Objective
Study of distribution and optical characteristics of ice/water clouds and marine aerosols ; Continuous surface meteorological measurements as a basic dataset. ; Study of primary productivity observed by remotely sensing data of ocean color. ; Air-sea gas exchange rate from oxygen-17 anomaly of dissolved oxygen ; Rain Sampling for Stable Isotopes ; Standardisation of marine geophysical data and its application to the ocean floor geodynamics studies ; Studies of zooplankton community in the time series observation station, K2 ; Characteristics of spatial variation of aerosol physical properties over the ocean measured by solar aureole ; Genetic diversity of planktonic foraminifera in northern Northwest Pacific and its relationship to Quaternary paleo-environmental changes. ; Studies on the transport and variation of the North Pacific western subarctic water-masses