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Seasonal predictability based on multi-model intercomparison

Research Project

Project/Area Number 18K03749
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 17020:Atmospheric and hydrospheric sciences-related
Research InstitutionJapan, Meteorological Research Institute

Principal Investigator

Imada Yukiko  気象庁気象研究所, 気候・環境研究部, 主任研究官 (50582855)

Project Period (FY) 2018-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2018: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords大気海洋結合大循環モデル / エルニーニョ・南方振動 / 季節予測 / マルチモデル比較 / 太平洋数十年規模変動 / 季節予測システム / ENSO予測 / 大気海洋結合モデル / ENSO / モデル間相互比較
Outline of Final Research Achievements

Although the skill of climate models in predicting ENSO has improved dramatically in recent years, there are still a few cases where case-specific ENSO development is significantly underpredicted, and the reasons for this vary from case to case, model to model, and method to method. In this study, I conducted a multi-model seasonal predictability study, which has been considered difficult in the past, to explore the key physical processes for prediction. Comparison of seasonal hindcasts using the two state-of-the-art coupled atmosphere-ocean models suggested that the ability to predict multi-decadal variability originating in the South Pacific Ocean affects ENSO forecasting skills. The representation of eddies in the tropical ocean is also shown to be a key factor in ENSO prediction.

Academic Significance and Societal Importance of the Research Achievements

熱帯太平洋に発生するエルニーニョ現象(ENSO)は、異常気象予測の鍵となる現象である。ENSOを数か月前から予測することで、異常気象の発生確率を知り、備えることができる。この目的から、日本では気候モデルを用いた季節予報が定期的に発表されている。一方で、季節予測の技術は飽和しつつあり、新たなブレークスルーが求められている。本研究では、複数の季節予測モデルを用いて個別の事例を丁寧に調べることで、現象の多様性やモデルの多様性を考慮した新しいアプローチに挑戦した。得られる知見は、季節予測技術を次の段階に進めるためのマイルストーンになると期待される。

Report

(6 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (27 results)

All 2023 2022 2021 2020 2019 2018

All Journal Article (8 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 8 results,  Open Access: 7 results) Presentation (19 results) (of which Int'l Joint Research: 7 results,  Invited: 4 results)

  • [Journal Article] WMO Global Annual to Decadal Climate Update: A Prediction for 2021-252022

    • Author(s)
      Hermanson, L., ...Y. Imada, et al.(45人中28番目)
    • Journal Title

      Bull. Amer. Meteor. Soc.

      Volume: 103 Issue: 4 Pages: E1117-E1129

    • DOI

      10.1175/bams-d-20-0311.1

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Potential Seasonal Predictability of the Risk of Local Rainfall Extremes Estimated Using High-Resolution Large Ensemble Simulations.2021

    • Author(s)
      Imada, Y. and H. Kawase
    • Journal Title

      Geophysical Research Letters

      Volume: 48 Issue: 24

    • DOI

      10.1029/2021gl096236

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Advanced event attribution for the regional heavy rainfall events2020

    • Author(s)
      Imada, Y., H. Kawase, M. Watanabe, M. Arai, and I. Takayabu
    • Journal Title

      npj Climate and Atmospheric Science

      Volume: 3 Issue: 1 Pages: 37-37

    • DOI

      10.1038/s41612-020-00141-y

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Seasonal to decadal predictions with MIROC6: Description and basic evaluation.2020

    • Author(s)
      Kataoka, T., H. Tatebe, H. Koyama, T. Mochizuki, K. Ogochi, H. Naoe, Y. Imada, H. Shiogama, M. Kimoto, M. Watanabe
    • Journal Title

      J. Advances in Modeling Earth Systems

      Volume: 12 Issue: 12 Pages: 1-25

    • DOI

      10.1029/2019ms002035

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Impact of air-sea coupling on the probability of occurrence of heat waves in Japan.2020

    • Author(s)
      Hasegawa, A., Y. Imada, H. Shiogama, M. Mori, H. Tatebe, M. Watanabe
    • Journal Title

      Prog. Earth Planet Sci.

      Volume: 7 Issue: 1 Pages: 78-78

    • DOI

      10.1186/s40645-020-00390-8

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] The July 2018 High Temperature Event in Japan Could Not Have Happened without Human-Induced Global Warming2019

    • Author(s)
      Yukiko Imada, Masahiro Watanabe, Hiroaki Kawase, Hideo Shiogama, and Miki Arai
    • Journal Title

      SOLA

      Volume: 15A Issue: 0 Pages: 8-12

    • DOI

      10.2151/sola.15A-002

    • NAID

      130007661338

    • ISSN
      1349-6476
    • Related Report
      2019 Research-status Report 2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Contribution of Historical Global Warming to Local‐Scale Heavy Precipitation in Western Japan Estimated by Large Ensemble High‐Resolution Simulations2019

    • Author(s)
      Kawase H.、Imada Y.、Sasaki H.、Nakaegawa T.、Murata A.、Nosaka M.、Takayabu I.
    • Journal Title

      Journal of Geophysical Research: Atmospheres

      Volume: 124 Issue: 12 Pages: 6093-6103

    • DOI

      10.1029/2018jd030155

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Tropical rainfall predictions from multiple seasonal forecast systems.2019

    • Author(s)
      Michel Dequ, Tina Dippe, Nick Dunstone, David Fereday, Richard G. Gudgel, Richard J. Greatbatch, Leon Hermanson,Yukiko Imada, Shipra Jain, Arun Kumar, Craig MacLachlan, William Merryfield, Wolfgang A. Muller, Hong‐Li Ren, Doug Smith, Yuhei Takaya, Gabriel Vecchi, Xiaosong Yang
    • Journal Title

      International Journal of Climatology

      Volume: 39 Issue: 2 Pages: 974-988

    • DOI

      10.1002/joc.5855

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Decadal prediction intercomparison plan in Japan.2023

    • Author(s)
      Imada, Y., T. Kataoka, T. Iwakiri, S. Hirahara, Y. Takaya, M. Ishii, T. Doi, Y. Morioka, and T. Tatebe
    • Organizer
      DCPP panel meeting
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Impact of tropical instability waves on large-scale atmospheric circulation.2022

    • Author(s)
      Imada, Y., H. Tsujino, G. Yamanaka, and S. Urakawa
    • Organizer
      JpGU2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 高解像度のラージアンサンブルシミュレーションによって見積もられる局所的な大雨の発生確率の季節予測可能性.2022

    • Author(s)
      今田由紀子
    • Organizer
      2021年度長期予報研究連絡会研究会・季節予報技術の展望
    • Related Report
      2021 Research-status Report
  • [Presentation] 高解像度のラージアンサンブルシミュレーションによって見積もられる豪雨の発生頻度の季節予測可能性2021

    • Author(s)
      今田由紀子
    • Organizer
      日本気象学会2021年度秋季大会
    • Related Report
      2021 Research-status Report
  • [Presentation] Long-term potential predictability of regional extreme events in East Asia estimated from a high-resolution large ensemble.2021

    • Author(s)
      Yukiko Imada
    • Organizer
      WCRP Workshop on Extremes in Climate Prediction Ensembles(ExCPEns)
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Potential predictability of regional extreme events associated with large-scale variations in the tropical ocean.2021

    • Author(s)
      Yukiko Imada
    • Organizer
      JpGU2021
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Long-term potential predictability of regional extreme events in East Asia estimated from a high-resolution large ensemble2021

    • Author(s)
      Yukiko Imada
    • Organizer
      WCRP workshop on attribution of multi-annual to decadal changes in the climate system
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Potential Predictability of Extremes Estimated by Large Ensemble Simulations.2020

    • Author(s)
      Yukiko Imada
    • Organizer
      AGU 2020
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Predictability of two flavors of El Nino and statistical downscaling by SVD analysis using the MIROC5 seasonal prediction system2020

    • Author(s)
      Imada, Y., H. Tatebe, M. Ishii, Y. Chikamoto, M. Mori, M. Arai, S. Kanae, M. Watanabe, and M. Kimoto
    • Organizer
      JpGU-AGU Joint Meeting 2020
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 2018年7月の猛暑と地球温暖化2019

    • Author(s)
      今田由紀子, 渡部雅浩, 川瀬宏明, 塩竈秀夫, 荒井美紀
    • Organizer
      日本気象学会2019年春季大会
    • Related Report
      2019 Research-status Report
  • [Presentation] Impact of tropical Pacific sea surface temperature on the regional heavy rainfall events in Japan.2019

    • Author(s)
      Imada Y., H. Kawase, M. Watanabe, and I. Takayabu
    • Organizer
      JpGU2019
    • Related Report
      2019 Research-status Report
  • [Presentation] 熱帯不安定波が大気大循環に与える影響2019

    • Author(s)
      今田由紀子, 辻野 博之, 山中 吾郎, 浦川 昇吾
    • Organizer
      日本気象学会2019年秋季大会
    • Related Report
      2019 Research-status Report
  • [Presentation] 2018年7月の豪雨や猛暑に対する 地球温暖化の影響2018

    • Author(s)
      今田由紀子
    • Organizer
      研究会「長期予報と大気大循環」2018年夏の異常な天候と大気循環, 長期予報研究連絡会
    • Related Report
      2018 Research-status Report
  • [Presentation] 高解像度熱帯海洋ネストモデルを組み込んだ地球システムモデルMRI-ESM1によるENSO予測2018

    • Author(s)
      今田由紀子
    • Organizer
      日本海洋学会2018年秋季学会
    • Related Report
      2018 Research-status Report
    • Invited
  • [Presentation] 2017年7月九州北部豪雨に対する地球温暖化の寄与2018

    • Author(s)
      今田由紀子
    • Organizer
      日本気象学会2018年秋季大会
    • Related Report
      2018 Research-status Report
  • [Presentation] 高解像度熱帯海洋ネストモデルを組み込んだ地球システムモデルによる気候シミュレーション2018

    • Author(s)
      今田由紀子
    • Organizer
      地球惑星科学連合2018年大会
    • Related Report
      2018 Research-status Report
    • Invited
  • [Presentation] 高解像度熱帯海洋ネストモデルを組み込んだ地球システムモデルによるENSO予測2018

    • Author(s)
      今田由紀子
    • Organizer
      地球惑星科学連合2018年大会
    • Related Report
      2018 Research-status Report
  • [Presentation] Influence of Subsurface Advection in the Off-Equatorial South Pacific Ocean on El Nino Evolution2018

    • Author(s)
      Yukiko Imada
    • Organizer
      AOGS2018
    • Related Report
      2018 Research-status Report
  • [Presentation] ENSO prediction using an earth system model incorporating a high-resolution tropical ocean nesting model.2018

    • Author(s)
      Yukiko Imada
    • Organizer
      International Conference on Subseasonal to Decadal Prediction, World Climate Research Programme,
    • Related Report
      2018 Research-status Report

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Published: 2018-04-23   Modified: 2024-01-30  

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