气候变化领域集成服务门户(CCPortal): Carbon accounting for negative emissions technologies

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DOI	10.1080/14693062.2021.1878009
	Carbon accounting for negative emissions technologies
	Brander M.; Ascui F.; Scott V.; Tett S.
发表日期	2021
ISSN	1469-3062
起始页码	179
结束页码	198
卷号	21 期号:5
英文摘要	Negative emissions technologies (NETs) are an essential part of most scenarios for achieving the Paris Agreement goal of limiting warming to below 2°C and for all scenarios that limit warming to 1.5 °C. The deployment of these technologies requires carbon accounting methods for a range of different purposes, such as determining the effectiveness of specific technologies or incentivising NETs. Although the need for carbon accounting methods is discussed within the literature on NETs, there does not appear to be a clear understanding of the range of different accounting challenges. Based on a systematic literature review this study identifies five distinct accounting issues related to NETs: 1. estimating total system-wide change in emissions/removals; 2. non-permanence; 3. non-equivalence of ‘no overshoot’ and ‘overshoot and removal’; 4. accounting for incentives for NETs; and 5. the temporal distribution of emissions/removals. Solutions to these accounting challenges are proposed, or alternatively, areas for further research and the development of solutions are highlighted. One key recommendation is that carbon accounting methods should follow a ‘reality principle’ to report emissions and removals when and where they actually occur, and an important overall conclusion is that it is essential to use the correct accounting method for its appropriate purpose. For example, consequential methods that take account of total system-wide changes in emissions/removals should be used if the purpose is to inform decisions on the deployment or incentivisation of NETs. Attributional methods, however, should be used if the purpose is to construct static descriptions of possible net zero worlds. Key policy insights Negative emissions technologies (NETs) raise a number of distinct carbon accounting challenges, the importance of which varies across different NETs. Attributional life cycle assessment is not an appropriate method for estimating the system-wide changes caused by the deployment of NETs. Consequential greenhouse gas accounting methods should be used to estimate system-wide changes, and should be used as much as possible for guiding incentives for NETs. Greenhouse gas accounting methods should follow a ‘reality principle’ to report emissions and removals when and where they actually occur. © 2021 Informa UK Limited, trading as Taylor & Francis Group.
英文关键词	BECCS; carbon accounting; consequential LCA; greenhouse gas removal; negative emissions technologies; NETS
来源期刊	CLIMATE POLICY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/183656
作者单位	University of Edinburgh Business School, Edinburgh, United Kingdom; University of Edinburgh School of Geosciences, Edinburgh, United Kingdom
推荐引用方式 GB/T 7714	Brander M.,Ascui F.,Scott V.,et al. Carbon accounting for negative emissions technologies[J],2021,21(5).
APA	Brander M.,Ascui F.,Scott V.,&Tett S..(2021).Carbon accounting for negative emissions technologies.CLIMATE POLICY,21(5).
MLA	Brander M.,et al."Carbon accounting for negative emissions technologies".CLIMATE POLICY 21.5(2021).