Diffusion Simulation of CO_2 Discharged in Mesoscale Deep Ocean by Using Moving-Nesting Grid Technique

摘要

Although direct injection of CO_2 into the deep ocean is believed feasible for the mitigation of global warming, its impact on the marine environment is of concern. To dilute the injected CO_2 to the point of little biological influence, using a ship that cruises and injects CO_2, has been considered. To investigate the fate of CO_2 near the ship and in a mesoscale site, a multi-scale ocean model was developed in which a small-scale domain involving the injection ship moves in the mesoscale domain. The simulation results suggested that the moving ship is effective in suppressing the rise of CO_2 concentration.