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Interaction between climate system and polar mesocyclones over the Japan Sea in winter and its future change

Research Project

Project/Area Number 17K14390
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Meteorology/Physical oceanography/Hydrology
Research InstitutionJapan, Meteorological Research Institute (2018-2019)
The University of Tokyo (2017)

Principal Investigator

Watanabe Shunichi  気象庁気象研究所, 気象予報研究部, 研究官 (60785195)

Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2018: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2017: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Keywords渦状擾乱 / ポーラーメソサイクロン / 統計解析 / 気候変動 / 日本海 / 気象学
Outline of Final Research Achievements

The statistical characteristics including long-term variability and future change of polar mesocyclones over the Sea of Japan were analysed using high-resolution dataset and a new objective tracking algorithm. Polar mesocyclones were decreased after 1987 due to a regime shift in the polar region. The number of the polar mesocyclone is associated with the global climate, where the number increases in the climate situation that is conductive to cold air outbreak over Japan. In the future climate, the number of the polar mesocyclone is likely to decrease due to the weakening of the winter monsoon.

Academic Significance and Societal Importance of the Research Achievements

本研究ではこれまで十分に調べられてこなかった、日本周辺の渦状擾乱について長期的な解析を行った。日本周辺の海域は、海面から大気に熱や水蒸気が大量に供給されることより、気候系に対する影響も大きい。本研究で得られた結果は今後渦状擾乱と気候系の関連を調査するうえで、基盤となる知見である。また、本研究の手法を今後日本海以外の海域に適用することで、世界的な渦状擾乱の研究の促進が期待される。渦状擾乱は、気象災害をもたらすなど社会生活と関連が深く、その長期的傾向や将来変化は社会にとっても重要な情報である。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (8 results)

All 2020 2018 2017 Other

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

  • [Int'l Joint Research] University of East Anglia(英国)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] University of Bergen(ノルウェー)

    • Related Report
      2019 Annual Research Report
  • [Journal Article] Polar Lows2020

    • Author(s)
      Annick Terpstra and Shun-ichi Watanabe
    • Journal Title

      Oxford Research Encyclopedia of Climate Science

      Volume: -

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Composite analysis of polar mesocyclones over the western part of the Sea of Japan2018

    • Author(s)
      Watanabe, S.I., H. Niino, and W. Yanase
    • Journal Title

      Monthly Weather Review

      Volume: 146 Issue: 4 Pages: 985-1004

    • DOI

      10.1175/mwr-d-17-0107.1

    • Related Report
      2018 Research-status Report 2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] Structure and Environment of Polar Mesocyclones over the Northeastern Part of the Sea of Japan2017

    • Author(s)
      Watanabe Shun-ichi I.、Niino Hiroshi、Yanase Wataru
    • Journal Title

      Monthly Weather Review

      Volume: 145 Issue: 6 Pages: 2217-2233

    • DOI

      10.1175/mwr-d-16-0342.1

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Presentation] The Role of Coastline and Orography in the Formation of Convergence Zones in Cold Air Outbreaks2018

    • Author(s)
      Shun-ichi I. Watanabe, Hiroshi Niino, Thomas Spengler
    • Organizer
      14th European polar low working group meeting
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Formation of Convergence Zones in Cold Air Outbreaks2018

    • Author(s)
      Shun-ichi I. Watanabe, Hiroshi Niino, Thomas Spengler
    • Organizer
      POLAR 2018
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] DSJRA55を用いた冬季日本海上の渦状擾乱の長期変動の解析2018

    • Author(s)
      渡邉俊一
    • Organizer
      日本気象学会2018年度春季大会
    • Related Report
      2017 Research-status Report

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Published: 2017-04-28   Modified: 2021-02-19  

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