| Project/Area Number |
23510228
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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 |
Natural disaster science
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| Research Institution | Kyushu University |
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Principal Investigator |
WAKIMIZU KENJI 九州大学, (連合)農学研究科(研究院), 助教 (00240903)
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| Co-Investigator(Kenkyū-buntansha) |
NISHIYAMA Kouji 九州大学, 工学(系)研究科(研究院), 助教 (20264070)
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| Project Period (FY) |
2011 – 2013
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Fiscal Year 2013: ¥260,000 (Direct Cost: ¥200,000、Indirect Cost: ¥60,000)
Fiscal Year 2012: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2011: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
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| Keywords | 人工降雨 / 水資源 / 渇水 / 積雲 / 液体炭酸 / 氷晶 / 対流雲 / 層状雲 / 気象レーダー / レーダーエコー / 干ばつ害 |
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| Research Abstract |
Because of the impact of global warming, many droughts have broken out by extreme small amount rainfall in recent Japan. So as to solve these problems, new artificial rainfall method using the liquid carbon dioxide (LCD) was proposed by Fukuta (1996). This new method consists of the generation of ice particles by homogeneous nucleation using LCD and the subsequent more effective growth for ice particles without competition process. In our study,the three LCD seeding experiments were applied to the super-cooled clouds (strata) formed over Karatsu City in the northern part of Kyushu, Japan on December 26, 2013. Each time of the experiments was 120 seconds, and each seeding rate of LCD was 11.1g/s. And, the seeding height was 2500m to 2650m. The thickness of cloud was about 2600m. About 45 min. after seeding the JMA radar echoes appeared.These echoes moved to from SW to NE for 35min.. We verified that it rained from these echoes. We could succeeded the stratus.
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