Oceanographic and biochemical data obtained during cruise SO266 from 15.10.2018 to 18.11.2018 from Kaohsiung (Taiwan) to Kaohsiung (Taiwan) . A Seabird CTD Model 9plus recorded oceanographic data. The CTD comprised conductivity, temperature, and pressure sensors as well as a SBE 43 oxygen sensor and a WET labs ECO FLNTURTD fluorometer and turbidity sensor. According to the manufacturers, the accuracy of the conductivity, temperature, pressure, and oxygen was ± 0.0003 S m-1, ± 0.0002 °C, ± 0.02%, and ± 2% of saturation, respectively. The difference between the two salinity and temperature sensors were 0.0069 and 0.0010 °C, respectively. The WETLabs FLNTU measured chlorophyll fluorescence (ChlF, λ excitation=470 nm, λ emission=695 nm) with a sensitivity of 0.025 µg l-1.