Snowfall thunderclouds observations around Hokuriku area in consideration of electrical and terrain effects
| Project/Area Number |
16K05555
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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 |
Meteorology/Physical oceanography/Hydrology
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| Research Institution | Kobe City College of Technology |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
森本 健志 近畿大学, 理工学部, 准教授 (60403169)
本吉 弘岐 国立研究開発法人防災科学技術研究所, 雪氷防災研究部門, 主任研究員 (70571462)
酒井 英男 富山大学, 大学院理工学研究部(理学), 名誉教授 (30134993)
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| Project Period (FY) |
2016-04-01 – 2019-03-31
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| Project Status |
Completed (Fiscal Year 2018)
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| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2018: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2017: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2016: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
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| Keywords | 冬季雷 / リモートセンシング / 冬季雷観測 / 大気電気学 / 降雪雲 |
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| Outline of Final Research Achievements |
To study the relationship between lightning activity and snow cloud mode, we classified snowfall clouds into three types by their shapes and radar echo motions: (1) L-mode clouds that develop parallel to the wind direction, (2) T-mode clouds that develop perpendicular to the wind direction, and (3) V-mode clouds that is strongest spiral convection cloud in the JPCZ.
Based on lightning flash rate, L-mode clouds is higher than T-mode clouds in lightning activity. L-mode clouds could be divided into those with and without lightning. Our observations suggest that the JPCZ greatly influences lightning activities in Hokuriku.
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| Academic Significance and Societal Importance of the Research Achievements |
北陸地域の冬季雷活動は「雪おこし」や「鰤おこし」などと呼ばれるとおり，冬の初めに活発で，真冬には雷活動が低いことが知られている．冬季雷活動による落雷被害も深刻であり，雷活動を含めた積乱雲の解明が求められている．冬季落雷の親雲である雪雲をその要因別に解析することで，落雷に対する警戒の指標を提供しうるものとなる．また，シーズンにより雷活動の活発度が異なるため，観測事例を蓄積することが大気電気学分野で有効である．
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Report
(4 results)
Research Products
(11 results)
