Journal ArticleDOI
Estimating global natural wetland methane emissions using process modelling: spatio-temporal patterns and contributions to atmospheric methane fluctuations
Qiuan Zhu,Qiuan Zhu,Changhui Peng,Changhui Peng,Huai Chen,Huai Chen,Xiuqin Fang,Xiuqin Fang,Jinxun Liu,Hong Jiang,Yanzheng Yang,Gang Yang +11 more
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TLDR
In this paper, a process-based model integrated with full descriptions of methanogenesis (TRIPLEX-GHG) was used to simulate global wetland CH4 emissions.Abstract:
Aim
The fluctuations of atmospheric methane (CH4) that have occurred in recent decades are not fully understood, particularly with regard to the contribution from wetlands. The application of spatially explicit parameters has been suggested as an effective method for reducing uncertainties in bottom-up approaches to wetland CH4 emissions, but has not been included in recent studies. Our goal was to estimate spatio-temporal patterns of global wetland CH4 emissions using a process model and then to identify the contribution of wetland emissions to atmospheric CH4 fluctuations.
Location
Global.
Methods
A process-based model integrated with full descriptions of methanogenesis (TRIPLEX-GHG) was used to simulate global wetland CH4 emissions.
Results
Global annual wetland CH4 emissions ranged from 209 to 245 Tg CH4 year−1 between 1901 and 2012, with peaks occurring in 1991 and 2012. There is a decreasing trend between 1990 and 2010 with a rate of approximately 0.48 Tg CH4 year−1, which was largely caused by emissions from tropical wetlands showing a decreasing trend of 0.44 Tg CH4 year−1 since the 1970s. Emissions from tropical, temperate and high-latitude wetlands comprised 59, 26 and 15% of global emissions, respectively.
Main conclusion
Global wetland CH4 emissions, the interannual variability of which was primary controlled by tropical wetlands, partially drive the atmospheric CH4 burden. The stable to decreasing trend in wetland CH4 emissions, a result of a balance of emissions from tropical and extratropical wetlands, was a particular factor in slowing the atmospheric CH4 growth rate during the 1990s. The rapid decrease in tropical wetland CH4 emissions that began in 2000 was supposed to offset the increase in anthropogenic emissions and resulted in a relatively stable level of atmospheric CH4 from 2000 to 2006. Increasing wetland CH4 emissions, particularly after 2010, should be an important contributor to the growth in atmospheric CH4 seen since 2007.read more
Citations
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Journal ArticleDOI
The global methane budget 2000–2017
Marielle Saunois,Ann R. Stavert,Ben Poulter,Philippe Bousquet,Josep G. Canadell,Robert B. Jackson,Peter A. Raymond,Edward J. Dlugokencky,Sander Houweling,Sander Houweling,Prabir K. Patra,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 R. Covey,Charles L. Curry,Giuseppe Etiope,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 Gildas Laruelle,Licheng Liu,Toshinobu Machida,Shamil Maksyutov,Kyle C. McDonald,Joe McNorton,Paul A. Miller,Joe R. Melton,Isamu Morino,Jurek Müller,Fabiola Murguia-Flores,Vaishali Naik,Yosuke Niwa,Sergio Noce,Simon O'Doherty,Robert J. Parker,Changhui Peng,Shushi Peng,Glen P. Peters,Catherine Prigent,Ronald G. 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,Apostolos Voulgarakis,Thomas Weber,Michiel van Weele,Guido R. van der Werf,Ray F. Weiss,Doug Worthy,Debra Wunch,Yi Yin,Yi Yin,Yukio Yoshida,Weiya Zhang,Zhen Zhang,Yuanhong Zhao,Bo Zheng,Qing Zhu,Qiuan Zhu,Qianlai Zhuang +95 more
TL;DR: 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-modeling 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) as discussed by the authors.
Journal ArticleDOI
The global methane budget 2000–2012
Marielle Saunois,Philippe Bousquet,Ben Poulter,Anna Peregon,Philippe Ciais,Josep G. Canadell,Edward J. Dlugokencky,Giuseppe Etiope,David Bastviken,Sander Houweling,Greet Janssens-Maenhout,Francesco N. Tubiello,Simona Castaldi,Robert B. Jackson,Mihai Alexe,Vivek K. Arora,David J. Beerling,Peter Bergamaschi,Donald R. Blake,Gordon Brailsford,Victor Brovkin,Lori Bruhwiler,Cyril Crevoisier,Patrick M. Crill,Kristofer R. Covey,Charles L. Curry,Christian Frankenberg,Nicola Gedney,Lena Höglund-Isaksson,Misa Ishizawa,Akihiko Ito,Fortunat Joos,Heon Sook Kim,Thomas Kleinen,Paul B. Krummel,Jean-Francois Lamarque,Ray L. Langenfelds,Robin Locatelli,Toshinobu Machida,Shamil Maksyutov,Kyle C. McDonald,Julia Marshall,Joe R. Melton,Isamu Morino,Vaishali Naik,Simon O'Doherty,Frans-Jan W. Parmentier,Prabir K. Patra,Changhui Peng,Shushi Peng,Glen P. Peters,Isabelle Pison,Catherine Prigent,Ronald G. Prinn,Michel Ramonet,William J. Riley,Makoto Saito,Monia Santini,Ronny Schroeder,Ronny Schroeder,Isobel J. Simpson,Renato Spahni,P. Steele,Atsushi Takizawa,Brett F. Thornton,Hanqin Tian,Yasunori Tohjima,Nicolas Viovy,Apostolos Voulgarakis,Michiel van Weele,Guido R. van der Werf,Ray F. Weiss,Christine Wiedinmyer,David J. Wilton,Andy Wiltshire,Doug Worthy,Debra Wunch,Xiyan Xu,Yukio Yoshida,Bowen Zhang,Zhen Zhang,Qiuan Zhu +81 more
TL;DR: The Global Carbon Project (GCP) as discussed by the authors is a consortium of multi-disciplinary scientists, including atmospheric physicists and chemists, biogeochemists of surface and marine emissions, and socio-economists who study anthropogenic emissions.
Global Methane Budget 2000-2012
Marielle Saunois,Philippe Bousquet,B. Poulter,Anna Peregon,Philippe Ciais,Josep G. Canadell,Edward J. Dlugokencky,Giuseppe Etiope,David Bastviken,Sander Houweling,Greet Janssens-Maenhout,Francesco N. Tubiello,Simona Castaldi,Robert B. Jackson,Mihai Alexe,Vivek K. Arora,David J. Beerling,Peter Bergamaschi,Donald R. Blake,Gordon Brailsford,Brovkin,Lori Bruhwiler,C. D. Crevoisier,Patrick M. Crill,Kristofer R. Covey,Charles L. Curry,Christian Frankenberg,Nicola Gedney,L. Höglund-Isaksson,Misa Ishizawa,Akihiko Ito,Fortunat Joos,Heon-Sook Kim,Thomas Kleinen,Paul B. Krummel,Jean-Francois Lamarque,Ray L. Langenfelds,Robin Locatelli,Toshinobu Machida,Shamil Maksyutov,Kyle C. McDonald,Julia Marshall,Melton,Isamu Morino,Naik,S. Oâ Doherty,Frans-Jan W. Parmentier,Prabir K. Patra,Changhui Peng,Shushi Peng,Glen P. Peters,Isabelle Pison,Catherine Prigent,Ronald G. Prinn,Michel Ramonet,William J. Riley,Makoto Saito,Monia Santini,Ronny Schroeder,Isobel J. Simpson,Renato Spahni,P. Steele,Atsushi Takizawa,Brett F. Thornton,Hanqin Tian,Yasunori Tohjima,Nicolas Viovy,Apostolos Voulgarakis,M. van Weele,G. R. van der Werf,Ray F. Weiss,Christine Wiedinmyer,David J. Wilton,Andy Wiltshire,Douglas E. J. Worthy,Debra Wunch,Xiyan Xu,Yukio Yoshida,Bowen Zhang,Zhen Zhang,Qing Zhu +80 more
Journal ArticleDOI
Emerging role of wetland methane emissions in driving 21st century climate change.
Zhen Zhang,Zhen Zhang,Niklaus E. Zimmermann,Andrea Stenke,Xin Li,Elke L. Hodson,Gaofeng Zhu,Chunlin Huang,Benjamin Poulter,Benjamin Poulter +9 more
TL;DR: It is found that climate change-induced increases in boreal wetland extent and temperature-driven increases in tropical CH4 emissions will dominate anthropogenicCH4 emissions by 38 to 56% toward the end of the 21st century under the Representative Concentration Pathway (RCP2.6) and climate mitigation policies must consider mitigation of wetland CH4 feedbacks to maintain average global warming below 2 °C.
Journal ArticleDOI
National wetland mapping in China: A new product resulting from object-based and hierarchical classification of Landsat 8 OLI images
Dehua Mao,Zongming Wang,Baojia Du,Lin Li,Yanlin Tian,Mingming Jia,Yuan Zeng,Kaishan Song,Ming Jiang,Yeqiao Wang +9 more
TL;DR: Wang et al. as mentioned in this paper developed a hybrid object-based and hierarchical classification approach (HOHC) and a new wetland classification system for remote sensing, which resulted in a wetland map of China with an overall classification accuracy of 95.1%.
References
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TL;DR: Myhre et al. as discussed by the authors presented the contribution of Working Group I to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change (IPCC) 2013: Anthropogenic and Natural Radiative forcing.
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Journal ArticleDOI
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Three decades of global methane sources and sinks
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An integrated biosphere model of land surface processes, terrestrial carbon balance, and vegetation dynamics
Jonathan A. Foley,I. Colin Prentice,Navin Ramankutty,Samuel Levis,David Pollard,Steven Sitch,Alex Haxeltine +6 more
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