2021 Science study finds US landfill methane emissions 40% higher than reported, using aerial surveys.

A study published in Science reveals that methane emissions from major US landfills are significantly underreported, with actual emissions being 40% greater than previously stated. The study utilized aerial surveys to identify point source emissions from hundreds of waste sites, providing crucial advantages over traditional survey methods. Methane, a potent greenhouse gas with over 80 times the warming capacity of carbon dioxide during its first 20 years in the atmosphere, is primarily generated from decomposing organic materials in landfills. Methane emissions from landfills constitute approximately 20% of global methane emissions and are the third leading contributor after agriculture and fossil fuels.

March 28, 2024
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