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][2] - Landfills are the third-largest anthropogenic source of methane emissions globally, accounting for approximately 18% of total anthropogenic methane emissions, making accurate monitoring crucial [1] - The study results were published in the international journal "Nature Climate Change" on July 28, 2025, and provide a new solution for global methane emission monitoring and reliable data support for emission reduction policies [2] Research Methodology - The research utilized satellites with a spatial resolution of 30 meters and a spectral resolution of 10 nanometers, employing matched filtering algorithms and integrated mass enhancement methods to identify and quantify methane plumes from 102 landfills worldwide [1] - A total of 367 effective plumes were detected, allowing for precise quantification of methane emissions from global landfills [1] Findings on Emission Differences - The study differentiated between two types of landfills: open dumps without protective measures and sanitary landfills designed for safe waste management [2] - The results indicated that methane emissions are significantly influenced by management practices, with open dumps exhibiting an average emission intensity 4.8 times higher than sanitary landfills [2] - This research provides a scientific basis for correcting biases in current emission databases by systematically assessing methane emissions on a global scale [2]