| Project/Area Number |
22540448
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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 |
Meteorology/Physical oceanography/Hydrology
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| Research Institution | Nagoya University |
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Principal Investigator |
MINDA Haruya 名古屋大学, 地球水循環研究センター, 技術専門職員 (80422765)
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| Co-Investigator(Kenkyū-buntansha) |
TSUDA Norio 愛知工業大学, 工学部, 教授 (20278229)
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| Project Period (FY) |
2010 – 2012
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| Project Status |
Completed (Fiscal Year 2012)
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| Budget Amount *help |
¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2012: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2011: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2010: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
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| Keywords | 気象学 / 自然現象観測 / 計測工学 |
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| Research Abstract |
Toward ballooning precipitation observation, we developed a new low-cost hydrometeor imaging probe, whose cost is nearly 10,000 Japanese yen. The probe is a sort of high-speed line-scanner, and it captures hydrometeor monochrome image with 128 horizontal pixels of 125 μm resolution and the slice-rate of 33 kHz currently. On the ground-base observation, the probe performs good as a disdrometer measuring raindrop-size distributions (DSD). For the DSD validation, we employed a commercially available disdrometer of Distromet RD80, then the validation demonstrates that the probe captures similar DSD shapes as in RD80. The results ensure a capture rate for raindrops to express reasonable DSD shape. In winter seasons, the probe well performed in low-temperature environment of -25 0 deg C and it successfully captured solid-state hydrometeors image such as snowflakes and graupels. In addition, the probe stably performed in a long period observation for several months, even if the probe is designed as disposal operation.
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