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Model development of global-coastal seamless extreme sea level and estimation on coastal climate change risk

Research Project

Project/Area Number 22K14329
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 22040:Hydroengineering-related
Research InstitutionKyoto University

Principal Investigator

Shimura Tomoya  京都大学, 防災研究所, 准教授 (70789792)

Project Period (FY) 2022-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2023: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2022: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Keywords気候変動 / 極端海面水位 / 高潮 / 波浪 / 台風 / 全球 / 海面上昇
Outline of Research at the Start

沿岸域の気候変動適応策のために,海面上昇に加えて高潮および波浪による短時間の海面上昇を考慮した極端海面水位評価が必要である.既往の気候変動下の極端海面水位予測は,高潮レベルが将来にわたり不変という仮定および波浪効果による短時間の海面上昇が未考慮という大きな問題点がある.本研究では,平均海面水位+高潮+波浪効果それぞれの気候変動による変化が考慮可能かつ全球から沿岸域までの極端海面水位をシームレスに評価するモデルを開発する.全球的な極端海面水位変化の気候学的な原因を明らかにしつつ,工学的な気候変動適応策の策定に耐えうる定量的な極端海面水位の予測を提供する.

Outline of Final Research Achievements

The study aimed to evaluate global extreme sea level changes associated with storm surges and wave characteristics under climate change. To achieve this, a global unstructured grid model was developed, enabling high-precision long-term climate simulations from the open ocean to coastal areas. Using the long-term global data on storm surges and waves constructed with this model, the long-term changes in extreme sea levels, considering mean sea level rise, tides, storm surges, and waves, were assessed in certain regions. Additionally, the study elucidated the long-term wave characteristic changes globally, both in the past and under future warming scenarios. Concerning the changes in extreme sea levels near Japan, particularly influenced by typhoon characteristics, original climate experiments were conducted using a global atmospheric climate model. These experiments projected an intensification trend of typhoons with showing uncertainties due to natural variability.

Academic Significance and Societal Importance of the Research Achievements

気候変動研究の最新の知見を取りまとめる気候変動に関する政府間パネル (IPCC) の報告書において,2013年発表の第5次報告書までは,沿岸域の脅威として平均海面上昇に焦点を当てていたが,2021年発表の第6次報告書では,高潮や波浪を含む極端海面水位変化を考慮することの重要性が指摘された.本研究は,全球における沿岸域の高潮および波浪を評価可能なモデルを開発し,これまで考慮されてこなかった高潮および波浪特性変化に伴う海面水位変化を考慮した気候変動下における全球の極端海面水位の変化予測につながる知見を得た.今後の気候変動下の沿岸域の適応策策定にとって重要な貢献となる.

Report

(3 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • Research Products

    (21 results)

All 2023 2022 Other

All Int'l Joint Research (1 results) Journal Article (9 results) (of which Int'l Joint Research: 2 results,  Open Access: 5 results,  Peer Reviewed: 8 results) Presentation (11 results) (of which Int'l Joint Research: 6 results)

  • [Int'l Joint Research] アルゴンヌ国立研究所/ノートルダム大学(米国)

    • Related Report
      2023 Annual Research Report
  • [Journal Article] Progress on the Research of Future Projection of Global Ocean Wave and Storm Surge under Global Warming Condition2023

    • Author(s)
      志村智也
    • Journal Title

      Wind Engineers, JAWE

      Volume: 48 Issue: 3 Pages: 253-260

    • DOI

      10.5359/jawe.48.253

    • ISSN
      0912-1935, 1883-8413
    • Related Report
      2023 Annual Research Report
    • Open Access
  • [Journal Article] TYPHOON-GENERATED EXTREME WAVE REANALYSIS BY DATA ASSIMILATION WITH DRIFTING BUOY OBSERVATIONS2023

    • Author(s)
      山崎 豪太, 志村 智也, 森 信人, 宮下 卓也,
    • Journal Title

      Japanese Journal of JSCE

      Volume: 79 Issue: 17 Pages: n/a

    • DOI

      10.2208/jscejj.23-17021

    • ISSN
      2436-6021
    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] THE ASSESSMENT OF THE IMPACT OF CLIMATE CHANGE ON TYPHOONS USING A SLAB-OCEAN COUPLED ATMOSPHERIC GLOBAL CIRCULATION MODEL WITH MONTH-FIXED EVENT ATTRIBUTION EXPERIMENTS2023

    • Author(s)
      岡田 智晴, 志村 智也, 森 信人, 宮下 卓也, 水田 亮
    • Journal Title

      Japanese Journal of JSCE

      Volume: 79 Issue: 17 Pages: n/a

    • DOI

      10.2208/jscejj.23-17168

    • ISSN
      2436-6021
    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Tropical cyclone-induced coastal sea level projection and the adaptation to a changing climate2022

    • Author(s)
      Mori Nobuhito、Shimura Tomoya
    • Journal Title

      Cambridge Prisms: Coastal Futures

      Volume: 1

    • DOI

      10.1017/cft.2022.6

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] LONG-TERM HINDCASTS OF GLOBAL EXTREME SEA LEVELS USING UNSTRUCTURED GRID MODELS2022

    • Author(s)
      大畑 翔平, 志村 智也, William PRINGLE, 宮下 卓也, 森 信人
    • Journal Title

      Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering)

      Volume: 78 Issue: 2 Pages: I_943-I_948

    • DOI

      10.2208/kaigan.78.2_I_943

    • ISSN
      1883-8944, 1884-2399
    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] THE ASSESSMENT OF THE IMPACT OF CLIMATE CHANGE ON TYPHOONS USING A SLAB-OCEAN COUPLED ATMOSPHERIC GLOBAL CIRCULATION MODEL WITH MONTH FIXED EVENT ATTRIBUTION EXPERIMENTS2022

    • Author(s)
      岡田 智晴, 志村 智也, 森 信人, 宮下 卓也, Adrean WEBB, 水田 亮
    • Journal Title

      Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering)

      Volume: 78 Issue: 2 Pages: I_955-I_960

    • DOI

      10.2208/kaigan.78.2_I_955

    • ISSN
      1883-8944, 1884-2399
    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Global ocean wave fields show consistent regional trends between 1980 and 2014 in a multi-product ensemble2022

    • Author(s)
      Erikson L.、Morim J.、Hemer M.、Young I.、Wang X. L.、Mentaschi L.、Mori N.、Semedo A.、Stopa J.、Grigorieva V.、Gulev S.、Aarnes O.、Bidlot J.-R.、Breivik ?.、Bricheno L.、Shimura T.、Menendez M.、Markina M.、Sharmar V.、Trenham C.、Wolf J.、Appendini C.、Caires S.、Groll N.、Webb A.
    • Journal Title

      Communications Earth & Environment

      Volume: 3 Issue: 1 Pages: 320-320

    • DOI

      10.1038/s43247-022-00654-9

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Effects of Internal Climate Variability on Historical Ocean Wave Height Trend Assessment2022

    • Author(s)
      Casas-Prat Merce、Wang Xiaolan L.、Mori Nobuhito、Feng Yang、Chan Rodney、Shimura Tomoya
    • Journal Title

      Frontiers in Marine Science

      Volume: 9 Pages: 847017-847017

    • DOI

      10.3389/fmars.2022.847017

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Ocean Surface Wind Estimation From Waves Based on Small GPS Buoy Observations in a Bay and the Open Ocean2022

    • Author(s)
      Shimura Tomoya、Mori Nobuhito、Baba Yasuyuki、Miyashita Takuya
    • Journal Title

      Journal of Geophysical Research: Oceans

      Volume: 127 Issue: 9

    • DOI

      10.1029/2022jc018786

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Presentation] Validation of Long-term Historical Sea Levels Using Reanalysis and Best Track TC Data2023

    • Author(s)
      Shohei Ohata
    • Organizer
      Asia Oceania Geosciences Society (AOGS) annual meeting
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Long-term Assessment of Relative Sea Level Variability Considering Tectonic Deformations, Sea-level Rise, Storm Surge and Ocean Waves: The Case Study of Chilean Coast2023

    • Author(s)
      Francisco MOLTENI-PEREZ
    • Organizer
      Asia Oceania Geosciences Society (AOGS) annual meeting
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Typhoon-generated Extreme Wave Reanalysis with Data Assimilation of Drifting Buoy Observations2023

    • Author(s)
      Gota Yamasaki
    • Organizer
      Asia Oceania Geosciences Society (AOGS) annual meeting
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Long-term hindcasts and evaluations of global extreme sea levels using unstructured grid models2023

    • Author(s)
      Shohei Ohata
    • Organizer
      International Conference on Asian and Pacific Coasts
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] International Conference on Asian and Pacific Coasts2023

    • Author(s)
      Francisco MOLTENI-PEREZ
    • Organizer
      International Conference on Asian and Pacific Coasts
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 2021年夏季台風を対象とした非構造格子波浪モデルによる高波推算精度の検証2023

    • Author(s)
      塚原瑞葵
    • Organizer
      海岸工学講演会
    • Related Report
      2023 Annual Research Report
  • [Presentation] タイフーンウェーブを対象とした漂流ブイ観測データ同化波浪再解析システムの開発2023

    • Author(s)
      山崎豪太
    • Organizer
      海岸工学講演会
    • Related Report
      2023 Annual Research Report
  • [Presentation] スラブ海洋結合全球大気気候モデルを用いた月固定EA実験による顕著台風発生条件における台風特性評価2023

    • Author(s)
      岡田智晴
    • Organizer
      海岸工学講演会
    • Related Report
      2023 Annual Research Report
  • [Presentation] GLOBAL OCEAN WAVES AND STORM SURGE CHANGES UNDER A WARMING CLIMATE2022

    • Author(s)
      志村智也
    • Organizer
      37th International Conference on Coastal Engineering
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] 全球非構造格子モデルを用いた過去極端水位の長期評価2022

    • Author(s)
      大畑翔平
    • Organizer
      海岸工学講演会
    • Related Report
      2022 Research-status Report
  • [Presentation] スラブ海洋結合全球大気大循環モデルを用いた月固定EA実験による気候変動の台風への影響評価2022

    • Author(s)
      岡田智晴
    • Organizer
      海岸工学講演会
    • Related Report
      2022 Research-status Report

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Published: 2022-04-19   Modified: 2025-01-30  

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