Fig. 16From: Investigating regional source and sink patterns of Alpine CO2 and CH4 concentrations based on a back trajectory receptor modelSeasonal mean CO2 concentrations (in ppm) at the surface over Central Europe aggregated from the Jena CarboScope estimates of the surface-atmosphere CO2 exchange based on atmospheric measurements (run ID version s04_v4.1, C. Rödenbeck) for the exemplary year 2011Back to article page