<b>Simulation of Global Water Cycle in Land </b><b>Using a Crop Calendar Specified by Phenological Analysis of NDVI </b>
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- KOTSUKI Shunji
- Graduate School of Engineering, Kyoto University
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- TANAKA Kenji
- Disaster Prevention Institute, Kyoto University
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- KOJIRI Toshiharu
- Disaster Prevention Institute, Kyoto University
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- HAMAGUCHI Toshio
- Disaster Prevention Institute, Kyoto University
Bibliographic Information
- Other Title
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- 衛星データから作成した農事暦を活用した全球陸域水循環解析
- Simulation of Global Water Cycle in Land Using a Crop Calendar Specified by Phenological Analysis of NDVI
Abstract
This study was conducted to propose a global water cycle model on land including irrigation and reservoirs. The proposed model, which comprises a hydrological and land surface model, a runoff model, and a reservoir operation model, simulates water flow on land globally. Cropping calendars for six crops (rice, spring wheat, winter wheat, maize, cotton, and soybean) were specified through phonological analysis of NDVI. A global river channel network is scaled up from a 1 km resolution flow direction map. Those land surface parameters well suit the statistical data. We conducted a global water cycle analysis over ten years. The main findings of results are as follows. Mean annual runoff agreed well with observed data without arid areas.Estimated yearly irrigation water requirements correspond to statistical data in many countries, suggesting that irrigation water requirements are analyzed well using our model. Reservoir operations have a strong impact on river discharge on land compared to withdrawal for irrigation.
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 25 (6), 373-388, 2012
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
- 1390282679415959680
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- NII Article ID
- 130004446064
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- ISSN
- 13492853
- 09151389
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- Text Lang
- en
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- Data Source
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- JaLC
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed