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  Ensemble estimate of global wetland methane emissions over the period 2000-2020 (under open discussion)

Zhang, Z., Poulter, B., Melton, J., Riley, W. J., Allen, G. H., Beerling, D. J., et al. (2024). Ensemble estimate of global wetland methane emissions over the period 2000-2020 (under open discussion). Nature Communications. doi:10.5194/egusphere-2024-1584.

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 Creators:
Zhang, Zhen, Author
Poulter, Benjamin, Author
Melton, Joe, Author
Riley, William J., Author
Allen, George H., Author
Beerling, David J., Author
Bousquet, Philippe, Author
Canadell, Josep G., Author
Fluet-Chouinard, Etienne, Author
Ciais, Philippe, Author
Gedney, Nicola, Author
Hopcroft, Peter O., Author
Ito, Akihiko, Author
Jackson, Robert B., Author
Jain, Atul K., Author
Jensen, Katherine, Author
Joos, Fortunat , Author
Kleinen, Thomas1, Author                 
Knox, Sara, Author
Li, Tingting, Author
Li, Xin, AuthorLiu, Xiangyu, AuthorMcDonald, Kyle, AuthorMcNicol, Gavin, AuthorMiller, Paul A., AuthorMüller, Jurek, AuthorPatra, Prabir K., AuthorPeng, Changhui, AuthorPeng, Shushi, AuthorQin, Zhangcai, AuthorRiggs, Ryan M., AuthorSaunois, Marielle, AuthorSun, Qing, AuthorTian, Hanqin, AuthorXu, Xiaoming, AuthorYao, Yuanzhi, AuthorYi, Xi, AuthorZhang, Wenxin, AuthorZhu, Qing, AuthorZhu, Qiuan, AuthorZhuang, Qianlai, Author more..
Affiliations:
1Climate-Biogeosphere Interaction, Department Climate Variability, MPI for Meteorology, Max Planck Society, Bundesstraße 53, 20146 Hamburg, DE, ou_3364942              

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 Abstract: Due to ongoing climate change, methane (CH4) emissions from vegetated wetlands are projected to increase during the 21st century, challenging climate mitigation efforts aimed at limiting global warming. However, despite reports of rising emission trends, a comprehensive evaluation and attribution of recent changes is still lacking. Here we assessed global wetland CH4 emissions from 2000 to 2020 based on an ensemble of sixteen process-based wetland models. Our results estimated global average wetland CH4 emissions at 158±24 (mean ± 1σ) Tg CH4 yr-1 for the period 2010–2020, with an average decadal increase of 6–7 Tg CH4 yr-1 compared to the decade of 2000–2009. The increases in the four latitudinal bands of 90° S–30° S, 30° S–30° N, 30° N–60° N, and 60° N–90° N were 0.1–0.2 Tg CH4 yr-1, 3.6–3.7 Tg CH4 yr-1, 1.8–2.4 Tg CH4 yr-1, and 0.6–0.8 Tg CH4 yr-1, respectively, over the two decades. The modeled CH4 sensitivities to temperature show reasonable consistency with eddy covariance-based measurements from 34 sites. Rising temperature was the primary driver of the increase, while precipitation and rising atmospheric CO2 concentrations played secondary roles with high levels of uncertainty. These modeled results suggest climate change is driving increased wetland CH4 emissions and that direct and sustained measurements are needed to monitor developments.

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Language(s): eng - English
 Dates: 2023-042024-06-11
 Publication Status: Published online
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: BibTex Citekey: ZhangPoulterEtAl2023
DOI: 10.5194/egusphere-2024-1584
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Grant ID : 41830643, 41722101
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Funding program : Birmingham Fellowship, BlueBEAR HPC service
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Title: Nature Communications
  Abbreviation : Nat. Commun.
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: -
Pages: - Volume / Issue: - Sequence Number: - Start / End Page: - Identifier: ISSN: 2041-1723
CoNE: https://pure.mpg.de/cone/journals/resource/2041-1723