Articles | Volume 16, issue 9
https://doi.org/10.5194/essd-16-4325-2024
https://doi.org/10.5194/essd-16-4325-2024
Review article
 | 
25 Sep 2024
Review article |  | 25 Sep 2024

Comparison of observation- and inventory-based methane emissions for eight large global emitters

Ana Maria Roxana Petrescu, Glen P. Peters, Richard Engelen, Sander Houweling, Dominik Brunner, Aki Tsuruta, Bradley Matthews, Prabir K. Patra, Dmitry Belikov, Rona L. Thompson, Lena Höglund-Isaksson, Wenxin Zhang, Arjo J. Segers, Giuseppe Etiope, Giancarlo Ciotoli, Philippe Peylin, Frédéric Chevallier, Tuula Aalto, Robbie M. Andrew, David Bastviken, Antoine Berchet, Grégoire Broquet, Giulia Conchedda, Stijn N. C. Dellaert, Hugo Denier van der Gon, Johannes Gütschow, Jean-Matthieu Haussaire, Ronny Lauerwald, Tiina Markkanen, Jacob C. A. van Peet, Isabelle Pison, Pierre Regnier, Espen Solum, Marko Scholze, Maria Tenkanen, Francesco N. Tubiello, Guido R. van der Werf, and John R. Worden

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Cited articles

Andrew, R. M.: A comparison of estimates of global carbon dioxide emissions from fossil carbon sources, Earth Syst. Sci. Data, 12, 1437–1465, https://doi.org/10.5194/essd-12-1437-2020, 2020. 
Assè-Wassa Sama, M. and Berenger, V.: In Africa, Greenhouse gas emissions from the waste sector increase, despite efforts from local actors, Observatory op Climate Action in Africa report, https://www.climate-chance.org/wp-content/uploads/2023/06/obsaf_emag6_note-economie-circulaire-et-dechets_eng-2.pdf (last access: November 2023), 2023. 
Balcombe, P., Speirs, J. F., Brandon, N. P., and Hawkes, A. D.: Methane emissions: Choosing the right climate metric and time horizon, Environ. Sci.-Processes Impacts, 20, 1323, https://doi.org/10.1039/C8EM00414E, 2018. 
Bastviken, D., Wilk, J., Duc, N. T., Gålfalk, M., Karlson, M., Neset, T.-S., Neset, Opach, T., Enrich-Prast, A., and Sundgren, I.: Critical method needs in measuring greenhouse gas fluxes, Environ. Res. Lett., 17, 104009, https://doi.org/10.1088/1748-9326/ac8fa9, 2022. 
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Short summary
This study provides an overview of data availability from observation- and inventory-based CH4 emission estimates. It systematically compares them and provides recommendations for robust comparisons, aiming to steadily engage more parties in using observational methods to complement their UNFCCC submissions. Anticipating improvements in atmospheric modelling and observations, future developments need to resolve knowledge gaps in both approaches and to better quantify remaining uncertainty.
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