ArticleCommunications earth & environment2025
Limited evidence that tropical inundation and precipitation powered the 2020-2022 methane surge.
Article in Communications earth & environment, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 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
- A Global Methane Observation System to Reduce Uncertainty for Anthropogenic and Natural Sources and Sinks for Detecting and Attributing Climate Feedbacks.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026Article
- Global methane emissions rebounded in 2024 despite a deceleration in atmospheric growth.Nature communications · 2026Article
- Worldwide inference of national methane emissions by inversion of satellite observations with UNFCCC prior estimates.Nature communications · 2025Article
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Authors and funding
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Atmospheric methane is rapidly increasing, and the role of tropical wetlands in the global methane budget raises concerns about a potential climate-wetland-methane feedback. Here we use Cyclone Global Navigation Satellite System observations to map monthly inundation dynamics across the tropics (37.4°S to 37.4°N) at high resolution (0.01° × 0.01°) over five years (2018-2023), including cloud and vegetation-covered regions. Our results reveal large seasonal and interannual variations in wetland extent not captured in traditional inundation products, with strong El Niño-Southern Oscillation correlations. Tropical wetland models driven by these inundation observations, independent precipitation products, or constrained by total water observations do not show growth in wetland methane emissions from 2020-2022. This suggests the 2020-2022 growth in methane is best explained by other methane source or sink mechanisms, or that non-hydrological controls are more important in tropical wetland methane emissions than currently understood.
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