Core Insights - The research team from the Chinese Academy of Sciences has made significant progress in monitoring methane emissions from landfills using high-resolution satellite remote sensing technology, developing a new method for precise quantification of methane emissions [1][3] - Landfills are the third largest anthropogenic source of methane emissions globally, accounting for approximately 18% of total anthropogenic methane emissions, highlighting the importance of accurate monitoring [3] - The study utilized satellite data to assess methane emissions from 102 landfills worldwide, detecting 367 effective methane plumes and achieving precise quantification of emissions [3][4] Methodology and Findings - Traditional methane monitoring methods are limited in coverage, precision, and cost, while the new satellite-based approach offers higher spatial and temporal resolution for global methane emission quantification [3] - The research differentiated between open landfills without protective measures and sanitary landfills designed for safe waste treatment, revealing that open landfills emit methane at an average intensity 4.8 times higher than sanitary landfills [3][4] - The study's findings provide a scientific basis for correcting biases in current emission databases and support the formulation of global reduction policies with reliable data [4]

Core Insights - The research team from the Chinese Academy of Sciences has made significant progress in monitoring methane emissions from landfills using high-resolution satellite remote sensing technology, providing a new method for precise quantification of methane emissions [1][2] - Landfills are identified as the third-largest anthropogenic source of methane emissions globally, accounting for approximately 18% of total anthropogenic methane emissions, highlighting the importance of accurate monitoring [1] - The study utilized satellites with 30-meter spatial resolution and 10-nanometer spectral resolution, identifying and quantifying methane plumes from 102 landfills worldwide, detecting a total of 367 effective plumes [1] Methodology and Findings - The new method combines matched filtering algorithms and integrated mass enhancement techniques to achieve precise quantification of methane emissions, overcoming limitations of traditional ground measurement and model estimation methods [1] - The research indicates that the management practices of landfills significantly affect methane emissions, with open dumps emitting an average intensity of methane that is 4.8 times higher than sanitary landfills [2] - The study calls for the international community to enhance landfill facilities and suggests establishing a global satellite monitoring data-sharing platform to ensure equitable access to critical emission data for resource-limited countries [2]

Core Insights - The research team led by Cheng Tianhai has made significant progress in monitoring methane emissions from landfills, utilizing high-resolution satellite remote sensing technology to develop a new method for accurately quantifying methane emissions from landfills [1] - The findings of this research have been systematically evaluated on a global scale, assessing methane emissions from landfills worldwide [1] - The results of this study were published online in the international academic journal "Nature Climate Change" on July 28, 2025 [1]