Quantifying methane emissions from United States landfills.

Autor: Cusworth DH; Carbon Mapper, Pasadena, CA, USA.; Arizona Institutes for Resilience, University of Arizona, Tucson, AZ, USA., Duren RM; Carbon Mapper, Pasadena, CA, USA.; Arizona Institutes for Resilience, University of Arizona, Tucson, AZ, USA.; NASA Jet Propulsion Laboratory, Pasadena, CA, USA., Ayasse AK; Carbon Mapper, Pasadena, CA, USA., Jiorle R; Carbon Mapper, Pasadena, CA, USA., Howell K; Carbon Mapper, Pasadena, CA, USA., Aubrey A; Carbon Mapper, Pasadena, CA, USA., Green RO; NASA Jet Propulsion Laboratory, Pasadena, CA, USA., Eastwood ML; NASA Jet Propulsion Laboratory, Pasadena, CA, USA., Chapman JW; NASA Jet Propulsion Laboratory, Pasadena, CA, USA., Thorpe AK; NASA Jet Propulsion Laboratory, Pasadena, CA, USA., Heckler J; Center for Global Discovery and Conservation Science, Arizona State University, Tempe, AZ, USA., Asner GP; Center for Global Discovery and Conservation Science, Arizona State University, Tempe, AZ, USA., Smith ML; Scientific Aviation, Boulder, CO, USA., Thoma E; US Environmental Protection Agency, Washington, DC, USA., Krause MJ; US Environmental Protection Agency, Washington, DC, USA., Heins D; US Environmental Protection Agency, Washington, DC, USA., Thorneloe S; US Environmental Protection Agency, Washington, DC, USA.
Jazyk: angličtina
Zdroj: Science (New York, N.Y.) [Science] 2024 Mar 29; Vol. 383 (6690), pp. 1499-1504. Date of Electronic Publication: 2024 Mar 28.
DOI: 10.1126/science.adi7735
Abstrakt: Methane emissions from solid waste may represent a substantial fraction of the global anthropogenic budget, but few comprehensive studies exist to assess inventory assumptions. We quantified emissions at hundreds of large landfills across 18 states in the United States between 2016 and 2022 using airborne imaging spectrometers. Spanning 20% of open United States landfills, this represents the most systematic measurement-based study of methane point sources of the waste sector. We detected significant point source emissions at a majority (52%) of these sites, many with emissions persisting over multiple revisits (weeks to years). We compared these against independent contemporaneous in situ airborne observations at 15 landfills and established good agreement. Our findings indicate a need for long-term, synoptic-scale monitoring of landfill emissions in the context of climate change mitigation policy.
Databáze: MEDLINE