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Simulation of the terrestrial hydrological cycle using Integrated Land Simulator with a focus on snow processes

Research Project

Project/Area Number 21K04269
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 22040:Hydroengineering-related
Research InstitutionThe University of Tokyo

Principal Investigator

Nitta Tomoko  東京大学, 生産技術研究所, 特任講師 (50754652)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2023: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywords統合陸域シミュレータ / 陸モデル / 積雪・融雪過程 / 積雪融雪過程 / 陸域水循環シミュレーション
Outline of Research at the Start

地球システムモデルを用いた将来の気候変動予測の結果は、治水計画をはじめ多様な分野で利用や利用に向けた検討がなされているが、現在の予測結果は系統的な誤差を持つことが知られている。そのため、モデルの高度化・精緻化が必要とされており、陸域過程の精度良い表現は重要な課題のひとつである。本研究では、統合陸域シミュレータにおいて、積雪過程に着目して改良を行い、陸域オフライン実験と大気陸域結合実験による陸域水循環シミュレーションを行う。積雪アルベドフィードバックや気候場への影響に着目して解析し、陸域水循環シミュレーションの改善は気候モデルの精度向上にどの程度寄与するのかを明らかにする。

Outline of Final Research Achievements

In this research project, we improved the representation of terrestial processes in the Integrated Land Simulator (ILS) for more accurate climate simulations. A scheme for calculating surface albedo during forest snow cover was improved and high-resolution offline experiments and experiments coupled with MIROC and ILS were conducted. ILS also participated in an international land model benchmarking project, which will allow us to validate and improve the model from more diverse perspectives in the future.

Academic Significance and Societal Importance of the Research Achievements

本研究課題では、陸域の水・熱循環を計算する統合陸域シミュレータ(ILS)について、陸域物理過程の改善と、気候モデルMIROCとILSを結合した実験に取り組んだ。気候モデルによる将来の気候変動予測は、気候変動に関する政府間パネルの評価報告書にまとめられる最新の研究から産業界に至るまで、幅広く利用されるようになっており、本研究はこのようなシミュレーションの精度向上に資することが期待される。

Report

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

    (13 results)

All 2024 2023 2022 2021

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

  • [Journal Article] On the predictability of turbulent fluxes from land: PLUMBER2 MIP experimental description and preliminary results2024

    • Author(s)
      Abramowitz G. and coauthors
    • Journal Title

      EGUsphere

      Volume: -

    • DOI

      10.5194/egusphere-2023-3084

    • Related Report
      2023 Annual Research Report
    • Open Access
  • [Journal Article] A fast physically-guided emulator of MATSIRO land surface model2024

    • Author(s)
      Olson Roman、Nitta Tomoko、Yoshimura Kei
    • Journal Title

      Journal of Hydrology

      Volume: 634 Pages: 131093-131093

    • DOI

      10.1016/j.jhydrol.2024.131093

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] コミュニティ陸モデル開発に向けたILSカプルソンの開催報告2023

    • Author(s)
      新田 友子、Anh Cao、荒川 隆、竹島 滉、芳村 圭
    • Journal Title

      JOURNAL OF JAPAN SOCIETY OF HYDROLOGY AND WATER RESOURCES

      Volume: 36 Issue: 4 Pages: 306-310

    • DOI

      10.3178/jjshwr.36.306

    • ISSN
      0915-1389, 1349-2853
    • Year and Date
      2023-11-05
    • Related Report
      2023 Annual Research Report
  • [Journal Article] Water stress assessment by coupled simulation of Integrated Land Simulator (ILS) and Integrated Assessment Model (IAM)2023

    • Author(s)
      伏尾 佳悟、六藤 雄一、福田 哲也、塚田 洋平、新田 友子、吉兼 隆生、山崎 大、芳村 圭、丸吉 政博
    • Journal Title

      SEISAN KENKYU

      Volume: 75 Issue: 2 Pages: 135-140

    • DOI

      10.11188/seisankenkyu.75.135

    • ISSN
      0037-105X, 1881-2058
    • Year and Date
      2023-05-01
    • Related Report
      2023 Annual Research Report
    • Open Access
  • [Journal Article] 統合陸域シミュレータと気候モデル MIROC の連成シミュレーション2022

    • Author(s)
      新田友子,荒川隆,鳩野美佐子,竹島滉,山崎大,芳村圭
    • Journal Title

      計算工学講演会論文集

      Volume: 27

    • Related Report
      2022 Research-status Report
  • [Presentation] Design and development of Integrated Land Simulator2023

    • Author(s)
      Oki, T., T. Nitta, T. Arakawa, T. Takeshima, D. Yamazaki, K. Yoshimura
    • Organizer
      WCRP Open Science Conference 2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Simple Physically-Based Emulator of MATSIRO Land Surface Model2023

    • Author(s)
      Olson, R., K. Yoshimura, T. Nitta
    • Organizer
      AOGS2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] MIROC-ILS coupling: Coupling multiple land component models to an atmosphere and ocean model with Jcup2023

    • Author(s)
      Nitta, T., T. Arakawa, A. Takeshima, M. Hatono, D. Yamazaki, and K. Yoshimura
    • Organizer
      Sixth Workshop on Coupling Technologies for Earth System Models
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] 統合陸域シミュレータと気候モデルMIROCの連 成シミュレーション2022

    • Author(s)
      新田友子,荒川隆,鳩野美佐子,竹島滉,山崎大,芳村圭
    • Organizer
      第27回計算工学講演会
    • Related Report
      2022 Research-status Report
  • [Presentation] Development of MIROC-ILS: coupling of multiple land component models with atmosphere and ocean models2022

    • Author(s)
      Nitta, T., T. Arakawa, A. Takeshima, M. Hatono, D. Yamazaki, and K. Yoshimura
    • Organizer
      Land Surface Modelling Summit 2022
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Coupling of Integrated Land Simulator to MIROC6’s Atmosphere and Ocean Models2022

    • Author(s)
      Nitta, T., T. Arakawa, A. Takeshima, M. Hatono, D. Yamazaki, and K. Yoshimura
    • Organizer
      AGU Fall meeting 2022
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] 陸域モデルの土壌水分スキームの高度化と土壌パラメータの水平・鉛直分布の考慮2021

    • Author(s)
      浜田光太郎、山崎大、新田友子
    • Organizer
      第66回水工学講演会
    • Related Report
      2021 Research-status Report
  • [Presentation] 斜面流れを考慮した全球陸域モデルによる丘-谷間水分コントラストの再現2021

    • Author(s)
      足立幸太、山崎大、新田友子
    • Organizer
      第66回水工学講演会
    • Related Report
      2021 Research-status Report

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Published: 2021-04-28   Modified: 2025-01-30  

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