Articles | Volume 24, issue 4
https://doi.org/10.5194/acp-24-2129-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-24-2129-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Investigation of the renewed methane growth post-2007 with high-resolution 3-D variational inverse modeling and isotopic constraints
Laboratoire des Sciences du Climat et de l'Environnement, CEA-CNRS-UVSQ, IPSL, Gif-sur-Yvette, France
now at: Empa, Swiss Federal Laboratories for Materials Science and Technology, Dübendorf, Switzerland
Marielle Saunois
Laboratoire des Sciences du Climat et de l'Environnement, CEA-CNRS-UVSQ, IPSL, Gif-sur-Yvette, France
Antoine Berchet
Laboratoire des Sciences du Climat et de l'Environnement, CEA-CNRS-UVSQ, IPSL, Gif-sur-Yvette, France
Isabelle Pison
Laboratoire des Sciences du Climat et de l'Environnement, CEA-CNRS-UVSQ, IPSL, Gif-sur-Yvette, France
Philippe Bousquet
Laboratoire des Sciences du Climat et de l'Environnement, CEA-CNRS-UVSQ, IPSL, Gif-sur-Yvette, France
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Cited
17 citations as recorded by crossref.
- Characterizing anthropogenic and biogenic sources of CO2 and CH4 using carbon isotopic signature δ13C in Houston, Texas, USA I. Karim & B. Rappenglück https://doi.org/10.1016/j.atmosenv.2026.122058
- Improving the ensemble square root filter (EnSRF) in the Community Inversion Framework: a case study with ICON-ART 2024.01 J. Thanwerdas et al. https://doi.org/10.5194/gmd-18-1505-2025
- High-Resolution Global Methane Mapping: Advances in Satellite Remote Sensing, Machine Learning, and Policy Frameworks A. Singh & . Madhubala https://doi.org/10.3390/methane5030021
- CH4 emissions from Northern Europe wetlands: compared data assimilation approaches G. Monteil et al. https://doi.org/10.5194/acp-25-14251-2025
- The methane imperative D. Shindell et al. https://doi.org/10.3389/fsci.2024.1349770
- Inverse modeling of 2010–2022 satellite observations shows that inundation of the wet tropics drove the 2020–2022 methane surge Z. Qu et al. https://doi.org/10.1073/pnas.2402730121
- Dynamic and high methane emission flux in pond and lake aquaculture J. Zhao et al. https://doi.org/10.1016/j.jhydrol.2025.132765
- Global Methane Budget 2000–2020 M. Saunois et al. https://doi.org/10.5194/essd-17-1873-2025
- A global dataset of δ13C-CH4 source signatures and associated uncertainties (1998–2022), with a sensitivity analysis to support isotopic inversions E. Tapin et al. https://doi.org/10.5194/essd-18-4793-2026
- Fractionation of Methane Isotopologues during Preparation for Analysis from Ambient Air E. Safi et al. https://doi.org/10.1021/acs.analchem.3c04891
- Distinct dual-isotopic signatures of major methane sources in South Asia P. Yao et al. https://doi.org/10.5194/acp-26-7765-2026
- Partitioning anthropogenic and natural methane emissions in Finland during 2000–2021 by combining bottom-up and top-down estimates M. Tenkanen et al. https://doi.org/10.5194/acp-25-2181-2025
- Microbial driver of 2006–2023 CH 4 growth indicated by trends in atmospheric δD–CH 4 and δ 13 C–CH 4 B. Riddell-Young et al. https://doi.org/10.1073/pnas.2516543122
- Exploring uncertainty reduction in high-resolution methane emissions in Gippsland through in-situ data: A Bayesian inverse modeling and variational assimilation method S. Aghdasi et al. https://doi.org/10.1016/j.atmosres.2025.107911
- German methane fluxes estimated top-down using ICON–ART – Part 2: Inversion results for 2021 V. Bruch et al. https://doi.org/10.5194/acp-25-17187-2025
- Incorporating methane isotopologues alters tropical and subtropical methane emission estimates X. Yu et al. https://doi.org/10.1038/s41467-026-72668-2
- Harmonisation of methane isotope ratio measurements from different laboratories using atmospheric samples B. Dasgupta et al. https://doi.org/10.5194/amt-18-6591-2025
17 citations as recorded by crossref.
- Characterizing anthropogenic and biogenic sources of CO2 and CH4 using carbon isotopic signature δ13C in Houston, Texas, USA I. Karim & B. Rappenglück https://doi.org/10.1016/j.atmosenv.2026.122058
- Improving the ensemble square root filter (EnSRF) in the Community Inversion Framework: a case study with ICON-ART 2024.01 J. Thanwerdas et al. https://doi.org/10.5194/gmd-18-1505-2025
- High-Resolution Global Methane Mapping: Advances in Satellite Remote Sensing, Machine Learning, and Policy Frameworks A. Singh & . Madhubala https://doi.org/10.3390/methane5030021
- CH4 emissions from Northern Europe wetlands: compared data assimilation approaches G. Monteil et al. https://doi.org/10.5194/acp-25-14251-2025
- The methane imperative D. Shindell et al. https://doi.org/10.3389/fsci.2024.1349770
- Inverse modeling of 2010–2022 satellite observations shows that inundation of the wet tropics drove the 2020–2022 methane surge Z. Qu et al. https://doi.org/10.1073/pnas.2402730121
- Dynamic and high methane emission flux in pond and lake aquaculture J. Zhao et al. https://doi.org/10.1016/j.jhydrol.2025.132765
- Global Methane Budget 2000–2020 M. Saunois et al. https://doi.org/10.5194/essd-17-1873-2025
- A global dataset of δ13C-CH4 source signatures and associated uncertainties (1998–2022), with a sensitivity analysis to support isotopic inversions E. Tapin et al. https://doi.org/10.5194/essd-18-4793-2026
- Fractionation of Methane Isotopologues during Preparation for Analysis from Ambient Air E. Safi et al. https://doi.org/10.1021/acs.analchem.3c04891
- Distinct dual-isotopic signatures of major methane sources in South Asia P. Yao et al. https://doi.org/10.5194/acp-26-7765-2026
- Partitioning anthropogenic and natural methane emissions in Finland during 2000–2021 by combining bottom-up and top-down estimates M. Tenkanen et al. https://doi.org/10.5194/acp-25-2181-2025
- Microbial driver of 2006–2023 CH 4 growth indicated by trends in atmospheric δD–CH 4 and δ 13 C–CH 4 B. Riddell-Young et al. https://doi.org/10.1073/pnas.2516543122
- Exploring uncertainty reduction in high-resolution methane emissions in Gippsland through in-situ data: A Bayesian inverse modeling and variational assimilation method S. Aghdasi et al. https://doi.org/10.1016/j.atmosres.2025.107911
- German methane fluxes estimated top-down using ICON–ART – Part 2: Inversion results for 2021 V. Bruch et al. https://doi.org/10.5194/acp-25-17187-2025
- Incorporating methane isotopologues alters tropical and subtropical methane emission estimates X. Yu et al. https://doi.org/10.1038/s41467-026-72668-2
- Harmonisation of methane isotope ratio measurements from different laboratories using atmospheric samples B. Dasgupta et al. https://doi.org/10.5194/amt-18-6591-2025
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Latest update: 21 Jul 2026
Short summary
We investigate the causes of the renewed growth of atmospheric methane (CH4) after 2007 using inverse modeling. We use the additional information provided by observations of CH4 isotopic compositions to better differentiate between the emission categories. Accounting for the large uncertainties in source signatures, our results suggest that the post-2007 increase in atmospheric CH4 was caused by similar increases in emissions from (1) fossil fuels and (2) agriculture and waste.
We investigate the causes of the renewed growth of atmospheric methane (CH4) after 2007 using...
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