Decadal cyclical geological atmospheric emissions for a major marine seep field, offshore Coal Oil Point, Southern California.

ABSTRACT: The greenhouse gas, methane, budget has significant uncertainty for many sources, including natural geological emissions. A major uncertainty of geological methane emissions, including onshore and offshore hydrocarbon seepage from subsurface hydrocarbon reservoirs is the gas emissions' temporal variability. Current atmospheric methane budget models assume seepage is constant; nevertheless, available data and seepage conceptual models suggest gas seepage can vary considerably on timescales from second to century. The assumption of steady-seepage is used because long-term datasets to characterize these variabilities are lacking. A 30-year air quality dataset downwind of the Coal Oil Point seep field, offshore California found methane, CH₄, concentrations downwind of the seep field

SUBMITTER: Leifer I 

PROVIDER: S-EPMC9944285 | biostudies-literature | 2023 Feb

REPOSITORIES: biostudies-literature