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Development of higher-order transport schemes in an ice-sheet/ice-shelf model

Research Project

Project/Area Number 17K05664
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Meteorology/Physical oceanography/Hydrology
Research InstitutionJapan Agency for Marine-Earth Science and Technology

Principal Investigator

SAITO Fuyuki  国立研究開発法人海洋研究開発機構, 地球環境部門(環境変動予測研究センター), 研究員 (60396942)

Project Period (FY) 2017-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2018: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2017: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords氷床モデル / 氷床モデリング / 数値モデリング / 保存性輸送数値スキーム / 氷床 / 数値計算
Outline of Final Research Achievements

Numerical ice sheet models include equations to solve evolution of ice thickness, temperature and ages, which are represented as either transport equation or advection-diffusion equations. In this study higher-order numerical schemes are implemented for these equations, in order to evaluate their efficiencies and accuracies with comparing the results obtained by classical numerical schemes such as the upwind schemes. In particular, implementation of one of the higher-order semi-Lagrangian scheme (the RCIP scheme) on the computation of ages achieved significant improvement not only the age itself but also annual layer thickness, which is inverse of the age derivative. It is expected that, using this novel technique, much accurate information can be provided for the decision of ice-core drilling site, for example.

Academic Significance and Societal Importance of the Research Achievements

近年、地球温暖化に対する氷床応答によって起こりうる将来の海水準上昇に、世界的な関心が集まっている。このことに関連して数値モデルを用いた氷床応答の定量的評価への要請も高い。また、気候システムのより深い理解のために過去の気候復元とその要因の研究が重要な課題である。氷床数値モデルで得られる氷床変動再現の高精度化、氷年代の高精度化はこのために有用な課題の一つである。本研究で開発改良した氷床モデルにより特に氷年代計算が飛躍的に向上し、古気候復元への重要な手法となった。

Report

(7 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
  • 2017 Research-status Report
  • Research Products

    (16 results)

All 2022 2021 2020 2019 2018 2017

All Journal Article (3 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 2 results,  Open Access: 3 results) Presentation (13 results) (of which Int'l Joint Research: 9 results)

  • [Journal Article] A one-dimensional temperature and age modeling study for selecting the drill site of the oldest ice core near Dome Fuji, Antarctica2022

    • Author(s)
      Takashi Obase, Ayako Abe-Ouchi, Fuyuki Saito, Shun Tsutaki, Shuji Fujita, Kenji Kawamura, and Hideaki Motoyama
    • Journal Title

      The Cryosphere Discussion

      Volume: - Pages: 1-24

    • DOI

      10.5194/tc-2022-204

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Implementation of the RCIP scheme and its performance for 1-D age computations in ice-sheet models2020

    • Author(s)
      Saito Fuyuki、Obase Takashi、Abe-Ouchi Ayako
    • Journal Title

      Geoscientific Model Development

      Volume: 13 Issue: 11 Pages: 5875-5896

    • DOI

      10.5194/gmd-13-5875-2020

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Implementation of RCIP scheme and its performance for 1D age computations in ice-sheet models2020

    • Author(s)
      Saito Fuyuki、Obase Takashi、Abe-Ouchi Ayako
    • Journal Title

      Geoscientific Model Development Discussions

      Volume: -

    • DOI

      10.5194/gmd-2020-53

    • Related Report
      2019 Research-status Report
    • Open Access
  • [Presentation] Improvement in thermodynamics computation in a numerical ice-sheet model IcIES2022

    • Author(s)
      Fuyuki SAITO, Takashi Obase, Ayako Abe-Ouchi
    • Organizer
      Japan Geoscience Union Meeting 2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 氷床流動モデル IcIES の開発と熱力学過程の改良2022

    • Author(s)
      齋藤冬樹,小長谷貴志,阿部彩子
    • Organizer
      雪氷研究大会(2022・札幌)
    • Related Report
      2022 Annual Research Report
  • [Presentation] Improvement in thermodynamics computation in a numerical ice-sheet model IcIES2022

    • Author(s)
      Fuyuki SAITO, Takashi Obase, Ayako Abe-Ouchi
    • Organizer
      The 13th Symposium on Polar Science
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Implementation of higher-order advection schemes in a numerical ice-sheet model for ice-core studies2021

    • Author(s)
      齋藤 冬樹、小長谷 貴志、阿部 彩子
    • Organizer
      Japan Geoscience Union Meeting 2021
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] 氷床流動モデルIcIES-2の開発と理想的・現実的氷床の感度実験2021

    • Author(s)
      齋藤冬樹 阿部彩子 小長谷貴志 大石龍太
    • Organizer
      雪氷研究大会(2021・千葉-オンライン)
    • Related Report
      2021 Research-status Report
  • [Presentation] Development of an ice-sheet model IcIES-1 and IcIES-2: benchmark simulation on idealized and realistic ice-sheet configuration2021

    • Author(s)
      Fuyuki SAITO, Ayako ABE-OUCHI, Takashi OBASE, Ryouta O'ISHI
    • Organizer
      The 12th Symposium on Polar Science
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Development of a numerical ice-sheet model for simulation of summit migration and dating2020

    • Author(s)
      Fuyuki Saito, Ayako Abe-Ouchi, and Takashi Obase
    • Organizer
      EGU General Assembly 2020
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Development of a numerical ice-sheet model for simulation of summit dynamics2020

    • Author(s)
      Fuyuki SAITO, Ayako Abe-Oushi, Takashi Obase
    • Organizer
      JpGU-AGU Joint Meeting 2020
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Performance of RCIP scheme on 1-d age computation of ice sheet2019

    • Author(s)
      Fuyuki SAITO, Takashi Obase, Ayako Abe-Ouchi
    • Organizer
      Japan Geoscience Union Meeting 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Performance of RCIP scheme on 1-d age computation of ice sheet2019

    • Author(s)
      SAITO Fuyuki, Takashi OBASE and Ayako ABE-OUCHI
    • Organizer
      JpGU 2019
    • Related Report
      2018 Research-status Report
  • [Presentation] Sensitivities in ice-sheet simulation due to a variation of numerical formulation of the ice/temperature transport equation2018

    • Author(s)
      SAITO Fuyuki
    • Organizer
      第9回極域科学シンポジウム
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Sensitivity of simulated ice-sheet topography to the Glen’s flow-law exponent2017

    • Author(s)
      SAITO Fuyuki
    • Organizer
      第8回極域科学シンポジウム
    • Related Report
      2017 Research-status Report
  • [Presentation] Uncertainties in ice-sheet simulation due to a variation in the numerical schemes of the ice transport equations2017

    • Author(s)
      SAITO Fuyuki
    • Organizer
      JpGU-AGU Joint Meeting 2017
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research

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Published: 2017-04-28   Modified: 2024-01-30  

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