Estimation of Climate Change Impact on Japanese Water Resources
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- KOTSUKI Shunji
- Graduate School of Engineering, Kyoto University
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- TANAKA Kenji
- Disaster Prevention Research Institute, Kyoto University
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- KOJIRI Toshiharu
- Disaster Prevention Research Institute, Kyoto University
Bibliographic Information
- Other Title
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- 気候変動が日本の水資源に与える影響推計(I)
- 気候変動が日本の水資源に与える影響推計(1)日本全域水資源モデルの開発
- キコウ ヘンドウ ガ ニホン ノ ミズシゲン ニ アタエル エイキョウ スイケイ(1)ニホン ゼンイキ ミズシゲン モデル ノ カイハツ
- Part 1 The development of a Japanese Water Resource Model
- -日本全域水資源モデルの開発-
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Abstract
As the problem of climate change increases in importance, evaluations of its impact are urgently required.Through a series of studies, we estimated the impact of climate change on Japanese water resources using a waterresources model comprising five sub-modules: land surface hydrology, irrigation, rice growth, dam operation, andstream flow. The model has the benefits of simulating not only the natural water cycle on land but also rice yields and theeffects of human activities such as dam operations, water withdrawal, and irrigation. This paper presents the water resourcesmodel and verifies its accuracy for Japanese river basins. Using observed meteorological data during 1994-2003, we analyzedriver discharge, rice yields, and water stresses. The main results are as follows: (1) Simulated rice heading date,harvesting date, and yield agreed with the prefectural statistical data. (2) Estimated river discharges showed good agreementwith observed stream flow records in 20 first-grade rivers, with no parameter calibrations. The simulated data for riverdischarges were improved using a dam operation module and by correction for snowfall data. (3) Water stresses in Japaneseriver basins were computed by calculating the cumulative withdrawal to demand ratio (CWD). Calculated values showedgood agreement with a statistical drought map, suggesting that the CWD reflects actual water shortages in Japanese basins.
Journal
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- JOURNAL OF JAPAN SOCIETY OF HYDROLOGY AND WATER RESOURCES
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JOURNAL OF JAPAN SOCIETY OF HYDROLOGY AND WATER RESOURCES 26 (3), 133-142, 2013
THE JAPAN SOCIETY OF HYDROLOGY AND WATER RESOURCES
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Details 詳細情報について
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- CRID
- 1390001204440645632
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- NII Article ID
- 10031174784
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- NII Book ID
- AN10088049
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- ISSN
- 13492853
- 09151389
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- NDL BIB ID
- 024780422
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed