Relevant methane emission to the atmosphere from a geological gas manifestation.

ABSTRACT: Quantifying natural geological sources of methane (CH₄) allows to improve the assessment of anthropogenic emissions to the atmosphere from fossil fuel industries. The global CH₄ flux of geological gas is, however, an object of debate. Recent fossil (¹⁴C-free) CH₄ measurements in preindustrial-era ice cores suggest very low global geological emissions (~ 1.6 Tg year^-1), implying a larger fossil fuel industry source. This is however in contrast with previously published bottom-up and top-down geo-emission estimates (~ 45 Tg year^-1) and even regional-scale emissions of ~ 1-2 Tg year^-1. Here we report on significant geological CH₄ emissions from the Lusi hydrothermal system (Indonesia), measured by ground-b

SUBMITTER: Mazzini A 

PROVIDER: S-EPMC7892996 | biostudies-literature | 2021 Feb

REPOSITORIES: biostudies-literature