2025 At-sea opportunity During 40 days between March and May 2025, the JAMSTEC GO-SHIP P04W expedition will traverse the western end of 10N line in the tropical northwest Pacific Ocean, observing a variety of Essential Ocean Variables (EOVs), including temperature, salinity, oxygen, major nutrients, dissolved inorganic carbon, and microbial communities. This expedition will contribute to the GO-SHIP observation network, which …