Objective

Our research interests focus on the marine carbon cycle and aim to understand its natural variability and anthropogenic perturbations such as ocean acidification and deoxygenation. In particular, we have been developing the methods of high-precision measurements of biogeochemical parameters such as CO₂ system variables, dissolved oxygen and so on. On the basis of the high-quality data of measurements, we are analyzing the seasonal, inter-annual to multi-decadal variability and their controlling physical and biogeochemical processes in surface layers and in the interior of the vast global oceans as well as in the North Pacific including the regions in the vicinity of Japan.

Member

Research

MRI Research subject

• 気候システム及び炭素・生物地球化学循環の解明・評価・予測に関する研究
• Sub-theme 4: 海洋の炭素・生物地球化学循環の実態評価・変化予測

Grant-in-Aid for Scientific Research

• Grant-in-Aid for Transformative Research Areas: "ハビタブル日本：島嶼国日本の生存基盤をなす大気・海洋環境の持続可能性"
• A02-4 "CO2吸収ホットスポットにおける海洋循環と生物生産・分解" (PI)

Environment Research and Technology Development Fund

• S-22「気候変動緩和に向けた温室効果ガスおよび大気質関連物質の監視に関する総合的研究」
• Theme 1「観測に基づくGHGおよび関連物質の地表面フラックス早期評価システムの構築」
• Sub-theme 3「現場観測と高解像度海洋モデルによる大気・海洋間CO2フラックスの評価向上 (Sub-theme PI)

Other research activities (including past projects)

• Internatinal collaboration (Links to external website)
  • IOCCP: International Ocean Carbon Coordination Project
  • GOOS: Global Ocean Observing System
  • GO-SHIP: The Global Ocean Ship-Based Hydrographic Investigations Program
  • IMBeR: Intergrated Marine Biosphere Research
• Pacific CO₂ system variables data synthesis (Links to external website)
  • PACIFICA: Pacific Ocean Interior Carbon
  • GLODAP: GLobal Ocean Data Analysis Project for Carbon
  • SOCAT: The Surface Ocean CO₂ Atlas
  • RECCAP: Regional Carbon Cycle Assessment and Processes