代表者
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- NAKAKITA Eiichi
- 研究者番号：70183506
- KYOTO UNIVERSITY, Graduate of Engineering, Associate Professor
研究課題基本情報
研究期間
1998年度～2001年度
研究分野
審査区分
研究種目
Grant-in-Aid for Scientific Research (A).
研究機関
KYOTO UNIVERSITY
研究分担者
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- TANAKA Kenji
- 研究者番号：30283625
- KYOTO UNIVERSITY, Disaster Prevention Research Inst., Research Associate
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- KONDOH Akihiko
- 研究者番号：30201495
- Chiba Univ., CERes, Associate Professor
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- EBISU Nobuhiro
- 研究者番号：60176782
- Ehime Univ., Faculty of Agriculture, Associate Professor
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- YSHIDA Hiromu
- 研究者番号：10210717
- Tokushima Univ., F. of Engineering, Associate Professor
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- TANAKA Takafumi
- 研究者番号：40192174
- Nagoya Univ., School of Agriculture, Research Associate
研究概要
The Lake Biwa project is featured by "Campaign and Permanent Field Observations Synchronized with Space- and Air-borne Remote Sensing", "Collaboration by Scientists, Engineers and Agriculturists" and "the Goal as Understanding Hydrologic Circulation in the Lake Biwa Basin Using Hydrologic-Meteorological Combined Models Assimilated by the Field Observations". This project has been promoted about 20 groups from around Japan.
In the second stage, we shifted weight from every-year campaign observation into permanent observation at four representative points. Operation of the permanent system in paddy field and forested area started in 1998 and in urban area and lake surface in 1999. According to this weight-shift to the permanent observation, we set "seasonal and year-to-year variation " and "vegetation phenology" as additional targets by effectively utilizing operational satellite information. Of course, for understanding the scale effect up to 20 km scale, tuning of model parameters and data assimilation are unchanged targets.
At the site of the paddy field instruments for measuring or estimating radiation and heat budget and water budget based on Bowen ratio method were set up. Also photosynthesis active radiometer was set up in this April. Measurement in forested area is almost same as paddy field except for using SAT. Campaign observations for measuring LAI and heat pulse velocity has been carried out on typical days of each. Measurements at lake-surface and urban area sites are almost same except that basis is set on the bulk method. All data from these four sites are collected at office using mobile phone.
発表文献
Nakakita Eiichi: "The Lake Biwa Project"J. of Japan Soc. Hydrol & Water Resour.. Vol.13, No.6. 429-438 (2000)
Kenji Tanaka et. al.: "Energy and Water Budget of Paddy Field in the Lake Biwa Basin, Japan"Proc. of International Workshop on GAME-AAN/Radiation. 55-58 (2001)
Oishi Satoru, et. al.: "Effect of Water Vapor on Advection of Corrective Rainfall Cells around the Lake BIWA, JAPAN"Fifth International Symposium on Hydrological Application on of Weather Radar. 171-176 (2001)
Kenii Tanaka, et. al: "Numerical Simulation of JSM-SiBUC Initialized and Externally Foeced by GAME Reanalysis Data"Proc. of International Workshop on GAME-AAN/Radiation. 39-41 (2001)
Nishikawa Atsusi et. al.: "Surface Meteorological Characteristics on a Steep Slope Forest - Meteorological Observation Tower by Biwako Project -"Proc. of 2nd Workshop on Remote Sensing of Hydrological Processes & Applications. 125-134 (2000)
Ebisu Nobuhiro: "Estimating of Evapotranspiration Using UDVI at Forested Water shed"Proc. of 2nd workshop on Remote Sensing of Hydrological Processes & Applications. 125-134 (2000)
Kondoh Akihiko and Atsushi Higuchi: "Relationship between Spectral Reflectance and Evaporation on Grassland"Proc. of 2nd Workshop on Remote Sensing of Hydrological Processes & Applications. 79-84 (2000)
Kondoh Akihiko., and Atsushi Higuchi: "Relationship between spectral reflectance and evaporation from vegetated surface"Hydrological Processes. 15. 1761-1770 (2001),
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http://kaken.nii.ac.jp/d/p/10305037/2001/6/en.ja.html