The vertical transport of surface water into the internal ocean, known as subduction, is one of the main vertical redistribution mechanisms of matter. These events are efficient way to inject surface organic carbon into the ocean, yet they are extremely hard to observe. New instrumental approaches, BGC-Argo floats, have shown the occurrence of localized and intermittent subduction episodes. Using BGC-Argo floats, we focused on subduction episodes in the Kuroshio Extension region and revealed the role of such events for the export of organic matter, which is called subduction-pump.

Biogeochemical-Argo, carbon export