Investigation of 3-Dimensional Dynamics of Cumulonimbus using Multi-Frequency High-Resolution Radars and Surface Dense Observation Network
| Project/Area Number |
18H01288
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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 | Chiba University |
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Principal Investigator |
TAKANO Toshiaki 千葉大学, 大学院工学研究院, 名誉教授 (40183058)
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| Co-Investigator(Kenkyū-buntansha) |
小林 文明 防衛大学校(総合教育学群、人文社会科学群、応用科学群、電気情報学群及びシステム工学群), 応用科学群, 教授 (80202068)
樋口 篤志 千葉大学, 環境リモートセンシング研究センター, 准教授 (90324384)
中田 裕之 千葉大学, 大学院工学研究院, 准教授 (30345011)
大矢 浩代 千葉大学, 大学院工学研究院, 助教 (00241943)
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| Project Period (FY) |
2018-04-01 – 2021-03-31
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| Project Status |
Completed (Fiscal Year 2021)
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| Budget Amount *help |
¥17,420,000 (Direct Cost: ¥13,400,000、Indirect Cost: ¥4,020,000)
Fiscal Year 2020: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2019: ¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Fiscal Year 2018: ¥7,930,000 (Direct Cost: ¥6,100,000、Indirect Cost: ¥1,830,000)
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| Keywords | 気象災害 / 積乱雲 / ゲリラ豪雨 / 大気現象 / リモートセンシング / 雲レーダ / ミリ波レーダ / 自然災害予測・分析 / 局所豪雨 / 高分解能レーダ / ミリ波 / 降水バンド / 雲レーダー / ミリ波レーダー / 高感度レーダ |
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| Outline of Final Research Achievements |
Rain drops generated intermittently in the cloud bottom and precipitating were observed with the high spatial and temporal resolution W band cloud profiling radar. The sizes of these rain drops are calculated assuming the falling velocities are terminal velocities. These analyses present an example of generation and growing process of rain drops in clouds. High spatial and temporal resolution observations using the X band phased array weather radar revealed generation and evolution of a tornado in a cumulonimbus with its 3-dimensional structures. Dense ground surface observation network with compact weather stations revealed shapes and their development of downbursts associate with a cumulonimbus with temperature drop, low pressure areas, and wind velocities and directions.
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| Academic Significance and Societal Importance of the Research Achievements |
ゲリラ豪雨や竜巻などの局所的激変現象の発生メカニズム解明には、その母体である積雲・積乱雲の発生初期の内部微細構造を観測することが重要である。本研究では、高い空間・時間分解能を持つ Wバンド(95GHz)、Xバンド(9.4GHz)レーダと地上稠密観測を組み合わせて、積乱雲に伴う竜巻およびダウンバーストの発生・発達と雲内部の雨滴生成・発達の詳細について研究成果が得られた。これらの成果は、近年その頻度が増加し被害も増大している、積乱雲に伴う気象激変現象のメカニズムを解明することに学術的に寄与し、また激変現象の予測精度を向上させ被害を抑えることに寄与できる点で社会的意義がある。
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Report
(4 results)
Research Products
(109 results)
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[Journal Article] Imager’s Specification Considerations for Next Generation HIMAWARI GEO (NGG) by Mission Investigation Team (MInT)2021
Author(s)
樋口篤志, 本多嘉明, 中島孝, 石坂丞二, 弓本桂也, 堀之内武, 中島正勝, 木村俊義, 橋本真喜子, 棚田和玖, 村上浩
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Journal Title
Journal of The Remote Sensing Society of Japan
Volume: 41
Issue: 4
Pages: 461-468
DOI
NAID
ISSN
0289-7911, 1883-1184
Year and Date
2021-09-20
Related Report
Peer Reviewed / Open Access
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[Journal Article] ULF Modulation of Energetic Electron Precipitation Observed by VLF/LF Radio Propagation2020
Author(s)
Miyashita, T., H. Ohya, F. Tsuchiya, A. Hirai, M. Ozaki, K. Shiokawa, Y. Miyoshi, N. Nishitani, M. Teramoto, Martin Connors, S. G. Shepherd, Y. Kasahara, A. Kumamoto, M. Shoji, I. Shinohara, H. Nakata, and T. Takano
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Journal Title
Radio Science Bulletin
Volume: 3
Pages: 1-6
Related Report
Peer Reviewed / Int'l Joint Research
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[Journal Article] Periodic oscillations in the D region ionosphere after the 2011 Tohoku earthquake using LF standard radio waves2018
Author(s)
Ohya, H., Tsuchiya, F., Takishita, Y., Shinagawa, H., Nozaki, K., and Shiokawa, K
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Journal Title
Journal of Geophysical Research: Space Physics
Volume: 123
Issue: 6
Pages: 1-6
DOI
Related Report
Peer Reviewed
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[Presentation] Study of cloud effects on atmospheric electric field during lightning activities and snowfall using the 95-GHz cloud radar FALCON-I2019
Author(s)
Ohya, H., K. Nakamori, M. Kamogawa, T. Suzuki, T. Takano, K. Morotomi, H. Nakata, and K. Shiokawa
Organizer
Japan Geoscience Union (JpGU) Meeting 2019, MIS05-10, Chiba (Japan)
Related Report
Int'l Joint Research / Invited
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[Presentation] Oscillations of Atmospheric Electric Field during around Tokyo, Japan, with the 95-GHzCloud Radar FALCON-I2019
Author(s)
Ohya, H., K. Nakamori, M. Kamogawa, T. Suzuki, T. Takano, K. Morotomi, H. Nakata, and K. Shiokawa
Organizer
27th International Union of Geodesy and Geophysics (IUGG) General Assembly 2019, Montreal (Canada)
Related Report
Int'l Joint Research
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[Presentation] Long-term dataset of geostationary meteorological satellites can contribute climate change studies: Archiving status in CEReS, Chiba University, Japan, and its utilizations2019
Author(s)
Higuchi, A., K. Toyoshima, H. Takenaka, H. Hirose, K. Ichii, K.T. Murata, T. Y. Nakajima, T. Nakajima, H. Hashimoto, R. R Nemani, K. Muranaga, T. Takano, F. Kobayashi, Y. Yamamoto, P. Pavarangkoon, K. Yamamoto, K. Morotomi, S. Shimamura and T. Kawanabe
Organizer
2019 AGU Fall Meeting, A33G-03, San Francisco (USA)
Related Report
Int'l Joint Research
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[Presentation] Generation of Rain Drops at Cloud Bottom Observed with W-band Cloud Radar FALCON-I2019
Author(s)
HIKAWA Keisuke, IURA Taichi, MORITA Hyuga, FUEDA Ryo, KAWAMURA Yohei,?TAKANO Toshiaki, HIGUCHI Atsushi, TAKAMURA Tamio, KOBAYASHI Fumiaki,?MOROTOMI Kazuomi, SHIMAMURA Shigeharu, IWASHITA Hisato
Organizer
AMS 39th International Conference on Radar Meteorology, P 2-45, Nara (Japan)
Related Report
Int'l Joint Research
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[Presentation] Interaction between Cloud Particles and Winds Observed with W-band Cloud Profiling Doppler Radar FALCON-I and Wind Profiler2019
Author(s)
TAKANO Toshiaki, FUEDA Ryo, MORITA Hyuga, HIKAWA Keisuke, ARAI Tomohiro, KAWAMURA Yohei,?OHYA Hiroyo, NAKATA Hiroyuki, YAMAMOTO Masayuki, and KAWAMURA Seiji
Organizer
AMS 39th International Conference on Radar Meteorology, P 3-19, Nara (Japan)
Related Report
Int'l Joint Research
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[Presentation] ULF Modulation of Energetic Electron Precipitation Observed by VLF/LF Radio Propagation2019
Author(s)
Miyashita, T., H. Ohya, F. Tsuchiya, A. Hirai, M. Ozaki, K. Shiokawa, Y. Miyoshi, N. Nishitani, M. Teramoto, Martin Connors, S. G. Shepherd, Y. Kasahara, A. Kumamoto, M. Shoji, I. Shinohara, H. Nakata, and T. Takano
Organizer
International Union of Radio Science (URSI)-Japan Radio Science Meeting (JRSM), SPC-5
Related Report
Int'l Joint Research
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[Presentation] Oscillations of atmospheric electric field during snowfall in the Kanto region, Japan, using 95-GHz cloud radar FALCON-I2018
Author(s)
Ohya, H., K. Nakamori, M. Kamogawa, T. Suzuki, T. Takano, K. Morotomi, H. Nakata, and K. Shiokawa
Organizer
第144回地球電磁気・地球惑星圏学会講演会
Related Report
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