Makoto Sampei

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About

Dr. Makoto Sampei is a pioneering biological oceanographer whose research has fundamentally reshaped our understanding of Arctic marine ecosystems. His primary focus lies in phytoplankton ecology, polar ocean biogeochemistry, and the impacts of climate change on high-latitude primary production. Dr. Sampei’s most transformative contribution came with his landmark 2020 study, “Arctic mid-winter phytoplankton growth revealed by autonomous profilers,” which has garnered 68 citations. This work shattered the long-held paradigm that phytoplankton remain dormant during the polar night, demonstrating through innovative autonomous profiler data that significant growth occurs even under sea ice in mid-winter. By challenging the assumption that sufficient irradiance requires melting snow and ice, he revealed a previously hidden engine of Arctic productivity. This finding has profound implications for carbon cycling and food web dynamics in a rapidly warming Arctic. Dr. Sampei’s use of cutting-edge autonomous technology exemplifies his commitment to observational breakthroughs, making him a leading voice in polar oceanography and a vital researcher for understanding our changing planet.