Researcher Bioelement Dynamics Research Group Biogeochemistry Research Center Research Institute for Marine Resources Utilization Address: Japan Agency for Marine-Earth Science and Technology, 2-15 Natsushima-Cho, Yokosuka, 237-0061, JAPAN yoshikawac_AT_jamstec.go.jp Publication Links:   Google Scholar   research map

Research Interests

• A study of the marine nitrogen cycle by using a marine nitrogen isotope model
• A study of the marine nitrogen cycle by using nitrogen isotopic ratios of nitrate and chlorophylls
• Development of nitrogen isoscapes in the ocean by using a marine nitrogen isotope model

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Education

2006

Ph.D. Graduate School of Environmental Earth Science, Hokkaido University

Title of thesis: “Study on the Marine Nitrogen Cycle in the Western and Central Equatorial Pacific and the Sea of Okhotsk using the Nitrogen Isotopic Ratio”

2001

M.S. Graduate School of Environmental Earth Science, Hokkaido University

1999

B.S. Department of Education, Nara University of Education

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Research and Professional Experiences

2020-Present

Researcher at Biogeochemistry Research Center, JAMSTEC

2014-Present

Visiting Scientist, National Institute for Environmental Studies

2019-2021

Visiting Fellow, Princeton University

2019-2020

Research Scientist at Biogeochemistry Program, JAMSTEC

2014-2019

Research Scientist at Department of Biogeochemistry, JAMSTEC

2013-2014

Project Scientist, Research Institute for Global Change, JAMSTEC

2010-2013

Global COE assistant professor, Tokyo Institute of Technology

2007-2010

JSPS Research fellow, Tokyo Institute of Technology

2007-2008

Visiting Scientist, University of Maryland Center for Environmental Science

2006-2007

Postdoctoral Researcher, Frontier Research Center for Global Change/ JAMSTEC

2003-2006

Research Assistant, Frontier Research Center for Global Change/ JAMSTEC

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Awards

2011

The Geochemical Society of Japan Award for Young Researchers

2002

Best Poster Presentation Award at the Geochemical Society of Japan