Takamasa Tsubouchi's picture

Takamasa Tsubouchi

Postdoctoral fellow
  • E-mailTakamasa.Tsubouchi@uib.no
  • Phone+47 55 58 26 21+47 902 21 065
  • Visitor Address
    Allegt. 70
  • Postal Address
    Postboks 7803
    5020 BERGEN

I am interested in the Ocean role of the climate and its physical mechanisms.

In particular,

  • Horizontal and vertical ocean circulation in the Nordic Seas
  • Arctic Ocean heat and freshwater budgets
  • Physical controls on ocean biogeochemistry
  • Spatial structure and temporal variability of Subtropical Mode Water in the world ocean
Academic article
  • Forryan, Alexander; Bacon, Sheldon; Tsubouchi, Takamasa; Torres-Valdes, Sinhue; Garabato, Alberto C. Naveira. 2019. Arctic freshwater fluxes: sources, tracer budgets and inconsistencies. The Cryosphere. 2111-2131.
  • Mayer, Michael; Tietsche, Steffen; Haimberger, Leo; Tsubouchi, Takamasa; Mayer, Johannes; Zuo, Hao. 2019. An Improved Estimate of the Coupled Arctic Energy Budget . Journal of Climate. 7915-7934.
  • Tsubouchi, Takamasa; Bacon, Sheldon; Aksenov, Yevgeny; Garabato, Alberto C. Naveira; Beszczynska, Agnieszka; Hansen, Edmond; de Steur, Laura; Curry, Beth; Lee, Craig M. 2018. The Arctic Ocean Seasonal Cycles of Heat and Freshwater Fluxes: Observation-Based Inverse Estimates. Journal of Physical Oceanography.

More information in national current research information system (CRIStin)


  • 2019: M. Mayer, S. Tietsche, L. Haimberger, T. Tsubouchi, J. Mayer, H. Zuo: An improved estimate of the coupled Arctic energy budget, J. Climate, doi.org/10.1175/JCLI-D-19-0233.1.
  • 2019: A. Forryan, S. Bacon, T. Tsubouchi, S. Torres-Valdés, and A. C. Naveira Garabato: Arctic freshwater fluxes: sources, tracer budgets and inconsistencies, The Cryosphere,https://doi.org/10.5194/tc-13-2111-2019.
  • 2018: T. Tsubouchi, S. Bacon, A. Naveira-Garabato, Y. Aksenov, A. Beszczynska-Möller, E. Hansen, L. de Steur, B. Curry, C. Lee: The Arctic Ocean seasonal cycles of heat and freshwater fluxes: observation-based inverse estimates, J. Phys. Oceanogr. doi:10.1175/JPO-D-17-0239.1. 
  • 2017: M. Pietschnig, M. Mayer, T. Tsubouchi, A. Storto, S. Stichelberger, L. Haimberger: Volume and temperature transports through the main Arctic Gateways: A comparative study between an ocean reanalysis and mooring-derived data, Ocean Sci. Discuss.  doi:10.5194/os-2017-98.
  • 2016: T. Tsubouchi, T. Suga, K. Hanawa: Comparison study of Subtropical mode waters in the world ocean, Frontiers in Marine Science, 3:270. doi:10.3389/fmars.2016.00270.
  • 2016: S. Torres-Valdes, T. Tsubouchi, E. Davey, I. Yashayaev, S. Bacon: Relevance of dissolved organic nutrients for the Arctic Ocean nutrient budget, Geophys. Res. Lett. 
doi:10.1002/2016GL069245. *AGU research spotlight paper.
  • 2014: T. Tsubouchi: Assembling the Arctic Ocean boundary monitoring array, Data Science Journal, 13, 72-78p.
  • 2014: G. MacGilchrist, A. Naveira-Garabato, T. Tsubouchi, S. Bacon, S. Torres-Valdes, K. Azetsu-Scott: Arctic Ocean carbon sink, Deep Sea Res., 86, doi:10.1016/j.dsr.2014.01.002.
  • 2013: S. Torres-Valdes, T. Tsubouchi, S. Bacon, A. Naveira-Garabato, R. Sanders, F. McLaughlin, B. Petrie, G. Kattner, K. Azetsu-Scott, T. Whitledge: Export of nutrients from the Arctic Ocean, J. Geophys. Res., 118, doi:10.1002/jgrc.20063. *AGU research spotlight paper.
  • 2012: T. Tsubouchi, S. Bacon, A. Naveira-Garabato, Y. Aksenov, S. Laxon, E. Fahrbach, A. Beszczynska-Möller, E. Hansen, C. Lee, R. Ingvaldsen: The Arctic Ocean in summer: a quasi-synoptic inverse estimate of boundary fluxes and water mass transformation, J. Geophys. Res., 117, doi:10.1029/2011JC007174.
  • 2012: M. Palmer, D. Gomis, M. Flexas, G. Jorda, L. Jullion, T. Tsubouchi, A. Naveira-Garabato: Water mass pathways and transports over the South Scotia Ridge west of 50W, Deep Sea Res., 59, 8-24.
  • 2010: T. Tsubouchi, T. Suga, K. Hanawa: Indian Ocean Subtropical Mode Water: its water characteristics and spatial distribution, Ocean Science, 6, 41-50.
  • 2007: T. Tsubouchi, T. Suga, K. Hanawa: Three types of South Pacific Sub- tropical Mode Water: The relation to the large-scale circulation of the south Pacific subtropical gyre and their temporal variability, J. Phys. Oceanogr., 37, 2478-2490.


  • 2005-2008: Ph.D at Department of Geophysics, Graduate School of Science, Tohoku University, Japan.
  • 2003-2005: M.S. at Department of Geophysics, Graduate School of Science, Tohoku University, Japan.
  • 1999-2003: B.S. at Department of Geophysics, Faculty of Science, Tohoku University, Japan.


  • 2017-2020: Postdoctoral researcher, under the Bergens forskningsstiftelse project, Overturning in the Nordic Seas (OVENS) at Geophysical Institute, University of Bergen in Norway.
  • 2015-2017: Marie Skłodowska-Curie research fellow, ARCGATE: Maximizing the potential of Arctic Ocean Gateway array at the Alfred Wegener Institute for Polar and Marine Research, Bremerhaven, Germany.
  • 2011-2015: Postdoctoral researcher under NERC consortium project, The Environment of the Arctic: Climate, Ocean and Sea Ice (TEA-COSI) project at National Oceanography Centre, Southampton, UK.
  • 2008-2011: Postdoctoral researcher under NERC Arctic-IPY consortium project, Arctic Synoptic Basin-wide Observations (ASBO) at National Oceanography Centre, Southampton, UK.

OVENS: Overturning in the Nordic Seas

The aim of the OVENS project is to fundamentally advance our understanding of the coupled ocean-atmosphere climate system in the Nordic Seas and to integrate and quantify this insight within the framework of the Atlantic Meridional Overturning Circulation in the present and future climates. In order to contribute the project, I will quantify horizontal and vertical ocean circulation in the Nordic Seas and define its role in the climate system primary analysing historical hydrographic data.