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Development and applications of non-linear analytic integrated assessment models

Research Project

Project/Area Number 20K13474
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 07040:Economic policy-related
Research InstitutionKobe University

Principal Investigator

Sakamoto Hiroaki  神戸大学, 経済学研究科, 准教授 (80758996)

Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2023: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2022: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2021: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2020: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Keywords経済政策 / 気候変動 / 統合評価 / 経済学 / 経済分析
Outline of Research at the Start

本研究では,地球の気候システムと経済システムとの相互作用について,理論分析と数値分析とを接合する新たな統合評価モデルの開発を目指す.とくに,既存研究の多くが用いる線形性の仮定を緩和し,気候システムの非線形性が経済システムの中で果たす役割を解明する.手法としては,動学的最適化問題の逆問題を解くことで,順問題が解析的な解を持つことを保証しながらモデルを一般化するというアプローチをとる.モデルの応用として,全球気候モデルの実験結果をベンチマークにカリブレーションを行い,最適な気候変動政策や国際協調の可能性,不確実性の影響等について定量的に評価する.

Outline of Final Research Achievements

Greenhouse gases, particularly carbon dioxide, offer economic benefits but also contribute to climate change, causing societal harm. To determine optimal emission reduction strategies, it is crucial to quantitatively compare the costs and benefits, considering both economic and climate factors simultaneously. This research project aims to refine an integrated model that incorporates the latest scientific insights, enabling a more accurate assessment of the trade-offs between economic activities and their environmental impact. By enhancing the model's ability to capture the complex interplay of these factors, policymakers can make more informed decisions regarding emission reduction targets, timelines, and the allocation of responsibilities among different actors. Ultimately, this research seeks to provide a robust framework for navigating the challenges posed by climate change while minimizing economic disruptions.

Academic Significance and Societal Importance of the Research Achievements

気候変動問題は,気候科学の専門家だけでなく,様々な分野の専門家が協力して解決すべき課題です.ただ,地球の気候を大規模計算機で再現する気候モデルは非常に複雑なもので,他分野の研究者がその成果を正確に理解し,自らの研究に活用することは簡単ではありません.この研究で開発した理論は,複雑な気候モデルのエッセンスをシンプルなモデルで再現できるようにすることで,非専門家が最新の気候科学にアクセスするためのインターフェイスとして機能します.幅広い分野における応用研究や政策における意思決定をサポートすることも期待されます.

Report

(5 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (19 results)

All 2023 2022 2021 Other

All Int'l Joint Research (7 results) Journal Article (1 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 1 results) Presentation (8 results) (of which Int'l Joint Research: 3 results) Remarks (2 results) Funded Workshop (1 results)

  • [Int'l Joint Research] オスロ大学(ノルウェー)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] ニューシャテル大学(スイス)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] オスロ大学(ノルウェー)

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research] カリフォルニア大学バークレー校(米国)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] オスロ大学(ノルウェー)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] カリフォルニア大学バークレー校(米国)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] オスロ大学(ノルウェー)

    • Related Report
      2020 Research-status Report
  • [Journal Article] Sober optimism and the formation of international environmental agreements2021

    • Author(s)
      Karp Larry、Sakamoto Hiroaki
    • Journal Title

      Journal of Economic Theory

      Volume: 197 Pages: 105321-105321

    • DOI

      10.1016/j.jet.2021.105321

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Feedback-adjusted carbon prices2023

    • Author(s)
      Hiroaki Sakamoto
    • Organizer
      環境経済政策学会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Self-enforcing stable sets2023

    • Author(s)
      Hiroaki Sakamoto
    • Organizer
      Workshop on Climate and Environmental Economics
    • Related Report
      2023 Annual Research Report
  • [Presentation] Feedback-adjusted carbon prices2023

    • Author(s)
      Hiroaki Sakamoto
    • Organizer
      2023 UCSB Workshop on Natural Resource Economics Theory
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Feedback-adjusted carbon prices2023

    • Author(s)
      阪本浩章
    • Organizer
      環境問題と非線形動学研究グループセミナー
    • Related Report
      2022 Research-status Report
  • [Presentation] Self-enforcing stable sets2022

    • Author(s)
      阪本浩章
    • Organizer
      環境資源経済学ワークショップ
    • Related Report
      2022 Research-status Report
  • [Presentation] Self-enforcing stable sets2022

    • Author(s)
      Hiroaki Sakamoto
    • Organizer
      SURED 2022
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Efficiency of self-enforcing agreements2021

    • Author(s)
      Hiroaki Sakamoto
    • Organizer
      Annual Conference of the European Association of Environmental and Resource Economists
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Efficiency of self-enforcing agreements2021

    • Author(s)
      Hiroaki Sakamoto
    • Organizer
      環境経済・政策学会
    • Related Report
      2021 Research-status Report
  • [Remarks] 気候変動研究のフロンティア

    • URL

      https://ccseminar.com/

    • Related Report
      2023 Annual Research Report 2022 Research-status Report 2020 Research-status Report
  • [Remarks] 気候変動研究のフロンティア

    • URL

      https://ccseminar.com

    • Related Report
      2021 Research-status Report
  • [Funded Workshop] Workshop on Climate and Environmental Economics2023

    • Related Report
      2023 Annual Research Report

URL: 

Published: 2020-04-28   Modified: 2025-01-30  

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