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

2023 Fiscal Year Final Research Report

• Project/Area Number: 21K04269
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 22040:Hydroengineering-related
• Research Institution: The 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
• Keywords: 統合陸域シミュレータ / 陸モデル / 積雪・融雪過程

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.

Free Research Field

統合陸域モデリング

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。