Methane (CH4) contributes to about a third of today's anthropogenic global warming. Radiocarbon (14C) measurements of atmospheric CH4 can be used to track its origin: either from biogenic sources (such as agriculture, waste handling, lakes/reservoirs or wetlands) or from fossil sources (e.g. fossil-fuel combustion or leakages from natural gas networks).
Based on a novel CH4 extraction setup, we want to extend the number of atmospheric 14CH4 measurements within the new-starting interdisciplinary SNSF-project RICH, which aims to develop a national radiocarbon inventory of Switzerland for all compartments of the ecosystem.
This work was carried out in the group of Prof. Dr. Sönke Szidat.
C. Espic, M. Liechti, M. Battaglia, D. Paul, T. Röckmann, S. Szidat;
"Compound-specific radiocarbon analysis of atmospheric methane: a new preconcentration and purification setup"
Radiocarbon, 2019, 61(51), 1461-1476;
T. Eglinton, H. Graven, S. Szidat, F. Hagedorn;
"Radiocarbon Inventories of Switzerland (RICH): An integrated approach to understand the changing carbon cycle"
Swiss National Science Foundation (SNSF), 2020;