Pathways of anthropogenic carbon subduction in the global ocean

摘要: The oceanic uptake of anthropogenic carbon is tightly coupled to subduction, i.e., the physical transfer from well-ventilated surface ocean its interior. Despite their importance, pathways subduction are poorly understood. Here we use an cycle model quantify mechanisms controlling this subduction. Over last decade, 90% subducted at base seasonally varying mixed layer. Vertical diffusion primary mechanism (contributing 65% total subduction), despite very low local fluxes. In contrast, advection drives spatial patterns with high positive and negative Our results suggest that vertical could have a leading role in which highlights need for accurate estimate intensity upper further constrain estimates future evolution uptake.