
英文关键词	Air pollution; Climate change; Co-benefits; Health impacts
语种	英语
scopus关键词	Air quality; Atmospheric movements; Cost benefit analysis; Emission control; Quality control; Regional planning; Cause and effects; Climate change mitigation; Climate mitigations; Developed regions; Industry sectors; Pollution emissions; Regional analysis; Temperature increase; Climate change
来源期刊	Climatic Change
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/147324
作者单位	Potsdam Institute for Climate Impact Research (PIK), Member of the Leibniz Association, P.O. Box 60 12 03, Potsdam, D-14412, Germany; Mercator Research Institute on Global Commons and Climate Change (MCC) gGmbH, EUREF Campus 19, Torgauer Str. 12-15, Berlin, D-10829, Germany
推荐引用方式 GB/T 7714	Rauner S.,Hilaire J.,Klein D.,et al. Air quality co-benefits of ratcheting up the NDCs[J],2020.
APA	Rauner S.,Hilaire J.,Klein D.,Strefler J.,&Luderer G..(2020).Air quality co-benefits of ratcheting up the NDCs.Climatic Change.
MLA	Rauner S.,et al."Air quality co-benefits of ratcheting up the NDCs".Climatic Change (2020).