| Project/Area Number |
24654154
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Meteorology/Physical oceanography/Hydrology
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| Research Institution | Osaka Kyoiku University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
HIRASAWA Naohiko 国立極地研究所, 助教 (10270422)
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2014: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2012: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Keywords | 降雪量観測 / 降雪粒子 / 粒径分布 / 極域 / 降雪量 / 測定法 / 氷晶 / 光学式雨量計 |
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| Outline of Final Research Achievements |
Aiming to measure the snowfall rate more exactly, simultaneous observations (1) several optical snow particle sensors and (2) a microscope camera for snow particles were carried out at three winter seasons at Rikubetsu, Hokkaido, where the one of the coldest town in Japan. The results show that the measured snowfall rate was more exactly, when a lot of snow particles larger than 1mm were observed, whereas it was difficult to estimate snowfall rate exactly in case of the weak snowfall that consist of mostly small snow particles less than 0.5mm. Snow particles photographs were automatically taken by a newly developed device with a USB microscope camera.
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