We find that about 1/3 of the total DOC in the Pacific Deep Water is removed during the northeastward transport of dissolved carbon along the trench axis. These findings are relevant for our understanding of the carbon cycle dynamic of the global oceanic thermohaline circulation as the “lungs” of the global climate system and reveals that the Pacific deep-water DOC undergoes distinct removal compared to those in the Atlantic and Indian Oceans along the thermohaline transport.
