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Challenges in developing a method for climate system assessment based on its hierarchical structure

Planned Research

Project AreaChallenge to the new generation cloud-resolving climate simulation
Project/Area Number 20H05730
Research Category

Grant-in-Aid for Transformative Research Areas (B)

Allocation TypeSingle-year Grants
Review Section Transformative Research Areas, Section (II)
Research InstitutionKobe University

Principal Investigator

Kajikawa Yoshiyuki  神戸大学, 都市安全研究センター, 特命教授 (20572431)

Co-Investigator(Kenkyū-buntansha) 山浦 剛  国立研究開発法人理化学研究所, 計算科学研究センター, 技師 (00632978)
Chen YingWen  東京大学, 大気海洋研究所, 特任研究員 (00637704)
横井 覚  国立研究開発法人海洋研究開発機構, 地球環境部門(大気海洋相互作用研究センター), グループリーダー (40431902)
末松 環  国立研究開発法人理化学研究所, 計算科学研究センター, 特別研究員 (40872544)
Project Period (FY) 2020-10-02 – 2023-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥25,350,000 (Direct Cost: ¥19,500,000、Indirect Cost: ¥5,850,000)
Fiscal Year 2022: ¥8,190,000 (Direct Cost: ¥6,300,000、Indirect Cost: ¥1,890,000)
Fiscal Year 2021: ¥8,190,000 (Direct Cost: ¥6,300,000、Indirect Cost: ¥1,890,000)
Fiscal Year 2020: ¥8,970,000 (Direct Cost: ¥6,900,000、Indirect Cost: ¥2,070,000)
Keywords気候システム / 階層構造 / 全球気候モデル / 再現性評価
Outline of Research at the Start

本研究は、第6世代全球気候モデル(GCM)を目指す「気候モデル化を目指す雲解像モデルNICAM」と「雲解像モデル化を目指す気候モデルMIROC」の気候シミュレーション結果を、両GCMの得意分野と苦手分野が重なるモンスーン・季節内変動・台風・降水の日変化特性に着目し観測値を交えて比較検討することで、階層構造を伴う気候システムの再現に必要不可欠な物理過程を明らかにすると共に、第6世代GCMを適切に評価するための新しいGCM再現性評価手法を開発し、新たな気候学であるDNA気候学の醸成に貢献する。

Outline of Final Research Achievements

Based on the scientific issues of this project, we analyzed the results of climate experiments of the cloud-resolving model NICAM and the climate model MIROC with the multiple observational data sets and elucidated the essential physical process for better understating and simulating the climate system. The results indicate the importance of reproducing (1) convective cold pools for better simulating diurnal cycle of cumulus convection, (2) background circulation as well as local moist process for better simulation the Madden-Julian Oscillation, and (3) tropical disturbances as well as land-sea thermal condition for better simulating of Monsoon onset. The analysis of tropospheric upper clouds also shows that the response of upper clouds to SSTs differs between NICAM and MIROC depending on the cloud formation process.

Academic Significance and Societal Importance of the Research Achievements

近年、国内外における全球気候モデル(GCM)は水平格子間隔数kmの雲解像モデル(第6世代GCM)が主流となりつつあり、計算機の発達による長期積分により雲解像モデルの気候モデル化が現実的なものとなる。本研究課題で得られた研究成果は、いずれも雲解像モデルと気候モデルの相補的な利用の下に得られた気候システムの理解に本質的な物理過程であり、今後のGCM開発にも貢献する意義は大きい。また、近い将来迎える第6世代GCMの国際的な相互比較に先んじて、その性能評価軸の一端を示したことは、今後のGCM開発・評価の両面からも先駆的である。

Report

(4 results)
  • 2023 Final Research Report ( PDF )
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • Research Products

    (53 results)

All 2024 2023 2022 2021 2020

All Journal Article (9 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 9 results,  Open Access: 9 results) Presentation (44 results) (of which Int'l Joint Research: 23 results,  Invited: 5 results)

  • [Journal Article] Precipitation Diurnal Cycle over Tropical Coastal Regions Represented in Climate Experiments with a Global Cloud-System Resolving Model2024

    • Author(s)
      Yokoi Satoru、Kajikawa Yoshiyuki
    • Journal Title

      SOLA

      Volume: 20 Issue: 0 Pages: 145-151

    • DOI

      10.2151/sola.2024-020

    • ISSN
      1349-6476
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Numerical Study on the Precipitation Concentration over the Western Coast of Sumatra Island2024

    • Author(s)
      Okugawa Ryosuke、Yasunaga Kazuaki、Hamada Atsushi、Yokoi Satoru
    • Journal Title

      Monthly Weather Review

      Volume: 152 Issue: 3 Pages: 689-704

    • DOI

      10.1175/mwr-d-23-0037.1

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Development of Synoptic-Scale Disturbances over the Tropical Western North Pacific Associated with the Boreal Summer Intraseasonal Oscillation and the Interannual Pacific–Japan Pattern2023

    • Author(s)
      SEIKI Ayako、KOSAKA Yu、YOKOI Satoru
    • Journal Title

      Journal of the Meteorological Society of Japan. Ser. II

      Volume: 101 Issue: 2 Pages: 103-123

    • DOI

      10.2151/jmsj.2023-006

    • ISSN
      0026-1165, 2186-9057
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Deceleration of Madden-Julian Oscillation Speed in NICAM AMIP‐Type Simulation Associated With Biases in the Walker Circulation Strength2022

    • Author(s)
      Miura, Hiroaki, Kodama, Chihiro, Takasuka, Daisuke
    • Journal Title

      Geophysical Research Letters

      Volume: 49 Issue: 11

    • DOI

      10.1029/2022gl098628

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Diurnal to intraseasonal precipitation variation around the northwestern coast of Luzon Island: Results from YMC-BSM 2018 field campaign2022

    • Author(s)
      Yokoi, S., Shirooka, R., Yoneyama, K., Cayanan, E. O., and Iglesia, C. O.
    • Journal Title

      Geophysical Research Letters

      Volume: 49 Issue: 9

    • DOI

      10.1029/2022gl098519

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Projection of High Clouds and the Link to Ice Hydrometeors: An Approach Using Long-Term Global Cloud System?Resolving Simulations2022

    • Author(s)
      Chen Ying-Wen、Satoh Masaki、Kodama Chihiro、Noda Akira T.、Yamada Yohei
    • Journal Title

      Journal of Climate

      Volume: 35 Issue: 11 Pages: 3495-3514

    • DOI

      10.1175/jcli-d-21-0150.1

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Changes in the Eastward Movement Speed of the Madden-Julian Oscillation with Fluctuation in the Walker Circulation2022

    • Author(s)
      Suematsu T., and H. Miura
    • Journal Title

      Journal of Climate

      Volume: 35 Issue: 1 Pages: 211-225

    • DOI

      10.1175/jcli-d-21-0269.1

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Why Does Convection Weaken over Sumatra Island in an Active Phase of the MJO?2022

    • Author(s)
      Zhao Ning、Wu Peiming、Yokoi Satoru、Hattori Miki
    • Journal Title

      Monthly Weather Review

      Volume: 150 Issue: 4 Pages: 697-714

    • DOI

      10.1175/mwr-d-21-0251.1

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] The Impact of Diurnal Precipitation over Sumatra Island, Indonesia, on Synoptic Disturbances and its Relation to the Madden-Julian Oscillation2021

    • Author(s)
      SEIKI Ayako、YOKOI Satoru、KATSUMATA Masaki
    • Journal Title

      Journal of the Meteorological Society of Japan. Ser. II

      Volume: 99 Issue: 1 Pages: 113-137

    • DOI

      10.2151/jmsj.2021-007

    • NAID

      130007992428

    • ISSN
      0026-1165, 2186-9057
    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] Estimation of Convective Downdraft Mass Flux and its Contribution to Boundary-layer Moist Static Energy Budget over the Indo-Pacific Warm Pool Using Shipborne Observational Data2024

    • Author(s)
      Yokoi, S., M. Katsumata, Q. Moteki, and K. Yoneyama
    • Organizer
      104th AMS Annual Meeting
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Monsoon onset mechanism and its reproducibility in global climate models2023

    • Author(s)
      Kajikawa, Y.
    • Organizer
      気象学会2023年度秋季大会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] Observational study on interaction between convective systems and boundary-layer thermodynamic processes over the Indo-Pacific warm pool2023

    • Author(s)
      Yokoi, S
    • Organizer
      気象学会2023年度秋季大会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] On the diversity of the Madden-Julian Oscillation and its relationship with the Walker circulation,2023

    • Author(s)
      Suematsu T. , Nakai K., Yoneda. T., Takasuka, D., Jinno, T., Saiki, Y., and Miura, H
    • Organizer
      気象学会2023年度秋季大会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] Reproducibility of precipitation diurnal cycle over tropical coastal regions in climate simulations of a global atmospheric cloud-system resolving model2023

    • Author(s)
      Yokoi, S., and Y. Kajikawa
    • Organizer
      JpGU Meeting 2023
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Estimation of convective downdraft mass flux across atmospheric boundary layer top in the tropical deep convective regime using shipborne observations.2023

    • Author(s)
      Yokoi, S.
    • Organizer
      28th IUGG General Assembly
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Topographic and resolution impact on the convection over the Philippine islands.2023

    • Author(s)
      Kajikawa, Y. and T. Yamaura
    • Organizer
      JpGU Meeting 2023
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 人工衛星および船舶観測データを用いた全球雲解像気候モデルの熱帯沿岸降水日変化再現性の検証2023

    • Author(s)
      横井 覚, 梶川 義幸
    • Organizer
      気象学会2023年度秋季大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Preliminary results from Imaginary DYAMOND3: an aquaplanet cloud-resolving model intercomparison project2023

    • Author(s)
      Tamaki Suematsu, Angel Peinado, Daisuke Takasuka, Ching-Shu Hung, Yoshiyuki Kajikawa, Daniel Klocke, Hiroaki Miura, Hirofumi Tomita
    • Organizer
      CFMIP-GASS 2023
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] What causes the timing of monsoon onset in observation and global climate models?2023

    • Author(s)
      Kajikawa, Y.
    • Organizer
      The International Workshop on Climate, Water, Land, and Life in Monsoon Asia
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Variability in coastal precipitation over tropical Asian monsoon regions2023

    • Author(s)
      Yokoi, S.
    • Organizer
      The International Workshop on Climate, Water, Land, and Life in Monsoon Asia
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Madden-Julian Oscillation prediction using machine learning2023

    • Author(s)
      Suematsu, T., K. Nakai, T. Yoneda, D. Takasuka, T. Jinno, Y. Saiki, H. Miura
    • Organizer
      第8回マッデン・ジュリアン振動研究会
    • Related Report
      2022 Annual Research Report
  • [Presentation] DYAMOND2 におけるMJO の再現性の雲微物理依存性について2023

    • Author(s)
      末松環, 三浦裕亮, 小玉知央, 山田洋平
    • Organizer
      第9回マッデン・ジュリアン振動研究会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Observational study on multi-scale variability of precipitation in the northwestern coastal area of Luzon Island, the Philippines: Results of YMC-BSM 2018 field campaign2022

    • Author(s)
      Yokoi, S., K. Yoneyama, R. Shirooka, E. O. Cayanan, and C. O. Iglesia
    • Organizer
      JpGU Meeting 2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Topographic and resolution impact on the convection over the Philippine islands2022

    • Author(s)
      Kajikawa, Y. and T. Yamaura
    • Organizer
      AOGS 19th annual meeting
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Characteristics of the MJO to investigate in NICAM climate simulations2022

    • Author(s)
      Suematsu, T., H. Miura, C. Kodama, D. Takasuka
    • Organizer
      NICAM気候データ解析研究集会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Microphysics dependency on the reproducibility of the MJO in the NICAM DYAMOND 2 experiment2022

    • Author(s)
      Suematsu, T., C. Kodama, Y. Yamada., H. Miura, D. Takasuka, T. Miyakawa
    • Organizer
      rd PAN-GASS meeting understanding and modeling atmospheric processes
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Machine learning prediction of the Madden-Julian Oscillation using reservoir computing.2022

    • Author(s)
      Suematsu, T., K. Nakai, T. Yoneda, D. Takasuka, T. Jinno, Y. Saiki, H. Miura
    • Organizer
      UTokyo-NTU Workshop on Atmospheric Convection
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Characteristics of the Madden-Julian Oscillation reproduced in a NICAM-AMIP type simulation2022

    • Author(s)
      Suematsu, T., H. Miura, C. Kodama, D. Takasuka
    • Organizer
      AGU fall meeting 2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Deceleration of MJO Speed Associated with Overly Strong Walker Circulation in a NICAM-AMIP Simulation2022

    • Author(s)
      Suematsu, T., H. Miura, C. Kodama, D. Takasuka
    • Organizer
      JPGU Meeting 2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Projection of high clouds and its link to ice hydrometeors: An approach by using long-term global cloud-system resolving simulations2022

    • Author(s)
      Chen, Y.-W., M. Satoh, C. Kodama, A. T. Noda, and Y. Yamada
    • Organizer
      JPGU Meeting 2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 全球雲解像気候モデルによる熱帯沿岸域降水日変化の再現性検証2022

    • Author(s)
      横井覚,梶川義幸
    • Organizer
      日本気象学会2022年度秋季大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] インド洋-太平洋暖水域における大気境界層熱・水収支過程の観測的研究,2022

    • Author(s)
      横井覚
    • Organizer
      大気の不安定現象に関するワークショップ
    • Related Report
      2022 Annual Research Report
  • [Presentation] Challenge to the New Generation Computational Climate Science Research2021

    • Author(s)
      Kajikawa, Y.
    • Organizer
      The 11th Kobe University Brussels European Centre Symposium
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 気候システム評価手法開発に向けた解析:進捗と目標2021

    • Author(s)
      梶川義幸
    • Organizer
      第2回雲解像気候学ワークショップ
    • Related Report
      2021 Annual Research Report
  • [Presentation] NICAM-AMIP実験で再現された季節内振動の特徴について2021

    • Author(s)
      末松環
    • Organizer
      第2回雲解像気候学ワークショップ
    • Related Report
      2021 Annual Research Report
  • [Presentation] A Review of the Variability of the Propagation Speed of the MJO and a New Perspective Associated with the Walker Circulation2021

    • Author(s)
      Suematsu, T., and Hiroaki Miura
    • Organizer
      102nd American Meteorological Society Meeting
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Microphysics dependency in 3.5km NICAM DYAMOND phase 2 experiments2021

    • Author(s)
      Suematsu, T., C. Kodama, Y. Yamada, H. Miura, D. Takasuka, and T. Miyakawa
    • Organizer
      American Geophysical Union Fall Meeting 2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] A consecutive development of MJO events reproduced by three-months SST-forced experiments with NICAM2021

    • Author(s)
      Suematsu, T., Tomoro Yanase, Hiroaki Miura, Chihiro Kodama, and Masaki Satoh
    • Organizer
      Japan Geoscience Union Meeting 2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Microphysics dependency on the reproducibility of the MJO in the DYAMOND winter phase experiment on NICAM2021

    • Author(s)
      Suematsu, T., Y. Yamada, C. Kodama, T. Miyakawa, H. Miura, and M. Satoh
    • Organizer
      Japan Geoscience Union Meeting 2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] A comparison of the microphysics dependency on the reproducibility of the MJO under different resolutions using NICAM2021

    • Author(s)
      Suematsu, T., Y. Yamada, C. Kodama, and T. Miyakawa
    • Organizer
      European Geophysical Union General Assembly 2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] NICAM-DYAMOND2実験で再現されたMJOの雲微物理依存性について2021

    • Author(s)
      末松環,小玉知央,山田洋平,三浦裕亮,高須賀大輔,宮川知己
    • Organizer
      2021年日本気象学会秋季大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Modulation of eastward moving speed of the Madden-Julian Oscillation by the fluctuation of the Walker circulation strength2021

    • Author(s)
      末松環,三浦裕亮
    • Organizer
      第7回マッデン・ジュリアン振動研究会
    • Related Report
      2021 Annual Research Report
  • [Presentation] High Cloud Annual Variation and Its Responses to Global Warming in the NICAM AMIP Experiment2021

    • Author(s)
      Chen, Ying-Wen, Masaki Satoh, Chihiro Kodama, Akira T. Noda, Yohei Yamada
    • Organizer
      AOGS 18th Annual Meeting, 2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] インドネシア海大陸域における降水日変化研究2021

    • Author(s)
      横井 覚
    • Organizer
      水文・水資源学会/日本水文科学会2021年度研究発表会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 船舶定点観測データを用いたインド洋ー太平洋暖水域における大気境界層エネルギー収支解析2021

    • Author(s)
      横井 覚
    • Organizer
      2021年日本気象学会秋季大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Observational study on boundary-layer moist static energy budget over the tropical Indo-Pacific warm pool domain2021

    • Author(s)
      Yokoi, S.
    • Organizer
      Japan Geoscience Union Meeting 2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Tuning NICAM for reproducibility of the Madden-Julian Oscillation2021

    • Author(s)
      Tamaki Suematsu, Tomoro Yanase, Hiroaki Miura
    • Organizer
      第12回熱帯気象研究会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Projection of high clouds and its link to ice hydrometeors: An approach by using long-term global cloud-system resolving simulations.2021

    • Author(s)
      Ying-Wen Chen, Masaki Satoh, Chihiro Kodama, Akira T. Noda, Yohei Yamada
    • Organizer
      第12回熱帯気象研究会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 階層構造を踏まえた気候システム評価手法開発への挑戦2020

    • Author(s)
      梶川義幸
    • Organizer
      第1回雲解像気候学ワークショップ
    • Related Report
      2020 Annual Research Report
  • [Presentation] NICAMによるマッデン・ジュリアン振動の再現性について2020

    • Author(s)
      末松環
    • Organizer
      第1回雲解像気候学ワークショップ
    • Related Report
      2020 Annual Research Report
  • [Presentation] 海大陸域における対流活動日変化の再現性検証に向けて2020

    • Author(s)
      横井覚
    • Organizer
      第1回雲解像気候学ワークショップ
    • Related Report
      2020 Annual Research Report
  • [Presentation] 全球雲解像モデルNICAMが描像した氷雲2020

    • Author(s)
      Ying-Wen Chen
    • Organizer
      第1回雲解像気候学ワークショップ
    • Related Report
      2020 Annual Research Report
  • [Presentation] A consecutive development of MJO events in the 2018-2019 winter season reproduced by a three-month SST-forced experiment with NICAM2020

    • Author(s)
      Tamaki Suematsu, Tomoro Yanase, Hiroaki Miura, Masaki Satoh
    • Organizer
      American Geophysical Union Fall meeting 2020
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research

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Published: 2020-10-30   Modified: 2025-01-30  

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