Uncertainties also arise from the natural science estimation side, i.e. from uncertainties in the estimate of carbon fluxes. Results from the second set of simulations return a total CO2 flux of 18.1 million tonCO2/year, i.e. very close to the previous estimate. However, the analysis of the spatial distribution of fluxes indicates that there are differences in the estimates of the individual EEZs contributions, especially in the three countries close to the Altantic boundary. The third set of simulations indicates that while the contribution of the biological pump is fairly constant, about 15 million tonCO2/year (equivalent to about
300 million euro), the contribution of the physical pump over the
western part of the Mediterranean is greatly influenced by the properties of the incoming Atlantic water and by how much the physical field (currents) spread this water inside the basin. In fact, in the simulation with pCO2 rich Atlantic water the physical and solubility pumps in the four countries close to the Gibraltar strait can became as low (in respect to our reference simulation) as to counterbalance the positive contribution to biological fluxes, and return a total value for the Mediterranean Sea close to a neutral situation.
Uncertainties also arise from the natural science estimation side, i.e. from uncertainties in the estimate of carbon fluxes. Results from the second set of simulations return a total CO2 flux of 18.1 million tonCO2/year, i.e. very close to the previous estimate. However, the analysis of the spatial distribution of fluxes indicates that there are differences in the estimates of the individual EEZs contributions, especially in the three countries close to the Altantic boundary. The third set of simulations indicates that while the contribution of the biological pump is fairly constant, about 15 million tonCO2/year (equivalent to about300 million euro), the contribution of the physical pump over thewestern part of the Mediterranean is greatly influenced by the properties of the incoming Atlantic water and by how much the physical field (currents) spread this water inside the basin. In fact, in the simulation with pCO2 rich Atlantic water the physical and solubility pumps in the four countries close to the Gibraltar strait can became as low (in respect to our reference simulation) as to counterbalance the positive contribution to biological fluxes, and return a total value for the Mediterranean Sea close to a neutral situation.
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