ArticleProceedings of the National Academy of Sciences of the United States of America2024
Inverse modeling of 2010-2022 satellite observations shows that inundation of the wet tropics drove the 2020-2022 methane surge.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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Who cites it
11 citing papers in PubMed.
- Tropical Wetland Methane Emissions and Trends (2004-2023) Inferred from Landsat-Based Inundated Vegetation Data.Environmental science & technology · 2026Article
- Unveiling cascading lag effects of wetland methane emissions: Evidence from Lake Chad in Africa.Science advances · 2026Article
- Isotopic constraints in methane inversions reveal larger trends in wetland emissions with improved linkage to terrestrial water storage.Nature communications · 2026Article
- Multidecadal preindustrial methane variability can be explained by noise in the source-sink imbalance.Proceedings of the National Academy of Sciences of the United States of America · 2026Article
- Global methane emissions rebounded in 2024 despite a deceleration in atmospheric growth.Nature communications · 2026Article
- Attributing 2019-2024 methane growth using TROPOMI satellite observations.Science advances · 2026Article
- Converging evidence for reduced global atmospheric oxidation in 2020.National science review · 2025Article
- Reply to Uveges et al.: The assumption of a time-constant emission factor leads to biased estimates of fossil fuel methane emissions.Proceedings of the National Academy of Sciences of the United States of America · 2025Article
- Article
- Limited evidence that tropical inundation and precipitation powered the 2020-2022 methane surge.Communications earth & environment · 2025Article
- Fate of methane in canals draining tropical peatlands.Nature communications · 2024Article
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6 authors.
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Abstract
Atmospheric methane concentrations rose rapidly over the past decade and surged in 2020-2022 but the causes have been unclear. We find from inverse analysis of GOSAT satellite observations that emissions from the wet tropics drove the 2010-2019 increase and the subsequent 2020-2022 surge, while emissions from northern mid-latitudes decreased. The 2020-2022 surge is principally contributed by emissions in Equatorial Asia (43%) and Africa (30%). Wetlands are the major drivers of the 2020-2022 emission increases in Africa and Equatorial Asia because of tropical inundation associated with La Niña conditions, consistent with trends in the GRACE terrestrial water storage data. In contrast, emissions from major anthropogenic emitters such as the United States, Russia, and China are relatively flat over 2010-2022. Concentrations of tropospheric OH (the main methane sink) show no long-term trend over 2010-2022 but a decrease over 2020-2022 that contributed to the methane surge.
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