2021 Fiscal Year Final Research Report
Monitoring and forecasting of extreme weather and lightning disasters by combining radio wave and high-speed meteorological radar observations of thunderstorms
| Project/Area Number |
19H01979
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Review Section |
Basic Section 17030:Human geosciences-related
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| Research Institution | The University of Electro-Communications |
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Principal Investigator |
Hobara Yasuhide 電気通信大学, 大学院情報理工学研究科, 教授 (10303009)
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| Co-Investigator(Kenkyū-buntansha) |
菊池 博史 電気通信大学, 宇宙・電磁環境研究センター, 助教 (40783105)
牛尾 知雄 大阪大学, 工学研究科, 教授 (50332961)
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| Project Period (FY) |
2019-04-01 – 2022-03-31
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| Keywords | トータル雷 / 極端気象 / 電波観測 / フェーズドアレイレーダ / 災害監視・予測 |
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| Outline of Final Research Achievements |
In this study, simultaneous observations of thunderstorm activities using phased radar with the highest spatiotemporal resolution and X-band MP radar data in Japan and multi-frequency radio waves of lightning discharges were used to derive the meteorological characteristics of extreme weather events and highly energetic lightning discharges and thunderstorms. Although the corona disaster caused considerable delays in the construction of the lightning observation network and the start of observations, we succeeded in detecting cases of both types of extreme events and were able to carry out initial data analysis, so the initial research objectives were achieved and significant scientific research results have been obtained. Further results are expected in the future, as scientific papers related to this research will be published, and continuous observations using the established observation network.
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| Free Research Field |
地球・宇宙電磁環境、大気電気学、災害監視予測、宇宙プラズマ理工学、地震電磁気学
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| Academic Significance and Societal Importance of the Research Achievements |
地球温暖化のため、全世界的に豪雨やそれらに伴う強力な雷放電をはじめとした極端気象災害が頻発しており、我々の社会生活への大きな脅威となっている。本事象は、短時間に発達するため予測が困難である。本研究では、事象の発生機構や短時間予測への有効性が示されている、雷放電との関係性を世界最高の観測速度を有する気象レーダを用いて詳細に調査した。その結果、雷と気象条件の間に有意な関連性が得られたことから、将来の極端気象災害の軽減が大いに期待されるとともに、本観測の今後の重要性が明確に認識された。
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