Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1088/1748-9326/ab4df4 |
Guidance on emissions metrics for nationally determined contributions under the Paris Agreement | |
Denison, Steve; Forster, Piers M.; Smith, Christopher J. | |
2019-12-01 | |
发表期刊 | ENVIRONMENTAL RESEARCH LETTERS
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ISSN | 1748-9326 |
出版年 | 2019 |
卷号 | 14期号:12 |
文章类型 | Article |
语种 | 英语 |
国家 | England |
英文摘要 | Many nationally determined contributions (NDCs) under the Paris Agreement follow the established practice of specifying emissions levels in tonnes of CO2 equivalent emissions. The Global Warming Potential (GWP) is the emissions metric used most often to aggregate contributions from different greenhouse gases (GHGs). However, the climate impact of pathways expressed in this way is known to be ambiguous. For this reason, alternatives have been proposed but the ambiguity has not been quantified in the context of the Paris Agreement. Here we assess the variation in temperature using pathways consistent with the ambition of limiting temperature increases to well below 2 C. These are taken from the IPCC Special Report on Global Warming of 1.5 C (SR15). The CO2 emission levels are adjusted so that the pathways all have the same total CO2 equivalent emissions for a given emissions metric but have different proportions of short-lived and long-lived pollutants. We show that this difference affects projections by up to 0.17 C when GWP(100) is used. Options of reducing this ambiguity include using a different emissions metric or adding supplementary information in NDCs about the emissions levels of individual GHGs. We suggest the latter on the grounds of simplicity and because it does not require agreement on the use of a different emissions metric. |
英文关键词 | NDC metric GWP(100) Paris Agreement 2C 1 5C IPCC SR15 |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000501296500001 |
WOS关键词 | IMPULSE-RESPONSE ; CLIMATE ; MODEL |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/224711 |
专题 | 环境与发展全球科技态势 |
作者单位 | Univ Leeds, Sch Earth & Environm, Leeds LS2 9JT, W Yorkshire, England |
推荐引用方式 GB/T 7714 | Denison, Steve,Forster, Piers M.,Smith, Christopher J.. Guidance on emissions metrics for nationally determined contributions under the Paris Agreement[J]. ENVIRONMENTAL RESEARCH LETTERS,2019,14(12). |
APA | Denison, Steve,Forster, Piers M.,&Smith, Christopher J..(2019).Guidance on emissions metrics for nationally determined contributions under the Paris Agreement.ENVIRONMENTAL RESEARCH LETTERS,14(12). |
MLA | Denison, Steve,et al."Guidance on emissions metrics for nationally determined contributions under the Paris Agreement".ENVIRONMENTAL RESEARCH LETTERS 14.12(2019). |
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