Reconciling the global methane budget
There is still a gap between what we know about methane emissions and methane concentrations in the atmosphere. If we add all the methane emissions estimated with data inventories and models, we get a number bigger than the one consistent with the growth in methane concentrations. Isotope signatures suggest that the majority of the recent increase might be of biogenic origin. This highlights the need for better accounting and reporting of methane emissions. The project will look at methane sources and sinks, at agricultural and wetland emissions, as well as fugitive emissions from fossil fuel infrastructure to refine our understanding of the methane budget.