Fig. 1: Geographical variability of POC flux by PIP.

Total POC flux by PIP (a) and by the different contributors as entrainment/detrainment (b), horizontal advection (c), vertical advection (d), vertical diffusion (e), and eddy mixing (f). Note that the vertical diffusion is strictly dependent on the parameterization. The values shown here correspond to a choice of the maximum diffusivity of O(10−3 m2 s−1). Lateral eddy mixing always attains values at least one order of magnitude lower than the other mechanisms.