2009 Fiscal Year Final Research Report
Long-term variations of the atmosphere dynamics in the mesosphere and lower-thermosphere region in the tropics
| Project/Area Number |
19403009
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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 | 海外学術 |
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| Research Field |
Meteorology/Physical oceanography/Hydrology
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| Research Institution | Kyoto University |
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Principal Investigator |
TSUDA Toshitaka Kyoto University, 生存圏研究所, 教授 (30115886)
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| Co-Investigator(Kenkyū-buntansha) |
KODAMA Yasumasa 弘前大学, 大学院・理工学研究科, 准教授 (30205421)
SHIBAGAKI Yoshiaki 大阪電気通信大学, 大学院・工学研究科, 准教授 (00319592)
FURUMOTO Jun-ichi 京都大学, 生存圏研究所, 助教 (10402934)
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| Co-Investigator(Renkei-kenkyūsha) |
NAKAMURA Takuji , 国立極地研究所, 教授 (40217857)
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| Project Period (FY) |
2007 – 2009
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| Keywords | 中間圏・熱圏下部 / インドネシア / 大気波動 / 中波帯(MF)レーダー / 流星レーダー |
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| Research Abstract |
We observed wind velocity in the mesosphere and lower thermosphere (MLT) region at 70-110km altitude, by means of a meteor radar and two medium frequency (MF) radars that are operated in the tropics under international collaboration between Japan, Indonesia and Australia. Statistical analyses of the radar data clarified quasi-biennial and semi-annual oscillations in the zonal winds. The mean meridional flow showed a decadal scale trend, which could be related with the global warming and/or a solar cycle.
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[Journal Article] Longitudinal variability in intra-seasonal oscillation in the tropical mesosphere and lower thermosphere region2009
Author(s)
Rao., R.K., S. Gurubaran, S. Sathishkumar, S. Sridharan, T. Nakamura, T. Tsuda, H. Takahashi, P. Batista, B.R. Clemesha, R.A. Buriti, D.V. Pancheva, N.J. Mitchell
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Journal Title
J. Geophys. Res. 114
Pages: doi:10. 1029/2009JD011811
Peer Reviewed
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[Journal Article] Seasonal variation of short-period (<2 hr) gravity wave activity over Gadanki, India (13. 5N, 79. 2E)2008
Author(s)
Dutta, G., Tsuda, T., Kumar, P.V., Kumar, M.C. A, Alexander, S.P., Kozu, T.
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Journal Title
J. Geophys. Res. 113
Pages: doi:10. 1029/2007JD009178
Peer Reviewed
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[Presentation] 1. 3-GHzウインドプロファイラ及びTRMM降雨レーダー観測による海洋大陸における地域的降水日変化2009
Author(s)
田畑悦和, 橋口浩之, 山本真之, 山本衛, 山中大学, 森修一, 柴垣佳明, 下舞豊志, F. Syamsudin, T. Manik, Erlansyah, W. Setiawan, W. Laasut
Organizer
日本気象学会2009年度秋季大会
Place of Presentation
福岡市
Year and Date
20091125-20091127
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