Solubility (a, c) and biological contributions (b, d) for experiment woriv (a, b) (excluding increases in nutrient inputs from land) and the hindcast simulation hist (c, d). The sum of the solubility and biological contributions (cyan) corresponds to the total FCO2 anomaly relative to ctrl. The solubility and biological signals as well as their sustaining net import and export fluxes are derived from the carbon budget of 1991-2010 (grey shaded area and values in the right figure margins) by assuming constant relative contributions over the whole simulation period. Negative changes in FCO2 indicate increasing CO 2 uptake. OC/IC advective, net advective transport of organic/inorganic carbon to the open ocean; OC/IC sediment, net deposition of organic/inorganic carbon in shelf sediments; sol/bio FCO2, net solubility/biological CO 2 flux at the sea surface; IC stock, storage of inorganic carbon in shelf waters.
