Skilled research scientist with a doctorate in biological oceanography. Acquired expert knowledge of fluorometer, high-performance liquid chromatography, flow cytometry and mass spectrometer to estimate phytoplankton pigments, biomass and primary production. Experienced to join the cruises some dozen times to understand the biogeochemical cycles in the northwestern Pacific Ocean, equatorial Pacific Ocean, East China Sea and Indonesian coastal. Also, has experience in managing the cruise a few times as well as having collaboration in joint research at the international level with the Indonesian institute.