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- A33F-2227: Understanding Methane Variability in River Floodplains: A Screening Framework for Hotspot Likelihood
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Board 2227‚ Hall EFG (Poster Hall)NOLA CC
Author(s):Generic 'disconnected' Message
Edward Turk, University of San Francisco (First Author, Presenting Author)
Kenneth Celis, University of San Francisco
Elizabeth Paulus, Stanford University
Vincent Noel, SLAC National Accelerator Laboratory
Kristin Boye, SLAC National Acceleratory Laboratory
Amrita Bhattacharyya, University of San Francisco
Ruth Tinnacher, California State University East Bay
Amalia Kokkinaki, University of San Francisco
Riverine floodplains can release methane in small, but intense hotspots that current survey methods may miss. The general hypothesis is that wetter areas are more likely to produce more methane, but uncertainty remains because methane fluxes are difficult to map and there are records of methane emissions from relatively dry areas. We measured methane at several locations in Colorado mountain valleys and found that the highest emissions came from wet areas with shallow, carbon-rich river sediments. However, questions remain about how tracking emission patterns from floodplain microsites could aid in improving how sources of methane are accounted for in larger climate assessments.
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