Nutrient streams in the North Pacific

The nutrient streams in the North Pacific were examined by analyzing results derived from inverse calculation of World Ocean Circulation Experiment (WOCE)-revisit cruise data. Kuroshio, Alaskan Stream, and Oyashio drive most intensive transport within basin. upper portion stream (lighter than 26.2 kg/m3) contains mode waters recirculates subtropical gyre, while intermediate (26.2–27.15 relates to Intermediate Water (NPIW) contributes stream. concentration increases gyre along Kuroshio Extensions but decreases subarctic Stream region. This increase or decrease upstream region downstream mainly lateral water exchange, although it also partly depends on biogeochemical processes vertical diffusion. Specifically, exchange with lower latitudes nitrate that Okhotsk Sea Oyashio. For transport, our estimation shows ventilation subduction induction are comparable sum advection implies related is a dynamic balance an annual cycle should be quantified future work.