2019 Fiscal Year Final Research Report
Study of wind and solar radiation characteristics that affect the disturbance to sensible heat flux in a terraced paddy field
| Project/Area Number |
17K08006
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Rural environmental engineering/Planning
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| Research Institution | University of Miyazaki |
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Principal Investigator |
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| Project Period (FY) |
2017-04-01 – 2020-03-31
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| Keywords | 棚田 / 顕熱フラックス / 天空率 / 日照時間 / 結露量 |
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| Outline of Final Research Achievements |
In this study, the sky factor, sunrise time, sensible heat flux generation time and the amount of dew condensation were measured and analyzed in detail at the terraced paddy fields in Miyazaki prefecture, Japan. It was compared to a similar analysis in a flatland paddy field. As a result, the sky factor of the terraced paddy fields was low and the sunrise time was 50 min later. Sensible feat fluxes were occurring 60 min after sunrise. The amount of condensation in September was 65 liters per paddy, and 30 minutes was needed to evaporate it.
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| Free Research Field |
農業土木学
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| Academic Significance and Societal Importance of the Research Achievements |
棚田の熱収支は計測が難しく，未解明な部分が多い．棚田の微気象学的な特性を詳細な観測に基づいて明らかにすることを通して，天空率や結露が熱収支に深く関与していることを示していることに学術的な価値がある．加えて，棚田環境の保全にも資するものであり，社会的意義も大きい．
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