Ocean circulation and ventilation play a crucial role in how the ocean absorbs and stores anthropogenic carbon (C), particularly in the western North Pacific, a significant carbon sink.
In a study conducted in May and August 2018, researchers measured the water column's carbonate system and dissolved inorganic radiocarbon in three zones: Kuroshio Extension (KE), Kuroshio Recirculation (KR), and subtropical zones.
Findings revealed that the KR and subtropical zones exhibited higher carbon inventories and accumulation rates compared to historical data, primarily due to the influence of subtropical mode water, while the KE zone showed lower carbon storage due to complex hydrological dynamics.