Fig. 2

Time series of spatially averaged fluxes for 2005–2009. Upper row: rural, urban and sea domains. Lower row: areas corresponding to EDGAR grid cells with flux higher than 1 mg CO₂ m² s⁻¹ (left panel) and 0.01 mg CO₂ m² s⁻¹ (center panel) and inner domain. The masks are those shown in Additional file 1: Figure S1. The black lines represent the posterior fluxes. The grey shaded area represents 1-sigma for the posterior uncertainty. The red solid and dashed lines correspond to the mean flux and 1-sigma uncertainty for the prior