https://www.earth-prints.org/entities/publication/66b2a2c1-963a-4054-9e8b-8cebd6b3e1b8
Reappraisal of the fossil methane budget and related emission from geologic sources
Converging evidence from new top-down and bottomup estimates of fossil "radiocarbon-free" methane emissions indicates that natural geologic sources account for...
of themethane budget