| Project/Area Number |
16360249
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
水工水理学
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| Research Institution | The University of Tokyo |
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Principal Investigator |
OKI Taikan The University of Tokyo, Institute of Industrial Science, Associate Professor, 生産技術研究所, 助教授 (50221148)
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| Co-Investigator(Kenkyū-buntansha) |
KITOU Akio Japan Meteorological Research Institute, Climate Research Department, Researcher, 気候研究部, 室長(研究職) (50354452)
KITSUREGAWA Masaru The University of Tokyo, Institute of Industrial Science, Professor, 生産技術研究所, 教授 (40161509)
MASUDA Koichi Japan Agency for Marine-Earth Science and Technology, Frontier Research Center for Global Change, Researcher, 地球環境フロンティア研究センター, 研究員 (30181647)
TANAKA Kenji Kyoto University, Disaster Prevention Research Institute, Associate Professor, 防災研究所, 助手 (30283625)
KANAE Shinjiro Research Institute for Humanity and Nature, Associate Professor, 研究部, 助教授 (20313108)
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| Project Period (FY) |
2004 – 2005
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| Project Status |
Completed (Fiscal Year 2005)
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| Budget Amount *help |
¥15,100,000 (Direct Cost: ¥15,100,000)
Fiscal Year 2005: ¥6,000,000 (Direct Cost: ¥6,000,000)
Fiscal Year 2004: ¥9,100,000 (Direct Cost: ¥9,100,000)
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| Keywords | land surface models / Global Soil Wetness Project / data archive / global water cycle / soil moisture / river discharge / river routing scheme / land assimilation |
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| Research Abstract |
This project aims to estimate global distribution of land surface energy and water budget for ten years to reveal the key processes in land surfaces, which have large impact on climatic and environmental change of the global water circulation. We carefully intercompare number of land surface models and their outputs with same boundary conditions and atmospheric forcings. In the last year of this grant (H16-H17), we have had following research fruits.
1.We archived 15 model-outputs in a daily and 1-degree scale for 10 years. Several simulations were executed with different conditions or settings, so that the amount of the datasets increases in multiplied by each simulation. The intensive analyses revealed that multimodel ensembles are relatively quite reasonable and closer to the reality by validation with observed soil moisture data.
2.Intercomparison Center (Inter-comparison center) was developed with up-to-date internet technology and data mining schemes. ICC visualizes the massive 4-dimensinal simulation data and helps users to capture and understand the hidden land surface processes. ICC has been internationally praised by not only our close research groups but also ordinary users. Data Distribution Center (DCC) was also developed to exchange the simulated data and the forcings. Over 300,000 files in "the most plausible datasets by multimodel analyses" have been downloaded until March, 2006.
3.The most plausible land surface estimation illustrated a new categorization of global hydro-climatic characteristics and more detailed information for water circulation. These results were published in the technical report of COLA (Center for Ocean, Land, and Atmosphere) in 2006, and will probably be included in a special issue of Science on the freshwater circulation and climatic changes.
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