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- B23L-1912: Wetland Methane Flux Variability Inferred from In-Situ, Drone, and Satellite Measurements
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Board 1912‚ Hall EFG (Poster Hall)NOLA CC
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Zachary Brown, Murray State University (First Author, Presenting Author)
Bassil El Masri, University of Illinois at Urbana
Liane Guild, NASA Ames Res Ctr
Matthew Johnson, Earth Science Division, NASA Ames Research Center
Wetlands are a vital part of Earth’s climate system because they both store and release methane (CH₄), a powerful greenhouse gas. However, CH₄ emissions from wetlands vary widely depending on the type of wetland, the time of year, and even small differences within a single site. This makes it difficult to understand and accurately represent wetland emissions at larger scales. In this study, we explore how CH₄ is released from different sources within a forested wetland—including tree stems, cypress knees, and soils—and how these emissions change over time. We also examine how tools like drones and satellites can help monitor these emissions from above. Early results show that satellite-based vegetation indices can explain 31–66% of CH₄ emissions in various wetland types, while water-based indices can explain around 42% of emissions in more marine-influenced wetlands. By combining field measurements with Earth observations, this research helps improve our understanding of how forested wetlands contribute to atmospheric CH₄ levels—and how we can better monitor these emissions over time.
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