Emissions of methane in Europe inferred by total column measurements

Wunch, Debra; Jones, Dylan B. A.; Toon, Geoffrey C.; Deutscher, Nicholas M.; Hase, Frank; Notholt, Justus; Sussmann, Ralf; Warneke, Thorsten; Kuenen, Jeroen; Denier van der Gon, Hugo; Fisher, Jenny A.; Maasakkers, Joannes D.

Using five long-running ground-based atmospheric observatories in Europe, we demonstrate the utility of long-term, stationary, ground-based measurements of atmospheric total columns for verifying annual methane emission inventories. Our results indicate that the methane emissions for the region in Europe between Orléans, Bremen, Białystok, and Garmisch-Partenkirchen are overestimated by the state-of-the-art inventories of the Emissions Database for Global Atmospheric Research (EDGAR) v4.2 FT2010 and the high-resolution emissions database developed by the Netherlands Organisation for Applied Scientific Research (TNO) as part of the Monitoring Atmospheric Composition and Climate project (TNO-MACC_III), possibly due to the disaggregation of emissions onto a spatial grid. Uncertainties in the carbon monoxide inventories used to compute the methane emissions contribute to the discrepancy between our inferred emissions and those from the inventories.

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Wunch, Debra / Jones, Dylan B. A. / Toon, Geoffrey C. / et al: Emissions of methane in Europe inferred by total column measurements. 2019. Copernicus Publications.

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