| Project/Area Number |
10354007
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| Research Category |
Grant-in-Aid for Scientific Research (A).
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| Allocation Type | Single-year Grants |
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| Section | 展開研究 |
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| Research Field |
Meteorology/Physical oceanography/Hydrology
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| Research Institution | KYOTO UNIVERSITY |
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Principal Investigator |
FUKAO Shoichiro Kyoto University, RASC, Professor, 宙空電波科学研究センター, 教授 (30026249)
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| Co-Investigator(Kenkyū-buntansha) |
YAMANAKA Manabu Kobe University, Graduate School of Science and Tech., Professor, 自然科学研究科, 教授 (30183982)
YAMAMOTO Mamoru Kyoto University, RASC, Associate Professor, 宙空電波科学研究センター, 助教授 (20210560)
HASHIGUCHI Hiroyuki Kyoto University, RASC, Research Associate, 宙空電波科学研究センター, 助手 (90293943)
WATANABE Akira Fukushima University, Faculty of Education, Professor, 教育学部, 教授 (70114006)
WATANABE Shinichiro Mitsubishi Electric Corporation, Manager, 通信機製作所, 課長(研究職)
中村 卓司 京都大学, 超高層電波研究センター, 助教授 (40217857)
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| Project Period (FY) |
1998 – 2000
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| Project Status |
Completed (Fiscal Year 2000)
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| Budget Amount *help |
¥32,600,000 (Direct Cost: ¥32,600,000)
Fiscal Year 2000: ¥4,400,000 (Direct Cost: ¥4,400,000)
Fiscal Year 1999: ¥16,200,000 (Direct Cost: ¥16,200,000)
Fiscal Year 1998: ¥12,000,000 (Direct Cost: ¥12,000,000)
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| Keywords | Atmospheric radar / L-band / Transportable / Lower troposphere / Phased array / RASS |
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| Research Abstract |
The purpose of this study is to develop an L-band lower troposphere radar (LTR) to observe the atmosphere in the whole lower troposphere.
We first designed radar system, and developed a phased array antenna with a relatively large size of 4m×4m. Next transmitters, having the output power of 2kW, the band-width of 10 MHz, and the maximum duty ratio of 20%, were developed. The LTR was installed at the Shigaraki MU Observatory in 1999. We conducted simultaneous observations with the MU radar, a boundary layer radar, a Doppler sodar, an anemometer etc., and confirmed the reliability of the LTR observations. We developed RASS (Radio Acoustic Sounding System) using the LTR and eight speakers. Temperature profiles obtained by LTR/RASS were compared with radiosonde data launched at the MU Observatory. We investigated diurnal and seasonal variations of wind velocities and turbulence intensities obtained by the LTR.
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