Objective
ArCSⅡ: Arctic Challenge for SustainabilityⅡ ; Observational study of the Arctic environmental changes: Pacific-Arctic interaction, biogeochemical transport, mixing and marine ecosystem ; Research on sea ice observation technology for the purpose of understanding environmental changes in the Arctic ocean ; Ship-borne observations of trace gases/aerosols over the Arctic ; Distribution and abundance of microplastics in the Arctic Ocean ; Observation of air-sea-wave-ice interaction in the Marginal Ice Zone ; Analysis of Arctic fish communities using environmental DNA ; Halocene Arctic Palaeoclimatology and Palaeoceanography Investigation ; Study on nutrient transport by Summer Pacific Water ; Ship-board observations of atmospheric greenhouse gases and related species in the Arctic ocean and the western North Pacific ; Observation of water vapor isotope in the Arctic