Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.15901 |
Regional trends and drivers of the global methane budget | |
Ann R. Stavert; Marielle Saunois; Josep G. Canadell; Benjamin Poulter; Robert B. Jackson; Pierre Regnier; Ronny Lauerwald; Peter A. Raymond; George H. Allen; Prabir K. Patra; Peter Bergamaschi; Phillipe Bousquet; Naveen Chandra; Philippe Ciais; Adrian Gustafson; Misa Ishizawa; Akihiko Ito; Thomas Kleinen; Shamil Maksyutov; Joe McNorton; Joe R. Melton; Jurek Mü; ller; Yosuke Niwa; Shushi Peng; William J. Riley; Arjo Segers; Hanqin Tian; Aki Tsuruta; Yi Yin; Zhen Zhang; Bo Zheng; Qianlai Zhuang | |
2021-10-27 | |
发表期刊 | Global Change Biology |
出版年 | 2021 |
英文摘要 | The ongoing development of the Global Carbon Project (GCP) global methane (CH4) budget shows a continuation of increasing CH4 emissions and CH4 accumulation in the atmosphere during 2000–2017. Here, we decompose the global budget into 19 regions (18 land and 1 oceanic) and five key source sectors to spatially attribute the observed global trends. A comparison of top-down (TD) (atmospheric and transport model-based) and bottom-up (BU) (inventory- and process model-based) CH4 emission estimates demonstrates robust temporal trends with CH4 emissions increasing in 16 of the 19 regions. Five regions—China, Southeast Asia, USA, South Asia, and Brazil—account for >40% of the global total emissions (their anthropogenic and natural sources together totaling >270 Tg CH4 yr−1 in 2008–2017). Two of these regions, China and South Asia, emit predominantly anthropogenic emissions (>75%) and together emit more than 25% of global anthropogenic emissions. China and the Middle East show the largest increases in total emission rates over the 2000 to 2017 period with regional emissions increasing by >20%. In contrast, Europe and Korea and Japan show a steady decline in CH4 emission rates, with total emissions decreasing by ~10% between 2000 and 2017. Coal mining, waste (predominantly solid waste disposal) and livestock (especially enteric fermentation) are dominant drivers of observed emissions increases while declines appear driven by a combination of waste and fossil emission reductions. As such, together these sectors present the greatest risks of further increasing the atmospheric CH4 burden and the greatest opportunities for greenhouse gas abatement. |
领域 | 气候变化 ; 资源环境 |
URL | 查看原文 |
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/341099 |
专题 | 气候变化 资源环境科学 |
推荐引用方式 GB/T 7714 | Ann R. Stavert,Marielle Saunois,Josep G. Canadell,et al. Regional trends and drivers of the global methane budget[J]. Global Change Biology,2021. |
APA | Ann R. Stavert.,Marielle Saunois.,Josep G. Canadell.,Benjamin Poulter.,Robert B. Jackson.,...&Qianlai Zhuang.(2021).Regional trends and drivers of the global methane budget.Global Change Biology. |
MLA | Ann R. Stavert,et al."Regional trends and drivers of the global methane budget".Global Change Biology (2021). |
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