Research Interests 【 display / non-display 】

Research Interests 【 display / non-display 】

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Research Areas 【 display / non-display 】

Research Areas 【 display / non-display 】

Papers 【 display / non-display 】

Papers 【 display / non-display 】

• Influence of North Pacific subtropical mode water variability on the surface mixed layer through the heaving of the upper thermocline on decadal timescales

  Kobashi, F., N. Usui, N. Akimoto, N. Iwasaka, T. Suga and E. Oka , 2023.01

  Journal of Oceanography

  DOI

• Decadal-scale variability of the North Pacific subtropical mode water and its influence on the pycnocline observed along 137°E

  Kobashi, F., T. Nakano, N. Iwasaka, and T. Ogata , 2021.06

  Journal of Oceanography

  DOI

  OACIS Paper URL

• Nutrient and phytoplankton variability in the tropical and subtropical western North Pacific simulated using OFES2

  Ogata, T., H. Aiki, F. Kobashi, and Y. Sasai , 2025.08

  Journal of Oceanography

  DOI

• Relationship between temperature and volume variations of the North Pacific Central Mode Water contrasting with Subtropical Mode Water

  Iwasaka, N., F. Kobashi, Y. Kawai and H. Fujishima , 2025.07

  Journal of Oceanography

  DOI

  OACIS Paper URL

• Trade-offs associated with the cloud masking for SGLI sea surface temperature

  Kurihara, Y., R. Shimada, E. Yoshizawa and F. Kobashi , 2025.07

  IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing

  DOI

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Grant-in-Aid for Scientific Research 【 display / non-display 】

Grant-in-Aid for Scientific Research 【 display / non-display 】

• Variations of the ocean surface stratification and their mechanisms with a focus on the role of mode waters

  Project Period (FY)： 2025/04  -  2028/03  Investigator(s): 小橋 史明

  Grant-in-Aid for Scientific Research(C)  Principal Investigator  25K07397 

• Integrated Understanding of Ocean Variability around Japan

  Project Period (FY)： 2024/04  -  2029/03  Investigator(s): 杉本 周作

  Grant-in-Aid for Transformative Research Areas(A) (Planned Research)  Co-Investigator  24H02221 

• Decadal variations of the North Pacific subtropical mode water and their influence on surface temperature and climate

  Project Period (FY)： 2022/04  -  2025/03  Investigator(s): 小橋史明

  Grant-in-Aid for Scientific Research(C)  Principal Investigator  22K03716 

• Hybrid ocean observation: Circulation variation in the Kuroshio Extension area and its influence on atmosphere and biogeochemistry

  Project Period (FY)： 2019/06  -  2024/03  Investigator(s): 岡 英太郎

  Grant-in-Aid for Scientific Research on Innovative Areas (Planned Research)  Co-Investigator  19H05700 

• Change in the North Pacific subtropical gyre due to global warming and its climatic influence

  Project Period (FY)： 2019/04  -  2022/03  Investigator(s): Kobashi Fumiaki

  Grant-in-Aid for Scientific Research(C)  Principal Investigator  19K03969 

  Analyzing historical hydrographic observations and large ensemble data of the past climate simulation based on climate models, we examine the change in the North Pacific subtropical thermocline and mode waters. We found that the main thermocline becomes deeper in the area off the North America continent and along the southern side of the subtropical gyre, which suggests that the lower subtropical gyre has weakened due to global warming. In addition, we found changes in the thermocline in association with subtropical mode water and central mode water and showed the importance of mode waters especially in the changes in the surface temperature.

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Lesson Subject 【 display / non-display 】

Lesson Subject 【 display / non-display 】