Authors
Marielle Saunois, Ann R Stavert, Ben Poulter, Philippe Bousquet, Joseph G Canadell, Robert B Jackson, Peter A Raymond, Edward J Dlugokencky, Sander Houweling, Prabir K Patra, Philippe Ciais, Vivek K Arora, David Bastviken, Peter Bergamaschi, Donald R Blake, Gordon Brailsford, Lori Bruhwiler, Kimberly M Carlson, Mark Carrol, Simona Castaldi, Naveen Chandra, Cyril Crevoisier, Patrick M Crill, Kristofer Covey, Charles L Curry, Giuseppe Etiope, Christian Frankenberg, Nicola Gedney, Michaela I Hegglin, Lena Höglund-Isaksson, Gustaf Hugelius, Misa Ishizawa, Akihiko Ito, Greet Janssens-Maenhout, Katherine M Jensen, Fortunat Joos, Thomas Kleinen, Paul B Krummel, Ray L Langenfelds, Goulven G Laruelle, Licheng Liu, Toshinobu Machida, Shamil Maksyutov, Kyle C McDonald, Joe McNorton, Paul A Miller, Joe R Melton, Isamu Morino, Jureck Müller, Fabiola Murgia-Flores, Vaishali Naik, Yosuke Niwa, Sergio Noce, Simon O'Doherty, Robert J Parker, Changhui Peng, Shushi Peng, Glen P Peters, Catherine Prigent, Ronald Prinn, Michel Ramonet, Pierre Regnier, William J Riley, Judith A Rosentreter, Arjo Segers, Isobel J Simpson, Hao Shi, Steven J Smith, L Paul Steele, Brett F Thornton, Hanqin Tian, Yasunori Tohjima, Francesco N Tubiello, Aki Tsuruta, Nicolas Viovy, Apostolos Voulgarakis, Thomas S Weber, Michiel Van Weele, Guido R Van Der Werf, Ray F Weiss, Doug Worthy, Debra Wunch, Yi Yin, Yukio Yoshida, Wenxin Zhang, Zhen Zhang, Yuanhong Zhao, Bo Zheng, Qing Zhu, Qiuan Zhu, Qianlai Zhuang
Publication date
2019/8/19
Source
Earth System Science Data Discussions
Volume
2019
Pages
1-136
Description
Understanding and quantifying the global methane (CH4) budget is important for assessing realistic pathways to mitigate climate change. Atmospheric emissions and concentrations of CH4 are continuing to increase, making CH4 the second most important human-influenced greenhouse gas in terms of climate forcing, after carbon dioxide (CO2). Assessing the relative importance of CH4 in comparison to CO2 is complicated by its shorter atmospheric lifetime, stronger warming potential, and atmospheric growth rate variations over the past decade, the causes of which are still debated. Two major difficulties in reducing uncertainties arise from the variety of geographically overlapping CH4 sources and from the destruction of CH4 by short-lived hydroxyl radicals (OH). To address these difficulties, we have established a consortium of multi-disciplinary scientists under the umbrella of the Global Carbon Project to synthesize and stimulate new research aimed at improving and regularly updating the global methane budget. Following Saunois et al. (2016), we present here the second version of the living review paper dedicated to the decadal methane budget, integrating results of top-down studies (atmospheric observations within an atmospheric inverse-modelling framework) and bottom-up estimates (including process-based models for estimating land surface emissions and atmospheric chemistry, inventories of anthropogenic emissions, and data-driven extrapolations).
For the 2008–2017 decade, global methane emissions are estimated by atmospheric inversions (top-down approach) to be 572 Tg CH4 yr−1 (range 538–593, corresponding to …
Scholar articles
M Saunois, AR Stavert, B Poulter, P Bousquet… - Earth System Science Data Discussions, 2019