Radar system network at high resolution

• Project/Area Number: 19201036
• Research Category: Grant-in-Aid for Scientific Research (A)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Natural disaster science
• Research Institution: Osaka University
• Principal Investigator: KAWASAKI Zenichiro (KAWASAKI Zen-ichiro) Osaka University, 工学研究科, 教授 (60126852)
• Co-Investigator(Kenkyū-buntansha): TOMOO Ushio 大阪大学, 工学研究科, 准教授 (50332961) ; TAKESHI Morimoto 大阪大学, 工学研究科, 講師 (60403169)
• Project Period (FY): 2007 – 2010
• Project Status: Completed (Fiscal Year 2010)
• Budget Amount: ¥48,750,000 (Direct Cost: ¥37,500,000、Indirect Cost: ¥11,250,000); Fiscal Year 2010: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000); Fiscal Year 2009: ¥8,190,000 (Direct Cost: ¥6,300,000、Indirect Cost: ¥1,890,000); Fiscal Year 2008: ¥13,520,000 (Direct Cost: ¥10,400,000、Indirect Cost: ¥3,120,000); Fiscal Year 2007: ¥22,620,000 (Direct Cost: ¥17,400,000、Indirect Cost: ¥5,220,000)
• Keywords: レーダ / 大気電気学 / 気象学 / 観測ネットワーク / 雷放電 / 自然災害予測・分析・対策 / 積乱雲 / 雷 / 自然現象観測

Research Abstract

A high-resolution precipitation and lightning monitoring system was developed and operated. This monitoring is mainly utilized the Ku-band broadband radar (BBR) and the VHF broadband digital interferometer (DITF). The BBR can accurately measure the radar reflectivity factor and the mean Doppler velocity with 5 m resolution over a range from 40 m to several kilometers for 10 W power using a pulse compression technique. Two or more DITFs make us visualize lightning channel propagations in three dimensions. Moreover, we add new functions that integrate these observation data and disclose integration analyses results with the quasi real-time information disclosure system. Initial observations for severe storms with lightning during summer and winter thunderstorm season by these monitoring instruments indicate that we obtain detailed precipitation distribution and detect active convective cells with lightning discharges.

Research Products

• [Journal Article] Effects of charge distribution in thunderstorms on lightning progression paths in Darwin, Australia (2011)
  • Author(s): Akita M., Y.Nakamura, S.Yoshida, T.Morimoto, T.Ushio, Z-I.Kawsaki, D.Wang
  • Journal Title: J.Atmos.Sci. Vol.68, No.4 Pages: 719-726
• [Journal Article] Vertical structure of raindrop size distribution in lower atmospheric boundary layer (2010)
  • Author(s): Yoshikawa E., S.Kida, S.Yoshida, T.Morimoto, T.Ushio, Z.Kawasaki
  • Journal Title: Geophys.Res.Lett. 37, L20802
• [Journal Article] Development and Initial Observation of High Resolution Volume Scanning Radar for Meteorological Application (2010)
  • Author(s): Yoshikawa E., Tomoaki Mega, Takeshi Morimoto, Tomoo Ushio, Zen Kawasaki, Katsuyuki Imai, Shin'ichiro Nagayama
  • Journal Title: IEEE Trans.Geosci.Remote Sens. VOL.48, NO.8 Pages: 3225-3235
• [Journal Article] Lightning Channels of Cloud-to-ground Flashes Neutralizing Multiple Charge Regions inside Winter Thunderstorms (2010)
  • Author(s): Akita M., S.Yoshida, Y.Nakamura, T.Morimoto, T.Ushio, Z-I.Kawasaki, D.Wang
  • Journal Title: IEEJ Trans Vol.130-A, No.5 Pages: 467-472
• [Journal Article] What Occurs in K-process of Cloud Flashes? (2010)
  • Author(s): Akita M., Y.Nakamura, S.Yoshida, T.Morimoto, T.Ushio, Z.Kawasaki, D.Wang
  • Journal Title: J.Geophys.Res. 115
• [Journal Article] VHF 波帯広帯域干渉計で観測された夏季正極性落雷の特性 (2010)
  • Author(s): 中村佳敬, 秋田学, 森本健志, 牛尾知雄, 河崎善一郎, 清水雅仁
  • Journal Title: IEEJ Trans Vol.130-A, No.4 Pages: 377-386
  • NAID: 10026225717
• [Journal Article] Three-dimensional imaging of upward leaders in triggered lightning using VHF broadband digital interferometers, Geophys. (2010)
  • Author(s): Yoshida, S., C.J.Biagi, V.A.Rakov, J.D.Hill, M.V.Stapleton, D.M.Jordan, M.A.Uman, T.Morimoto, T.Ushio, Z-I.Kawasaki
  • Journal Title: Res.Lett. VOL.37
• [Journal Article] 雷放電と積乱雲の高分解能観測技術とその科学 (2010)
  • Author(s): 牛尾知雄, 吉川栄一, 秋田学, 中村佳敬, 森本健志, 河崎善一郎
  • Journal Title: IEEJ Vol.130-A, No.1 Pages: 10-14
  • NAID: 10030776946
• [Journal Article] Three-Dimensional imaging of upward positive leaders in triggered lightning using VHF broadband digital interferometers (2010)
  • Author(s): Yoshida, et al.
  • Journal Title: Geophys.Res.Lett 37
  • Peer Reviewed
• [Journal Article] High-resolution Lightning and Precipitation Monitoring by the Ku-band Broadband Radar and the VHF Broadband Digital Interferometer (2009)
  • Author(s): Nakamura Y., E.Yoshikawa, M.Akita, T.Morimoto, T.Ushio, Z.Kawasaki, T.Saito, T.Nishida, N.Sakazume
  • Journal Title: IEEJ Trans Vol.129-A, No.12 Pages: 845-852
• [Journal Article] 雷嵐観測用VHF 帯広帯域干渉計の標定精度評価 (2009)
  • Author(s): 中村佳敬, 森本健志, 牛尾知雄, 河崎善一郎
  • Journal Title: IEEJ Trans Vol.129-A, No.8 Pages: 525-530
• [Journal Article] Real-Time spectral moments estimation and ground clutter suppression for precipitation radar with high resolution (2009)
  • Author(s): Yoshikawa E., T.Mega, T.Morimoto, T.Ushio, Z-I.Kawasaki
  • Journal Title: IEICE Trans.Commun. Vol.E92-B, No.2 Pages: 578-584
  • NAID: 10026835899
• [Journal Article] Evidence of negative leaders prior to fast rise ICC pulses of upward lightning (2009)
  • Author(s): Yoshida S., M.Akita, Y.Nakamura, T.Morimoto, T.Ushio, Z-I.Kawasaki, D.Wang, N.Takagi
  • Journal Title: J.Atmos.Electr. Vol.29, No.1 Pages: 13-21
• [Journal Article] High-resolution Precipitation and Lightning Monitoring by the Ku-band Broadband Radar and the VHF Broadband Digital Interferometer (2009)
  • Author(s): Y. Nakamura, E. Yoshikawa, M. Akita, T. Morimoto, T. Ushio, Z. -I. Kawasaki, T. Saito, T. Nishida, N. Sakazume
  • Journal Title: IEEJ Transactions on Fundamentals and Materials vol. 129, no. 12 Pages: 845-852
  • NAID: 10026224553
  • Peer Reviewed
• [Journal Article] 雷嵐観測用VHF波帯広帯域干渉計の標定精度評価 (2009)
  • Author(s): 中村, 森本, 牛尾, 河崎
  • Journal Title: 電気学会論文誌A vol. 129, no. 8 Pages: 525-530
  • Peer Reviewed
• [Journal Article] Real-Time spectral moments estimation and ground clutter suppression for precipitation radar with high resolution (2009)
  • Author(s): E. Yoshikawa, T. Mega, T. Morimoto, T. Ushio, Z. Kawasaki
  • Journal Title: IEICE Transactions on Communications vol. E92-B, no. 2 Pages: 578-584
  • NAID: 10026835899
  • Peer Reviewed
• [Journal Article] 雷嵐観測用VHF帯広帯域干渉計の標定精度評価 (2009)
  • Author(s): 中村侍敬, 他
  • Journal Title: IEEJ Trans Vol.129-A Pages: 525-530
  • Peer Reviewed
• [Journal Article] High-resolution Lightning and Precipitation Monitoring by the Ku-band Broadband Radar and the VHF Broadband Digital Interferometer (2009)
  • Author(s): Nakamura, et al.
  • Journal Title: IEEJ Trans Vol.129-A Pages: 845-852
  • Peer Reviewed
• [Journal Article] Evidence of negative leaders prior to fast rise ICC pulses of upward lightning (2009)
  • Author(s): S. Yoshida
  • Journal Title: Journal of Atmospheric Electricity 29-1 Pages: 13-21
  • Peer Reviewed
• [Journal Article] Real-Time spectral moments estimation and ground clutter suppression for precipitation radar with high resolution (2009)
  • Author(s): E. Yoshikawa
  • Journal Title: IEICE Transactions on Communications E92-B-2 Pages: 578-584
  • Peer Reviewed
• [Journal Article] 雷嵐観測用VHF波帯広帯域干渉計の標定精度評価 (2009)
  • Author(s): 中村 佳敬
  • Journal Title: 電気学会論文誌A 129-8(印刷中)
  • Peer Reviewed
• [Journal Article] High energy photon and electron bursts associated with upward lightning strokes (2008)
  • Author(s): S. Yoshida
  • Journal Title: Geophysical Research Letters 35-L10804
  • Peer Reviewed
• [Journal Article] A low power high resolution broad-band radar using pulse compression technique for meteorological application (2007)
  • Author(s): Mega, T., K.Monden, T.Ushio, K.Okamoto, Z-I.Kawasaki, T.Morimoto
  • Journal Title: IEEE Geosci.Remote.Sens.Letters Vol.4, No.3 Pages: 392-396
• [Journal Article] A low-power high-resolution broad-band radar using pulse compression technique for meteorological application (2007)
  • Author(s): T. Mega, K. Monden, T. Ushio, K. Okamoto, Z. Kawasaki, T. Morimoto
  • Journal Title: IEEE Geoscience and Remote Sensing Letters vol. 4, no. 3 Pages: 392-396
  • Peer Reviewed
• [Journal Article] ENSO and convective activities in Southeast Asia and western Pacific (2007)
  • Author(s): S. Yoshida
  • Journal Title: Geophysical Research Letters 34
  • Peer Reviewed
• [Journal Article] A low power high resolution broad-band radar using pulse compression technique for meteorological application (2007)
  • Author(s): T. Mega
  • Journal Title: IEEE Geoscience and Remote Sensing Letters 4 Pages: 392-396
  • Peer Reviewed
• [Journal Article] Sprite lightning heard round the world by world by Schumann resonance methods (2007)
  • Author(s): E. R. Williams
  • Journal Title: Radio Science 42
  • Peer Reviewed
• [Presentation] Gradual approach to realize lightning monitoring from space by means of VHF observations (2010)
  • Author(s): T.Morimoto, H.Kikuchi, T.Ushio, Z.Kawasaki
  • Organizer: AGU fall meeting2010
  • Place of Presentation: San Francisco, U.S.A.
• [Presentation] Global characteristics between lightning activity and frozen hydrometeor from WWLLN and AMSU-B/MHS (2010)
  • Author(s): Nakamura, R.H.Holzworth, A.R.Jacobson, J.A.Weinman, L.A.McMurdie, H.Meng, R.R.Ferraro, T.Morimoto, T.Ushio, Z.Kawasaki
  • Organizer: AGU fall meeting 2010
  • Place of Presentation: San Francisco, U.S.A.
• [Presentation] Relationships between the Lightning Leader Progression Characteristics and Local Charge Structures in Thunderclouds (2010)
  • Author(s): M.Akita, S.Yoshida, T.Morimoto, T.Ushio, Z.Kawasaki, D.Wang
  • Organizer: AGU fall meeting 2010
  • Place of Presentation: San Francisco, U.S.A.
• [Presentation] Network Retrieval Technique for Precipitation Attenuation on Ku-band Broadband Radar Network (2010)
  • Author(s): Eiichi Yoshikawa, Satoru Yoshida, Takeshi Morimoto, Tomoo Ushio, Zen Kawasaki
  • Organizer: IEICE International Conference on Space Aeronautical and Navigational Electronics(255-259)
  • Place of Presentation: Jeju
• [Presentation] Initial Observation Results for Precipitation on the Ku-band Broadband Radar Network (2010)
  • Author(s): Eiichi Yoshikawa, Satoru Yoshida, Takeshi Morimoto, Tomoo Ushio, Zen Kawasaki
  • Organizer: IEICE International Conference on Space Aeronautical and Navigational Electronics,
  • Place of Presentation: Jeju
• [Presentation] A Study on the Effects of the Charge Distributions on Lightning Leader Progressions Using the VHF Broadband Digital Interferometer (2010)
  • Author(s): M.Akita, S.Yoshida, T.Morimoto, T.Ushio, Z.Kawasaki
  • Organizer: IEICE Tech.Rep.(vol.110, no.250 20SANE2010-71)
  • Place of Presentation: Jeju, Korea
• [Presentation] The Relationship between the leader progressions and the charge distributions (Invited) (2010)
  • Author(s): Akita, M., T.Morimoto, T.Ushio, Z-I.Kawasaki, D.Wang
  • Organizer: Asia Pacific Radio Science Conference (AP-RASC 2010), E3-4
  • Place of Presentation: Toyama Japan
• [Presentation] Rocket-triggered lightning observed by VHF broadband digital interferometers (2009)
  • Author(s): Yoshida, et al.
  • Organizer: AGU Fall Meeting
  • Place of Presentation: San Francisco USA
  • Year and Date: 2009-12-15
• [Presentation] The bi-directional leader observation in positive cloud-to-ground lightning flashes during summer thunderstorm season (2009)
  • Author(s): Nakamura, et al.
  • Organizer: AGU Fall Meeting
  • Place of Presentation: San Francisco USA
  • Year and Date: 2009-12-15
• [Presentation] VHF波帯広帯域デジタル干渉計とKu帯広帯域レーダを用いた雷嵐に対する初期観測結果 (2009)
  • Author(s): 吉川, 秋田, 中村, 森本, 牛尾, 河崎
  • Organizer: 日本気象学会2009年度秋季大会
  • Place of Presentation: 福岡
  • Year and Date: 2009-11-27
• [Presentation] VHF波帯広帯域ダジタル干渉計とKu帯広帯域レーダを用いた雷嵐に対する初期観測結果 (2009)
  • Author(s): 古川, 他
  • Organizer: 気象学会
  • Place of Presentation: 福岡
  • Year and Date: 2009-11-27
• [Presentation] Evaluation of high resolution precipitation profiles obtained by Ku-band broad band radar (2009)
  • Author(s): E. Yoshikawa, K. Imai, T. Morimoto, T. Ushio, Z. Kawasaki
  • Organizer: International Symposium on Radar and Modeling Studies of the Atmosphere
  • Place of Presentation: Kyoto, Japan
  • Year and Date: 2009-11-11
• [Presentation] Evaluation of high resolution precipitation profiles obtained by Ku-band broad band radar (2009)
  • Author(s): Yoshikawa, et al.
  • Organizer: International Symposium on Radar and Modeling Studies of the Atmosphere
  • Place of Presentation: Kyoto
  • Year and Date: 2009-11-11
• [Presentation] Observations of bipolar lightning flashes using the VHF broadband digital interferometer (2009)
  • Author(s): M. Akita, S. Yoshida, T. Morimoto, T. Ushio, Z. Kawasaki
  • Organizer: International Symposium on Electromagnetic Compatibility
  • Place of Presentation: Kyoto, Japan
  • Year and Date: 2009-07-24
• [Presentation] Three-dimensional VHF Observations of positive cloud-to-ground flashes in summer thunderstorm (2009)
  • Author(s): Nakamura, et al.
  • Organizer: International Symposium on Electromagnetic Compatibility
  • Place of Presentation: Kyoto
  • Year and Date: 2009-07-24
• [Presentation] Observations of Bipolar Lightning Flashes Using the VHF Broadband Digital Interferometer (2009)
  • Author(s): Akita, et al.
  • Organizer: International Symposium on Electromagnetic Compatibility
  • Place of Presentation: Kyoto
  • Year and Date: 2009-07-24
• [Presentation] Ku帯広帯域レーダを用いた低高度における降水分布の解析 (2009)
  • Author(s): 古川, 他
  • Organizer: 気象学会
  • Place of Presentation: つくば
  • Year and Date: 2009-05-28
• [Presentation] Spider-like cloud flash observation using VHF broadband digital interferometer (2009)
  • Author(s): Nakamura, et al.
  • Organizer: 日本地球惑星科学連合2009年大会
  • Place of Presentation: 幕張
  • Year and Date: 2009-05-20
• [Presentation] Charge distributions for cloud-to-ground flashes with horizontally long leaders (2009)
  • Author(s): Akita, et al.
  • Organizer: 日本地球惑星科学連合2009年大会
  • Place of Presentation: 幕張
  • Year and Date: 2009-05-20
• [Presentation] Development and observation of Ku-band broad band radar for meteorological application (2009)
  • Author(s): Yoshikawa, et al.
  • Organizer: 日本地球惑星科学連合2009年大会
  • Place of Presentation: 幕張
  • Year and Date: 2009-05-20
• [Presentation] 気象用Ku帯広帯域レーダにおける方位角圧縮手法の検討 (2009)
  • Author(s): 青木 政利
  • Organizer: 電子情報通信学会2009年総合大会
  • Place of Presentation: 愛媛
  • Year and Date: 2009-03-19
• [Presentation] Rocket-triggered lightning observed by VHF broadband digital interferometers, (2009)
  • Author(s): S.Yoshida, C.J.Biagi, V.A.Rakov, M.A.Uman, D.M.Jordan, J.D.Hill, T.Morimoto, T.Ushio, Z.-I.Kawasaki
  • Organizer: 2009 AGU Fall Meeting
  • Place of Presentation: San Francisco, U.S.A.
• [Presentation] The bi-directional leader observation in positive cloud-to-ground lightning flashes during summer thunderstorm season (2009)
  • Author(s): Y.Nakamura, M.Akita, T.Morimoto, T.Ushio, Z.Kawasaki, M.Shimizu, M.Miki
  • Organizer: 2009 AGU Fall Meeting
  • Place of Presentation: San Francisco U.S.A.
• [Presentation] Observations of bipolar lightning flashes using the VHF broadband digital interferometer (2009)
  • Author(s): Akita, M., S.Yoshida, T.Morimoto, T.Ushio, Z-I.Kawasaki
  • Organizer: 2009 International Symposium on Electromagnetic Compatibility, 24S2-2(785-788)
  • Place of Presentation: Kyoto Japan
• [Presentation] Rainfall observation with high resolution using Ku-band broad band radar (2009)
  • Author(s): E.Yoshikawa, T.Ushio, T.Morimoto, Z.Kawasaki, T.Mega, K.Imai, T.Nishida, T.Saito, N.Sakazume
  • Organizer: IEEE Radar Conference
  • Place of Presentation: Pasadena CA USA
• [Presentation] 気象用Ku帯広帯域レーダの開発と高分解能観測結果 (2008)
  • Author(s): 吉川 栄一
  • Organizer: 日本気象学会2008年度秋季大会
  • Place of Presentation: 宮城
  • Year and Date: 2008-11-19
• [Presentation] 気象庁数値予報モデルを用いた雷嵐予報の実現に向けて (2008)
  • Author(s): 安藤, 中村, 林, 森本, 牛尾, 河崎
  • Organizer: 平成20年電気関係学会関西支部連合大会
  • Place of Presentation: 京都
  • Year and Date: 2008-11-08
• [Presentation] 気象庁数値予報モデルを用いた雷嵐予報の実現に向けて (2008)
  • Author(s): 安藤 正貴
  • Organizer: 平成20年電気学会関西支部連合大会
  • Place of Presentation: 京都
  • Year and Date: 2008-11-08
• [Presentation] 雷放電進展に伴うインパルス性電磁波到来方向推定のための信号処理手法の検討 (2008)
  • Author(s): 平井 健司
  • Organizer: 平成20年電気学会関西支部連合大会
  • Place of Presentation: 京都
  • Year and Date: 2008-11-08
• [Presentation] ファーストアンテナを用いた広帯域干渉法による落雷位置標定システムの開発 (2008)
  • Author(s): 高柳 裕次
  • Organizer: 平成20年電気学会関西支部連合大会
  • Place of Presentation: 京都
  • Year and Date: 2008-11-08
• [Presentation] 雷嵐監視用高帯域干渉計の簡易較正と精度評価 (2008)
  • Author(s): 中村 佳敬
  • Organizer: 電子情報通信学会環境電磁工学研究会
  • Place of Presentation: 大阪
  • Year and Date: 2008-09-26
• [Presentation] 気象用高分解能ボリュームスキャニングレーダの開発と初期観測結果 (2008)
  • Author(s): 吉川 栄一
  • Organizer: 電子情報通信学会環境電磁工学研究会
  • Place of Presentation: 大阪
  • Year and Date: 2008-09-26
• [Presentation] Comprehensive thunderstorm observations by the broadband radar network (2008)
  • Author(s): T. Morimoto, T. Ushio, Z. Kawasaki
  • Organizer: The XXIXth URSI General Assembly.
  • Place of Presentation: Illinois, U.S.A(Invited)
  • Year and Date: 2008-08-11
• [Presentation] Comprehensive thunderstorm observations by the broadband radar network (2008)
  • Author(s): T. Morimoto
  • Organizer: The XXIXth URSI General Assembly
  • Place of Presentation: U. S. A.
  • Year and Date: 2008-08-11
• [Presentation] 気象用Ku帯広帯域レーダによる梅雨時期における高分解能観測結果 (2008)
  • Author(s): 吉川 栄一
  • Organizer: 日本大気電気学会第79回研究発表会
  • Place of Presentation: 沖縄
  • Year and Date: 2008-07-10
• [Presentation] Development and Observation of the Ku-band Broad-band Radar for Meteorological Application (2008)
  • Author(s): E. Yoshikawa
  • Organizer: IEEE International Geoscience & Remote Sensing Symposium
  • Place of Presentation: U.S.A.
  • Year and Date: 2008-07-06
• [Presentation] Lower troposphere radar and VHF broadband digital interferometer observations of thunderclouds in Gifu Prefecture (2008)
  • Author(s): 中村 佳敬
  • Organizer: 日本地球惑星科学連合2008年大会
  • Place of Presentation: 千葉
  • Year and Date: 2008-05-29
• [Presentation] Broad band radar for high resolution observation of precipitation (2008)
  • Author(s): T. Uhio, E. Yoshikawa, T. Mega, T. Morimoto, Z. Kawasaki
  • Organizer: IEEE Radar Conference
  • Place of Presentation: Rome, Italy
  • Year and Date: 2008-05-27
• [Presentation] Broad band radar for high resolution observation of precipitation (2008)
  • Author(s): T. Ushio
  • Organizer: IEEE Radar Conference
  • Place of Presentation: Italy
  • Year and Date: 2008-05-27
• [Presentation] 気象用Ku帯広帯域レーダの2号機の開発及び初期観測結果 (2008)
  • Author(s): 吉川 栄一
  • Organizer: 日本気象学会2008年度春季大会
  • Place of Presentation: 神奈川
  • Year and Date: 2008-05-19
• [Presentation] ENSO and convective activities in Southeast Asia and western Pacific (2008)
  • Author(s): T. Morimoto
  • Organizer: 3rd TRMM Int'l Science Conference
  • Place of Presentation: U.S.A.
  • Year and Date: 2008-02-08
• [Presentation] Development of high resolution and fast scanning radar (2008)
  • Author(s): K. Imai
  • Organizer: 88th American Meteorological Society Annual Meeting
  • Place of Presentation: U.S.A.
  • Year and Date: 2008-01-21
• [Presentation] Evidence of negative leaders which precede fast rise ICC pulses of upward lightning (2008)
  • Author(s): S.Yoshida, M.Akita, T.Morimoto, T.Ushio, Z.-I.Kawasaki, D.Wang, N.Takagi
  • Organizer: (Abstract) AGU 2008 Fall Meeting
  • Place of Presentation: San Francisco, U.S.A.
• [Presentation] VHF Broadband Digital Interferometer for Real-time Operation (2008)
  • Author(s): Z.-I.Kawasaki, T.Morimoto, M. Akita,Y.Nakamura, T.Ushio
  • Organizer: (Invited) AGU fall meeting 2008
  • Place of Presentation: San Francisco
• [Presentation] Development and observation of the Ku-band broad band radar for meteorological application (2008)
  • Author(s): Yoshikawa, E., T.Mega, T.Morimoto, T.Ushio, Z-I.Kawasaki
  • Organizer: IEEE International Geoscience and Remote Sensing Symposium (IGARSS) 2008, FR4.203.4
  • Place of Presentation: Boston USA
• [Presentation] Comprehensive Study on K-Events by Means of VHF Broadband Interferometer Observations (2008)
  • Author(s): Akita M, T.Ushio, T.Morimoto, Z.I.Kawasaki
  • Organizer: 29th International Conference on Lightning Protection (ICLP) 2008
  • Place of Presentation: Uppsala Sweden
• [Presentation] Broad band radar for high resolution observation of precipitation (2008)
  • Author(s): Tomoo Ushio, Eiichi Yoshikawa, Tomoaki Mega, Takeshi Morimoto, Zen-Ichiro Kawasaki
  • Organizer: IEEE Radar Conference
  • Place of Presentation: Rome Italy
• [Presentation] ENSO and convective activities in Southeast Asia and western Pasific (2008)
  • Author(s): S.Yoshida, T.Morimoto, T.Ushio, Z.Kawasaki
  • Organizer: The 3rd TRMM International Science Conference
  • Place of Presentation: Las Vegas, USA
• [Presentation] Development of hight resolution and fast scanning radar (2008)
  • Author(s): K.Imai, T.Ushio, Z.-I.Kawasaki
  • Organizer: 88th American Meteorological Society Annual Meeting
  • Place of Presentation: New Orleans, USA
• [Presentation] 気象災害センシング技術 -広帯域レーダシステムの開発- (2007)
  • Author(s): 牛尾 知雄
  • Organizer: 平成19年電気関係学会関西支部連合大会シンポジウム
  • Place of Presentation: 兵庫
  • Year and Date: 2007-11-17
• [Presentation] Broad band radar for high resolution observation of precipitation (2007)
  • Author(s): T. Ushio
  • Organizer: International Symposium on X-band Weather Radar Network
  • Place of Presentation: 茨城
  • Year and Date: 2007-11-05
• [Presentation] Three-dimensional VHF observations using advanced VHF broadband digital interferometer (2007)
  • Author(s): M. Akita
  • Organizer: 13th Int'l Conference on Atmospheric Electricity
  • Place of Presentation: China
  • Year and Date: 2007-08-17
• [Presentation] Lower atmospheric radar observations of thunderclouds in summer (2007)
  • Author(s): Y. Nakamura
  • Organizer: 13th Int'l Conference on Atmospheric Electricity
  • Place of Presentation: China
  • Year and Date: 2007-08-16
• [Presentation] Global impact of ENSO events by TRMM observations (2007)
  • Author(s): S. Yoshida
  • Organizer: 13th Int'l Conference on Atmospheric Electricity
  • Place of Presentation: China
  • Year and Date: 2007-08-16
• [Presentation] A high resolution and precision broad band radar (2007)
  • Author(s): T. Ushio
  • Organizer: 33rd Conference on Radar Meteorology
  • Place of Presentation: Australia
  • Year and Date: 2007-08-07
• [Presentation] 気象用高分解能レーダ(広帯域レーダ)システム開発 (2007)
  • Author(s): 牛尾 知雄
  • Organizer: 日本気象学会2007年度春季大会
  • Place of Presentation: 東京
  • Year and Date: 2007-05-15
• [Presentation] Three-dimensional VHF Observations of positive cloud-to-ground flashes in summer thunderstorm (2007)
  • Author(s): Nakamura, Y., T.Morimoto, T.Ushio, Z-I.Kawasaki, M.Shimizu
  • Organizer: 2009 International Symposium on Electromagnetic Compatibility, 24S2-1(781-784)
  • Place of Presentation: Kyoto Japan
• [Presentation] Effect of Line Configuration on Lightning Flashover Characteristics of Electric Power Line with Insulated Covered Conductor (2007)
  • Author(s): Kenji Yamamoto, Yoshihiko Kunieda, Takaaki Hanai, Zen-ichiro Kawasaki, Tomoo Ushio
  • Organizer: Proceedings of the 15 International Symposium on High Voltage Engineering(1-6)
  • Place of Presentation: Ljubljana, Slovenija
• [Presentation] Spaceborne VHF broadband digital interferometer for thunderstorm observations (2007)
  • Author(s): T.Morimoto, Z-I.KAWASAKI, T.Ushio
  • Organizer: 13th International Conference on Atmospheric Electricity(827-830)
  • Place of Presentation: Beijing, CHINA
• [Presentation] Three-dimensional VHF Observations Using Advanced VHF Broadband Digital Interferometer (2007)
  • Author(s): M.Akita, K.Hirai, M.Satoh, Y.Nakamura, T.Morimoto, T.Ushio, Z-I.Kawasaki
  • Organizer: 13th International Conference on Atmospheric Electricity(815-818)
  • Place of Presentation: Beijing, CHINA
• [Presentation] Global Impact of ENSO events by TRMM observations (2007)
  • Author(s): S.Yoshida, N.Nakazato, S.Oita, T.Morimoto, T.Ushio, Z-I.Kawasaki
  • Organizer: 13th International Conference on Atmospheric Electricity(665-668)
  • Place of Presentation: Beijing, CHINA
• [Presentation] Lower atmospheric radar observations of thunderclouds in summer (2007)
  • Author(s): Y.Nakamura, M.Akita, T.Morimoto, T.Ushio, Z-I.Kawasaki
  • Organizer: 13th International Coference on Atmospheric Electricity(585-588)
  • Place of Presentation: Beijing, CHINA
• [Presentation] Radiation Bursts Synchronizing with Lightning Discharges in Hokuriku, Japan (2007)
  • Author(s): S.Yoshida, M.Satoh, T.Morimoto, T.Ushio, Z-I.Kawasaki, T.Torii, D.Wang, N.Takagi, T.Watanabe
  • Organizer: 13th International Conference on Atmospheric Electricity(349-352)
  • Place of Presentation: Beijing, CHINA
• [Presentation] A High Resolution and Precision Broad Band Radar (2007)
  • Author(s): Ushio, T., T. Mega, T. Morimoto, Z-I.Kawasaki, K. Okamoto
  • Organizer: 33rd Conference on Radar Meteorology(6-10)
  • Place of Presentation: Cairns Australia