Objective
Distribution and impact of lithogenic materials from east Asia on the western Pacific ecosystem in spring ; Observational study of the spatiotemporal change in oceanic atmospheric aerosol ; Study of the interaction of atmosphere and ocean with respect to clouds and rain system ; In situ measurement of vertical profile and long-term mooring of pH with electrode sensors; Development of on-board measurement of toxic metal and iodine; Exploring useful microorganisms in the mesopelagic layer