This fact clearly underlines the sensitivity of model output to the properties of inflowing water from the Gibraltar strait, but also increases our confidence in the robustness of results in the area far from the boundaries. Clearly, the variability in the estimates of spatial distribution of CO2 fluxes also alters the repartition of the total flux among Mediterranean EEZs, up to significantly modifying the total and per area value of different countries. In most of the
cases changes in per area values are lower than 50 s/km2/year, but
in a few cases (e.g. Malta, Tunisia) they can be higher, and in the countries close to the Atlantic boundaries, higher than 200 s/km2/ year, for the reasons mentioned above. The uncertainty analysis in biogeochemical properties therefore suggests that the estimates
for carbon flux values across the Mediterranean EZZ given above could be – on average – about 25–50% lower, but with relevant spatial differences.