Objective
Tropical Ocean Climate Study ; The reconstruction of the ocean environmental change in the Quaternary period and geomagnetism strength change over the western equatorial Pacific ; Estimation of the primary productivity by the dissolved O2 isotope of the intermediate-to-deep water ; Study on oceanic circulation, heat and fresh water transports, and their changes over the Pacific Ocean, and comprehensive study for physics, chemical and biology process over north-western Pacific, using Argo floats ; Lidar observations of clouds and aerosols ; Atmospheric aerosol and gas observations ; Study on formation process of the Lyra Basin ; Validation of GOSAT products over sea using a ship-borne compact system for measuring atmospheric trace gas column densities ; Aerosol optical characteristics measured by ship-borne sky radiometer ; Study on standardization of ocean geophysics observation data and application to ocean bottom dynamics