| Project/Area Number |
12680087
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
自然地理学
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| Research Institution | University of Tsukuba |
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Principal Investigator |
SUGITA Michiaki University of Tsukuba, Institute of Geoscience, Associate Professor, 地球科学系, 助教授 (80235887)
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| Project Period (FY) |
2000 – 2003
|
| Project Status |
Completed (Fiscal Year 2003)
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| Budget Amount *help |
¥2,200,000 (Direct Cost: ¥2,200,000)
Fiscal Year 2003: ¥400,000 (Direct Cost: ¥400,000)
Fiscal Year 2002: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 2001: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 2000: ¥800,000 (Direct Cost: ¥800,000)
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| Keywords | evaporation / laternt heat flux / land surface / atmospheric boundary layer / 蒸発 / 蒸発散 / 熱収支 / 大気境界層モデル / 補完関係 |
|---|
| Research Abstract |
A model has been created to estimate regional evaporation without the information of soil moisture even in an grid and semi-arid region. To check the validity of the model, observed evaporation at a taiga forest in Siberia, at tundra region of Siberia, at Tibet, complex surface of Thailand, evaporation estimated by a catchment water balance in a selected watershed in the world that has the area of 200-300 kms^2 was compared against the model derived evaporation on annual basis. The result indicates a very good agreement. However, a further investigation with daily evaporation bas revealed that agreement is not always good. Thailand data gave a good result, while Siberia data and Mongolian data did not produce as good result. Thus in summary, a model is capable of estimating evaporation on a time scale longer than month, while on daily basis a success depends on a location and condition
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