Editing CH4 Emissions Mass Flux (section)

== Boundary Conditions ==
Boundary inclusions encompass all methane emissions released into the atmosphere from terrestrial, aquatic, and anthropogenic sources worldwide. This includes emissions from fossil fuel extraction and use, agricultural activities (such as enteric fermentation and rice paddies), waste management (landfills and wastewater treatment), biomass burning, and natural sources like wetlands and geological seepage.

Boundary exclusions involve methane present in the atmosphere not directly attributable to surface emissions during the measurement period, such as methane transported from outside the defined temporal or spatial aggregation. Additionally, methane contained within soil or water bodies not actively emitted to the atmosphere during the annual aggregation period is excluded.