Localizing the Southern Ocean Biogeochemical Divide

Abstract The meridional overturning circulation consists of an upper and lower cell. Southern Ocean Biogeochemical Divide (SOBD) is the boundary between two cells in surface Ocean, but its location poorly constrained. Localizing SOBD important because biological nutrient utilization north south have fundamentally different consequences for global ocean primary production carbon sequestration. Here, we aim to localize by releasing virtual Lagrangian particles 40°S eddying sea‐ice model compare simulation results with observations. We find that a circumpolar band, where sectors are shaped oceanographic features: (a) Ekman transport, (b) γ = 27.6 kg m −3 neutral density outcrop, (c) fronts associated Antarctic Circumpolar Current. Our findings help understand how parts affects biologically driven