Editing Anthropogenic methane emissions (section)

== Monitoring and Measurement ==
Monitoring anthropogenic methane emissions involves a combination of bottom-up and top-down approaches. Bottom-up methods include national and sub-national emission inventories compiled from activity data and emission factors, such as those provided by the Emissions Database for Global Atmospheric Research (EDGAR). Top-down approaches utilize atmospheric measurements from ground stations, aircraft, and satellites to infer methane sources and fluxes. Scientific institutions and environmental agencies employ these methods to improve the accuracy and resolution of emission estimates, supporting climate research and policy evaluation.

Within the SIGNAL system, this phenomenon is treated as a defined environmental signal whose boundaries and measurement conventions are described below.