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DOI | 10.1088/1748-9326/aab89c |
Increased importance of methane reduction for a 1.5 degree target | |
Collins, William J.1; Webber, Christopher P.1; Cox, Peter M.2; Huntingford, Chris3; Lowe, Jason4,5; Sitch, Stephen2; Chadburn, Sarah E.2,5; Comyn-Platt, Edward3; Harper, Anna B.2; Hayman, Garry3; Powell, Tom2 | |
2018-05-01 | |
发表期刊 | ENVIRONMENTAL RESEARCH LETTERS
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ISSN | 1748-9326 |
出版年 | 2018 |
卷号 | 13期号:5 |
文章类型 | Article |
语种 | 英语 |
国家 | England |
英文摘要 | To understand the importance of methane on the levels of carbon emission reductions required to achieve temperature goals, a processed-based approach is necessary rather than reliance on the transient climate response to emissions. We show that plausible levels of methane (CH4) mitigation can make a substantial difference to the feasibility of achieving the Paris climate targets through increasing the allowable carbon emissions. This benefit is enhanced by the indirect effects of CH4 on ozone (O-3). Here the differing effects of CH4 and CO2 on land carbon storage, including the effects of surface O-3, lead to an additional increase in the allowable carbon emissions with CH4 mitigation. We find a simple robust relationship between the change in the 2100 CH4 concentration and the extra allowable cumulative carbon emissions between now and 2100 (0.27 +/- 0.05 GtC per ppb CH4). This relationship is independent of modelled climate sensitivity and precise temperature target, although later mitigation of CH4 reduces its value and thus methane reduction effectiveness. Up to 12% of this increase in allowable emissions is due to the effect of surface ozone. We conclude early mitigation of CH4 emissions would significantly increase the feasibility of stabilising global warming below 1.5 degrees C, alongside having co-benefits for human and ecosystem health. |
英文关键词 | carbon budgets methane mitigation non-CO2 greenhouse gases climate targets |
领域 | 气候变化 |
收录类别 | SCI-E ; SSCI |
WOS记录号 | WOS:000430627500003 |
WOS关键词 | CO2 EMISSIONS ; CARBON-CYCLE ; AIR-QUALITY ; DEGREES-C ; CLIMATE ; MODELS ; POLLUTANTS ; SCENARIOS ; IMPACTS ; GASES |
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/34350 |
专题 | 气候变化 |
作者单位 | 1.Univ Reading, Reading RG6 6BB, Berks, England; 2.Univ Exeter, Exeter EX4 4QF, Devon, England; 3.Ctr Ecol & Hydrol, Wallingford OX10 8BB, Oxon, England; 4.Met Off Hadley Ctr, Fitzroy Rd, Exeter EX1 3PB, Devon, England; 5.Univ Leeds, Leeds LS2 9JT, W Yorkshire, England |
推荐引用方式 GB/T 7714 | Collins, William J.,Webber, Christopher P.,Cox, Peter M.,et al. Increased importance of methane reduction for a 1.5 degree target[J]. ENVIRONMENTAL RESEARCH LETTERS,2018,13(5). |
APA | Collins, William J..,Webber, Christopher P..,Cox, Peter M..,Huntingford, Chris.,Lowe, Jason.,...&Powell, Tom.(2018).Increased importance of methane reduction for a 1.5 degree target.ENVIRONMENTAL RESEARCH LETTERS,13(5). |
MLA | Collins, William J.,et al."Increased importance of methane reduction for a 1.5 degree target".ENVIRONMENTAL RESEARCH LETTERS 13.5(2018). |
条目包含的文件 | 条目无相关文件。 |
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