Research field (6)：
Space and planetary science
, Environmental dynamics
, Disaster prevention engineering
, Atmospheric and hydrospheric science
, Solid earth science
, Geography
Research theme for competitive and other funds (36)：
2021 - 2026 Identification of UV absorbers and derivation of solar heating rate as driving sources of atmospheric circulation of Venus
2021 - 2025 Precise monitoring and prediction of typhoon based on high resolution 3D cloud imaging and lightning observation
2021 - 2024 Study of relationship between global electric circuit and clouds
2019 - 2021 3-D structure of thundercloud estimated by imaging on the ground and from micro-satellite
2015 - 2018 A study on temporal variation of the Venus atmosphere using a circumpolar stratospheric telescope FUJIN
2013 - 2016 Urban thunderstorms over the Indonesian maritime continent: Their climatology and mesoscale dynamics observed with multiple radars
2013 - 2016 Study on relationship between strong rainfall and local circulation in the Fukui plain
2013 - 2016 Observational investigation for effects of the lightning discharges in South-east Asia on the D/E-region ionosphere
2012 - 2016 Prediction of torrential rainfall using lightning observation network in Asia
2012 - 2016 Identification of the occurrence conditions and mechanisms of transient luminous events from space- and ground-based observations
2013 - 2015 Development of polarization camera for micro-satellite and drone
2012 - 2015 Study on the Venusian atmosphere by a circumpolar stratospheric telescope
2011 - 2014 Long-term changes of precipitation intensity in monsoon Asia
2011 - 2014 Network observations of raindrop size distribution over Indonesian maritime continent
2007 - 2009 Investigations on TLEs and TGFs using micro-satellite and ground observation network
2006 - 2009 Comprehensive research on magnetosphere -ionosphere-thermosphere-mesosphere coupling process using the EISCAT radars and other instruments
2006 - 2008 火山噴煙のリモートセンシングに関する新手法の開発
2006 - 2008 地球起源ガンマ線の生成メカニズムの解明
2005 - 2008 マイクロサテライトが拓くスプライト及び雷放電逃走電子の科学
2006 - 2007 衛星と地上観測による雷雲上方の放電発光現象の研究
2005 - 2007 Observational study of Venus atmosphere dynamics
2005 - 2006 Study on planetary atmospheres and plasmas by a balloon-borne telescope
2003 - 2005 Evaluation of the effects of global lightining activity on the middle/upper atmosphere and atmosphere and the ionosphere/magnetosphere
2001 - 2003 Energy coupling between atmosphere and inosphere via electrical descharge
2000 - 2002 Ground-based infrared measurements of the Venus atmosphere with a Fourier transform spectrometer and a laser heterodyne spectrometer
2000 - 2002 Studies on magnetospheric boundary processes based on magnetic field and aurora observation in the northern and southern polar caps
2000 - 2001 Observation of Jovian Visible Aurora and its Generation Mechanism
1998 - 2000 Processes of optical and radio emissions in the upper atmosphere induced by cloud to ground discharge
1999 - 1999 惑星大気研究を推進させるための基礎調査
1997 - 1999 Joint Study on the M-I Coupling in the Southern Polar Cap
1997 - 1999 Studies of the morphology and the hetelogeneous reactions of Arctic PSC over Spitsbergen
1996 - 1998 北方圏における地球環境変動に関する共同研究
1996 - 1997 Lightning Induced Optical Emissions in the Middle Atmosphere
1995 - 1997 A study on planetary atmosphere by the laser heterodyne spectroscopy
1996 - 1996 雷放電に伴う中間圏・下部電理圏発光現象の研究
1995 - 1996 Joint study on Polar Cap Disturbances Using AGO Network
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Papers (104)：
Masataka Imai, Junichi Kurihara, Toru Kouyama, Toshinori Kuwahara, Shinya Fujita, Yuji Sakamoto, Yuji Sato, Sei-Ichi Saitoh, Takafumi Hirata, Hirokazu Yamamoto, et al. Radiometric Calibration for a Multispectral Sensor Onboard RISESAT Microsatellite Based on Lunar Observations. Sensors. 2021. 21. 7. 2429-2429
Takahashi Y., Imai M., Sato M. Road to the first star: Venus orbiter from Japan (46) - LAC detected lightning flash in Venus? -. Planetary People - The Japanese Society for Planetary Sciences. 2021. 30. 2. 72-73
Optical characteristics of elves observed by FORMOSAT-2/ISUAL and properties of parent lightning discharges
(International Association of Meteorology and Atmospheric Sciences (IAMAS) 2005 meeting)
Characteristics of TLEs observed by ISUAL/AP onboard FORMOSAT-2
(American Geophysical Union (AGU) 2006 Fall meeting)
SPRITE-SAT mission for sprites and TGFs studies
(European Geoscience Union general assembly)
Lifetime and structures of TLEs captured by high-speed camera on board aircraft
(American Geophysical Union 2012 Fall Meeting)
Role and Scope of Asian Micro-satellite Consortium
(34th Asia Conference on Remote Sensing “Applications of remote sensing technology on tropical peatlands”)
