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Elucidation of the Beaufort Gyre and Oceanic warming in the Arctic Ocean during winter

Research Project

Project/Area Number 26870203
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Environmental impact assessment
Environmental dynamic analysis
Research InstitutionTokyo University of Marine Science and Technology

Principal Investigator

Mizobata Kohei  東京海洋大学, 学術研究院, 助教 (80586058)

Project Period (FY) 2014-04-01 – 2017-03-31
Project Status Completed (Fiscal Year 2016)
Budget Amount *help
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2016: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2015: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2014: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywords北極海 / ボーフォート循環 / 海洋温暖化 / 海面高度計 / 衛星リモートセンシング / 海氷 / 海面力学高度 / 衛星高度計
Outline of Final Research Achievements

Wintertime monthly dynamic ocean topography (DOT) and geostrophic velocity were derived from CryoSat-2/SIRAL (Radar Altimeter). Investigation of DOT comparing with sea surface wind and sea ice motion shows that the Beaufort Gyre responds to the variability of sea surface stress due to sea surface wind and sea ice motion, as Barotropic response. Also our analysis revealed that strong wind field resulted from intensified Beaufort High sometimes induces the westward expand of the Beaufort Gyre. The spatio-temporal variability of the Beuafort Gyre during winter alters the pathway of the warm Pacific Summer Water, which contributes to sea ice reduction. Our results will be helpful for understanding the fate of Arctic Sea ice.

Report

(4 results)
  • 2016 Annual Research Report   Final Research Report ( PDF )
  • 2015 Research-status Report
  • 2014 Research-status Report
  • Research Products

    (7 results)

All 2016 2015 2014 Other

All Journal Article (2 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results,  Acknowledgement Compliant: 2 results) Presentation (3 results) (of which Int'l Joint Research: 1 results) Remarks (2 results)

  • [Journal Article] Wintertime variability of the Beaufort Gyre in the Arctic Ocean derived from CryoSat-2/SIRAL observations2016

    • Author(s)
      Mizobata, K., E. Watanabe, and N. Kimura
    • Journal Title

      Journal of Geophysical Research

      Volume: 121 Issue: 3 Pages: 1685-1699

    • DOI

      10.1002/2015jc011218

    • Related Report
      2016 Annual Research Report 2015 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] The Deep Freeze2014

    • Author(s)
      Mizobata, K.
    • Journal Title

      International Innovation

      Volume: 149 Pages: 23-25

    • Related Report
      2014 Research-status Report
    • Acknowledgement Compliant
  • [Presentation] Intra-seasonal variability of the Beaufort Gyre and its impact on the fate of Arctic Sea ice in the Pacific Sector of the Arctic Ocean2015

    • Author(s)
      Mizobata K. and N. Kimura
    • Organizer
      European Geoscience Union General Assembly 2015
    • Place of Presentation
      Vienna, Austria
    • Year and Date
      2015-04-14
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research
  • [Presentation] 冬季北極海の海洋循環と海氷厚分布の時空間変動2015

    • Author(s)
      溝端浩平(海洋大院)・木村詞明 (極地研/東大院新領域)
    • Organizer
      日本海洋学会春季大会
    • Place of Presentation
      東京海洋大学
    • Year and Date
      2015-03-22
    • Related Report
      2014 Research-status Report
  • [Presentation] Intra-seasonal variability of the Beaufort Gyre derived from the Cryosat-2/SIRAL measurements2014

    • Author(s)
      Mizobata K. and N. Kimura(NIPR)
    • Organizer
      Arctic Change 2014
    • Place of Presentation
      Shaw center, オタワ, カナダ
    • Year and Date
      2014-12-10
    • Related Report
      2014 Research-status Report
  • [Remarks] CryoSat-2 / SIRAL Dynamic Ocean Topography

    • URL

      http://www2.kaiyodai.ac.jp/~mizobata/cs2siral/

    • Related Report
      2016 Annual Research Report
  • [Remarks] 溝端浩平/東京海洋大学

    • URL

      http://www2.kaiyodai.ac.jp/~mizobata/

    • Related Report
      2016 Annual Research Report

URL: 

Published: 2014-04-04   Modified: 2018-03-22  

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