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・Publications in 2015

►International Conferences
  1. PROBABILISTIC ATTENUATION CORRECTION IN MULTIPLE RADAR NETWORK,S. Shimamura, V. Chandrasekar, T. Ushio, E. Yoshikawa,1st URSI Atlantic Radio Science Conference, Gran,Canaria,Spain,May.18-22,2015

  2. SATO, M., M. MIHARA, T. USHIO, T. MORIMOTO, H. KIKUCHI, T. ADACHI, M.SUZUKI, A. YAMAZAKI, and Y. TAKAHASHI, Relation Between Sprite Distribution and Source Locations of VHF Pulses Derived From JEM- GLIMS Measurements, EGU General Assembly 2015, EGU2015-8335, (INVITED), Vienna, April 14 2015.

  3. Sato, M., T. Ushio, T. Morimoto, M. Mihara, T. Sato, C. Shimizu, T. Adachi, H. Kikuchi, M. Suzuki, A. Yamazaki, and Y. Takahashi, 2.5-years Observations of Lightning and TLEs by JEM- GLIMS from the ISS, AOGS 2015, Singapore, AS08-D1-PM1-329-005, August 2015.

  4. HIROSE, H., Atsushi HIGUCHI, Tomoaki MEGA, Tomoo USHIO, Munehisa K. YAMAMOT, Shoichi SHIGE, Atsushi HAMADA, Improvement of GSMaP with Multi-Channel Geostationary Meteorological Satellite Observation for Orographic Rain, AOGS 2015, Singapore, AS37-D3-AM1-328-004, August 2015.

・Publications in 2014

►Journals
  1. Koichi Maruo, Shigeharu Shimamura, Eiichi Yoshikawa, Satoru Yoshida, Tomoo Ushio, Humihiko Mizutani, Shinsuke Satou, Minimum mean square error method on observation result of Phased Array Weather Radar, IEEJ, 4,2014.

  2. Y. Hirano, K. Maruo, S. Shimamura, S. Yoshida, T. Ushio, H. Mizutani, S. Satoh, The evaluation on the observation accuracy of Phased Array weather Radar, IEEJ, 4,2014.

  3. S. Shimamura, E. Yoshikawa, S. Yoshida, T. Ushio, Preliminary study on low-level turbulence advisory system with Ku-band broadband radar at Shonai Airport in Yamagata, IEEJ, 4,2014.

  4. Satoru Yoshida, Ting Wu, Tomoo Ushio, Y. Takayanagi, Lightning observation in 3D using a multi LF sensor network and comparison with radar reflectivity, IEEJ, 4,2014.

  5. Yoshikawa, E., V. Chandrasekar, T. Ushio, Raindrop Size Distribution (DSD) Retrieval for X-Band Dual-Polarization Radar. J. Atmos. Oceanic Technol., Vol. 31, pp. 387?403. doi: http://dx.doi.org/10.1175/JTECH-D-12-00248.1, 2014.2

  6. Ting Wu, Satoru Yoshida, Tomoo Ushio, Zen Kawasaki, Yuji Takayanagi,Daohong Wang, Large bipolar lightning discharge events in winter thunderstorms in Japan, Journal of Geophysical Research, 1, 2014.

  7. T. Kawachi, S. Yoshida, Wu Ting, T. Ushio, K. Kusunoni, Altitude of Occurring Preliminary Breakdown Followed by Lightning Discharges and Charge Structure in a Thunderstorm, Journal of Atmospheric Electricity, 1, 2014.

  8. Lotfy S. Elbaghdady, Ahmed Allam, T. Ushio, Zen I. Kawasaki, Mohamed E. Ragab, Correlated One Site Three Dimensions VHF Broadband Digital Interferometer algorithm and Phased Array Radar (PAR) Observations, Journal of Atmospheric Electricity, 1, 2014.

  9. Yoshida, S., T. Wu, T. Ushio, K. Kusunoki, and Y. Nakamura, Initialresults of LF sensor network for lightning observation andcharacteristics of lightning emission in LF band, J. Geophys. Res.Atmos., 119, 21,034–12,051, doi:10.1002/2014JD022065, 2014.11

  10. Ushio, T., T. Wu, S. Yoshida, Review of recent progress in lightningand thunderstorm detection techniques in Asia, Atmos. Res., 154, 1, pp.89-102, doi:10.1016/j.atmosres.2014.10.001, 2015.3 (Invited Review Paper)
►International Conferences
  1. Ushio, T., S. Shimamura, H. Kikuchi, T. Mega, T. Wu, G. Kim, F. Mizutani, M. Wada. S. Satoh, T. Iguchi, E. Yoshikawa, Cross sensor comparison of the phased array radar at X band, 9259-32, SPIE Asia-Pacific Remote Sensing, Beijing China, Oct. 13-16, 2014

  2. Yoshikawa, E., T. Ushio, T. Matsuda, A widely distributed MIMO radar with compressed sensing, 9259-26, SPIE Asia-Pacific Remote Sensing, Beijing China, Oct. 13-16, 2014

  3. Ting, W., T. Ushio, S. Yoshida, LF Lightning Location System (BOLT) in Osaka Area and Its Applications, 23, 32nd International Conference on Lightning Protection, Shanghai China, Oct. 11-18, 2014

  4. Nakamura, Y., T. Wu, T. Ushio, L. Elbaghdady, Z-I. Kawasaki, Development and Initial Observations of a Longperiod VHF Broadband Digital Interferometer, 427, 32nd International Conference on Lightning Protection, Shanghai China, Oct. 11-18, 2014

  5. Hirano, Y., T. Mega, S. Shimamura, T. Wu, H. Kikuchi, T. Ushio, E. Yoshikawa, V. Chandrasekar, Ground Validation of Dual Precipitation Radar (DPR) on GPM by rapid scan Phased Array weather Radar, H13B-1080, AGU Fall Meeting 2015 SanFrancisco USA, Dec. 15-19, 2014

  6. Ushio, T., M. Sato, T. Morimoto, M. Suzuki, A. Yamazaki, Y. Hobara, M. Kikuchi, U. Inan, I. Linscott, H. Kikuchi, Y. Takahashi, T. Adachi, Lightning and Sprite Detection from Internationa Space Station, AE13B-3373, AGU Fall Meeting 2015 SanFrancisco USA, Dec. 15-19, 2014

  7. Sato, M., T. Adachi, M. Mihara, T. Ushio, T. Morimoto, H. Kikuchi, M. Suzuki, A. Yamazaki, Y. Takahashi, Spatiotemporal Characteristics of Sprites and Sprite-related VHF Signals Measured by JEM-GLIMS, AE31B-3412, AGU Fall Meeting 2015 SanFrancisco USA, Dec. 15-19, 2014

  8. Saavedra, O., M. Ryo, K. Takido, T. Ushio, Are Recent Satellite-Based Precipitation Products Useful for Flood Identification at Humid Basins?, H12C-06, AGU Fall Meeting 2015 SanFrancisco USA, Dec. 15-19, 2014

  9. Adachi, T., M. Sato, M. Mihara, T. Ushio, A. Yamazaki, M. Suzuki, M. Kikuchi, Y. Takahashi, U. Inan, I. Linscott, Y. Hobara, S. Hayashi, K. Kusunoki, Imaging and Spectrophotometric Measurement of Lightning by JEM-GLIMS, AE13B-3371, AGU Fall Meeting 2015 SanFrancisco USA, Dec. 15-19, 2014

  10. Ushio, T., Overview of Phased Array Radar System –Concept, Design,and Future-, 2-2, The 4th International Symposium on Data Assimilation2015, Riken Kobe, Feb. 23-26 2015 (Invited)

  11. T. Mega, T. Ushio, T. Kubota, M. Kachi, K. Aonashi, S. Shige, GAUGE ADJUSTED GLOBAL SATELLITE MAPPING OF PRECIPITATION(GSMAP GAUGE), 31st URSI General Assembly and Scientific Symposium, Beijing, China, Aug.16-21, 2014.

  12. T. Wu, J. Shang, T. Ushio, F. Mizutani, SIMULATION OF DIGITAL BEAM FORMING METHOD ON 2-D PHASED ARRAY WEATHER RADAR, 31st URSI General Assembly and Scientific Symposium, Beijing, China, Aug.16-21, 2014.

  13. T. Ushio, M. Sato, T. Morimoto, M. Suzuki, H. Kikuchi, Y. Hobara, T. Adachi, A. Yamazaki, GLOBAL LIGHTNING AND SPRITE MEASUREMENTS FROM INTERNATIONAL SPACE STATION(invited), 31st URSI General Assembly and Scientific Symposium, Beijing, China, Aug.16-21, 2014.

  14. T. Ushio, S. Shimamura, H. Kikuchi, T. Wu, T. Mega, F. Mizutani, M. Wada, S. Satoh, T. Iguchi, E. Yoshikawa, DEVELOPMENT AND OBSERVATION OF THE PHASED ARRAY RADAR AT X BAND(invited), 31st URSI General Assembly and Scientific Symposium, Beijing, China, Aug.16-21, 2014.

  15. S. Yoshida, T. Wu, T. Ushio, K. Kusunoki, CHARACTERISTICS OF RADIATION OF LIGHTNING DISCHARGE IN LF BAND(invited), 31st URSI General Assembly and Scientific Symposium, Beijing, China, Aug.16-21, 2014.

  16. T. Wu, S. Yoshida, T. Ushio, OBSERVATIONS OF NARROW BIPOLAR EVENTS INITIATING REGULAR LIGHTNING FLASHES(invited), 31st URSI General Assembly and Scientific Symposium, Beijing, China, Aug.16-21, 2014.

  17. Hobara, Y., K. Kikunyama, M. Sato, T. Ushio, T. Morimoto, A. Yamazaki, M. Suzuki, M. Kikuchi, Y. Takahashi, U. Inan, VLF Subionospheric Disturbances and Causative Lightning Properties by using Ground Observations and ISS GLIMS Mission, AS28-D1-AM2-ED002, AOGS2014, Sapporo, Jul. 28-Aug. 1, 2014 (Invited)

  18. Kikuchi, H., T. Morimoto, T. Ushio, M. Sato, A. Yamazaki, M. Suzuki, Lightning Observations Using VHF Interferometer Installed on the International Space Station, AS28-D1-AM2-ED003, AOGS2014, Sapporo, Jul. 28-Aug. 1, 2014

  19. Adachi, T., M. Sato, T. Ushio, T. Morimoto, A. Yamazaki, U. Inan, I. Linscott, Y. Hobara, H. Frey, S. Mende, A. Chen, H. Su, R. Hsu, Lightning Characteristics Derived from Satellite Spectrophtometric Observation, AS28-D1-AM2-ED004, AOGS2014, Sapporo, Jul. 28-Aug. 1, 2014

  20. Mihara, M. M. Sato, T. Adachi, Y. Takahashi, T. Ushio, T. Morimoto, M. Suzuki, A. Yamazaki, The Horizontal Distributions of Sprites Measured by Lightning and Sprite Imager Onboard JEM-GLIMS, AS28-D1-AM2-ED005, AOGS2014, Sapporo, Jul. 28-Aug. 1, 2014 (Invited)

  21. Mega T., T. Ushio, T. Kubota, M. Kachi, K. Aonashi, S. Shige, Gauge Adjusted Global Satellite Mapping of Precipitation (GSMaP_Gauge), As29-D3-PM2-P-031, AOGS2014, Sapporo, Jul. 28-Aug. 1, 2014

  22. Kubota, T., M. Kachi, R. Oki, K. Aonashi, T. Ushio, S. Shige, Y. Takayabu, Global Satellite Mapping of Precipitation (GSMaP) Product in the GPM Era and its Validation, AS29-D2-AM2-EC-010, AOGS2014, Sapporo, Jul. 28-Aug. 1, 2014

  23. Ushio, T., S. Shimamura, H. Kikuchi, T. Wu, S. Mega, Y. Hirano, T. Iguchi, T. Kubota, The Use of Phased Array Radar in GPM, AS29-D2-AM2-EC-014, AOGS2014, Sapporo, Jul. 28-Aug. 1, 2014

  24. Sato, M., T. Adachi, M. Mihara, Y. Takahashi, T. Ushio, T. Morimoto, M. Suzuki, A. Yamazaki, U. Inan, I. Linscott, Spatial and Temporal Characteristics of Sprites Detected by JEM-GLIMS, AS28-D3-PM2-P-008, AOGS2014, Sapporo, Jul. 28-Aug. 1, 2014

  25. Hirose, H., A. Higuchi, T. Ushio, T. Mega, M. Yamamoto, S. Shige, T. Satomura, A. Hamada, A Potential Map of Precipitation Area Using the Geostationary Meteorological Satellites for the Global Satellite Mapping of Precipitation (GSMaP), AS29-D3-PM2-P-042, AOGS2014, Sapporo, Jul. 28-Aug. 1, 2014

  26. Ushio, T., S. Shimamura, H. Kikuchi, T. Wu, F. Mizutani, M. Wada, S. Satoh, T. Iguchi, Development and Observation of the Phased Array Radar at X band, HS17-D4-PM1-EB-001, AOGS2014, Sapporo, Jul. 28-Aug. 1, 2014(Invited)

  27. Ushio, T., T. Mega, T. Kubota, M. Kachi, K. Aonashi, and S. Shige, Gauge-Adjusted Global Satellite Mapping of Precipitation (GSMaP_Gauge), TH3.08.2, IEEE Geoscience and Remote Sensing Symposium (IGARSS) 2014, Quebec City, Canada, Jul. 13-19, 2014(Invited)

  28. Kachi, M., T. Kubota, K. Aonashi, T. Ushio, S. Shige, M. Yamamoto, T. Mega. R. Oki, Recent Improvements in the Global Satellite Mapping of Precipitation (GSMaP), TH3.08.4, IEEE Geoscience and Remote Sensing Symposium (IGARSS) 2014, Quebec City, Canada, Jul. 13-19, 2014(Invited)

  29. Yoshikawa, E., T. Ushio, V. Chandrasekar, Ground Validation of TRMM/PR with Phased Array Weather Radar in Osaka Area, Japan, TH3.08.5, IEEE Geoscience and Remote Sensing Symposium (IGARSS) 2014, Quebec City, Canada, Jul. 13-19, 2014(Invited)

  30. Takeshi Morimoto, Hiroshi Kikuchi, Tomoo Ushio, Zen-Ichiro Kawasaki, Mitsuteru Sato, Atsushi Yamazaki, and Makoto Suzuki, VHF lightning observations by digital interferometry from ISS / JEM-GLIMS, 2014 INTERNATIONAL CONFERENCE ON ATMOSPHERIC ELECTRICITY, Norman, June 16-20, 2014.

  31. Hiroshi Kikuchi, Takeshi Morimoto, Tomoo Ushio, Mitsuteru Sato, Atsushi Yamazaki and Makoto Suzuki, Propagation characteristics of VHF waves recorded on the International Space Station, 2014 INTERNATIONAL CONFERENCE ON ATMOSPHERIC ELECTRICITY, Norman, June 16-20, 2014.

  32. Tomoo Ushio, Mitsuteru Sato, Takeshi Morimoto, Makoto Suzuki, Atsushi Yamazaki, Yasuhide Hobara, Masayuki Kikuchi, Umran Inan, Ivan Linscott, Ryohei Ishida, Yukihiro Takahashi, Yuji Sakamoto, Z-I Kawasaki, Global Lightning and Sprite Measurements from International Space Station, 2014 INTERNATIONAL CONFERENCE ON ATMOSPHERIC ELECTRICITY, Norman, June 16-20, 2014.

  33. Ting Wu, Satoru Yoshida and Tomoo Ushio, Is Narrow Bipolar Event a Type of Isolated Lightning Discharge? 2014 INTERNATIONAL CONFERENCE ON ATMOSPHERIC ELECTRICITY, Norman, June 16-20, 2014.

  34. Tomoo Ushio, Shigeharu Shimamura, Ting Wu, Hiroshi Kikuchi, Eiichi Yoshikawa, Satoru Yoshida, Zen Kawasaki, Fumihiko Mizutani, Masakazu Wada, Shinsuke Satoh, Toshio Iguchi, Development and Observation of the Phase Array Radar at X band, 2014 INTERNATIONAL CONFERENCE ON ATMOSPHERIC ELECTRICITY, Norman, June 16-20, 2014.

  35. Satoru Yoshida, W. Ting, T. Ushio, K. Kusunoki, Relationship between preliminary breakdown and charge structure revealed by Phased array radar, 2014 INTERNATIONAL CONFERENCE ON ATMOSPHERIC ELECTRICITY, Norman, June 16-20, 2014.

  36. Wu, T., S. Yoshida, and T. Ushio, The Most Powerful Lightning Discharges in Winter Thunderstorms in Japan Sea Coast, 14P1-S2, 2014 International Symposium on Electromagnetic Compatibility, Tokyo, May 13-16, 2014.

  37. Kikuchi, H., T. Morimoto, T. Ushio, M. Sato, A. Yamazaki and M. Suzuki, VHF Radio Observations of Lightning Discharges on JEM-GLIMS, 14P1-S4, 2014 International Symposium on Electromagnetic Compatibility, Tokyo, May 13-16, 2014.

  38. Ushio, T., S. Shimamura, H. Kikuchi, T. Mega, T. Wu, G. Kim, F.Mizutani, M. Wada. S. Satoh, T. Iguchi, E. Yoshikawa, Cross sensorcomparison of the phased array radar at X band, 9259-32, SPIE Asia-Pacific Remote Sensing, Beijing China, Oct. 13-16, 2014

  39. Yoshikawa, E., T. Ushio, T. Matsuda, A widely distributed MIMO radar with compressed sensing, 9259-26, SPIE Asia-Pacific Remote Sensing, Beijing China, Oct. 13-16, 2014

  40. Ting, W., T. Ushio, S. Yoshida, LF Lightning Location System (BOLT)in Osaka Area and Its Applications, 23, 32nd International Conference on Lightning Protection, Shanghai China, Oct. 11-18, 2014

  41. Nakamura, Y., T. Wu, T. Ushio, L. Elbaghdady, Z-I. Kawasaki,Development and Initial Observations of a Longperiod VHF Broadband Digital Interferometer, 427, 32nd International Conference on LightningProtection, Shanghai China, Oct. 11-18, 2014

  42. Hirano, Y., T. Mega, S. Shimamura, T. Wu, H. Kikuchi, T. Ushio, E.Yoshikawa, V. Chandrasekar, Ground Validation of Dual Precipitation Radar (DPR) on GPM by rapid scan Phased Array weather Radar, H13B-1080, AGU Fall Meeting 2015 SanFrancisco USA, Dec. 15-19, 2014

  43. Ushio, T., M. Sato, T. Morimoto, M. Suzuki, A. Yamazaki, Y. Hobara, M. Kikuchi, U. Inan, I. Linscott, H. Kikuchi, Y. Takahashi, T. Adachi, Lightning and Sprite Detection from Internationa Space Station, AE13B-3373, AGU Fall Meeting 2015 SanFrancisco USA, Dec. 15-19, 2014

  44. Sato, M., T. Adachi, M. Mihara, T. Ushio, T. Morimoto, H. Kikuchi, M. Suzuki, A. Yamazaki, Y. Takahashi, Spatiotemporal Characteristics of Sprites and Sprite-related VHF Signals Measured by JEM-GLIMS, AE31B-3412, AGU Fall Meeting 2015 SanFrancisco USA, Dec. 15-19, 2014

  45. Saavedra, O., M. Ryo, K. Takido, T. Ushio, Are Recent Satellite-Based Precipitation Products Useful for Flood Identification at Humid Basins?, H12C-06, AGU Fall Meeting 2015 SanFrancisco USA, Dec. 15-19, 2014

  46. Adachi, T., M. Sato, M. Mihara, T. Ushio, A. Yamazaki, M. Suzuki, M. Kikuchi, Y. Takahashi, U. Inan, I. Linscott, Y. Hobara, S. Hayashi, K. Kusunoki, Imaging and Spectrophotometric Measurement of Lightning by JEM-GLIMS, AE13B-3371, AGU Fall Meeting 2015 SanFrancisco USA, Dec. 15-19, 2014

  47. Ushio, T., Overview of Phased Array Radar System –Concept, Design, and Future-, 2-2, The 4th International Symposium on Data Assimilation 2015, Riken Kobe, Feb. 23-26 2015 (Invited)
►Invited Lecture
  1. Hobara, Y., K. Kikunyama, M. Sato, T. Ushio, T. Morimoto, A. Yamazaki, M. Suzuki, M. Kikuchi, Y. Takahashi, U. Inan, VLF Subionospheric Disturbances and Causative Lightning Properties by using Ground Observations and ISS GLIMS Mission, AS28-D1-AM2-ED002, AOGS2014, Sapporo, Jul. 28-Aug. 1, 2014 (Invited)

  2. Mihara, M. M. Sato, T. Adachi, Y. Takahashi, T. Ushio, T. Morimoto, M. Suzuki, A. Yamazaki, The Horizontal Distributions of Sprites Measured by Lightning and Sprite Imager Onboard JEM-GLIMS, AS28-D1-AM2-ED005, AOGS2014, Sapporo, Jul. 28-Aug. 1, 2014 (Invited)

  3. Ushio, T., S. Shimamura, H. Kikuchi, T. Wu, F. Mizutani, M. Wada, S. Satoh, T. Iguchi, Development and Observation of the Phased Array Radar at X band, HS17-D4-PM1-EB-001, AOGS2014, Sapporo, Jul. 28-Aug. 1, 2014(Invited)

  4. Ushio, T., T. Mega, T. Kubota, M. Kachi, K. Aonashi, and S. Shige, Gauge-Adjusted Global Satellite Mapping of Precipitation (GSMaP_Gauge), TH3.08.2, IEEE Geoscience and Remote Sensing Symposium (IGARSS) 2014, Quebec City, Canada, Jul. 13-19, 2014(Invited)

  5. Kachi, M., T. Kubota, K. Aonashi, T. Ushio, S. Shige, M. Yamamoto, T. Mega. R. Oki, Recent Improvements in the Global Satellite Mapping of Precipitation (GSMaP), TH3.08.4, IEEE Geoscience and Remote Sensing Symposium (IGARSS) 2014, Quebec City, Canada, Jul. 13-19, 2014(Invited)

  6. Yoshikawa, E., T. Ushio, V. Chandrasekar, Ground Validation of TRMM/PR with Phased Array Weather Radar in Osaka Area, Japan, TH3.08.5, IEEE Geoscience and Remote Sensing Symposium (IGARSS) 2014, Quebec City, Canada, Jul. 13-19, 2014(Invited)

・Publications in 2013

►Journals
  1. Taniguchi, A., S. Shige, M. Yamamoto, T. Mega, S. Kida, T. Kubota, M. Kachi, T. Ushio, K. Aonashi. Improvement of high-resolution satellite rainfall product for Typhoon Morakot (2009) over Taiwan, J. Hydrometeor., DOI: 10.1175/JHM-D-13-047.1, 2013

  2. H. Selmy, H. M. H. Shalaby, and Z.-I.Kawasaki, Proposal and Performance Evaluation of a Hybrid BPSK-Modified MPPM Technique for Optical Fiber Communications Systems, Jounal of Lightwave Tcchnology, 11, 2013.

  3. Ting Wu, Yuji Takayanagi, Tsuyoshi Funaki, Satoru Yoshida, Tomoo Ushio, Zen-Ichiro Kawasaki, Takeshi Morimoto, Yoshitaka Nakamura, Isolated large bipolar pulse (ILBP) produced by lightning discharge in winter thunderstorm, IEEJ, 9, 2013.

  4. Ting Wu, Yuji Takayanagi, Tsuyoshi Funaki, Satoru Yoshida, Tomoo Ushio, Zen-Ichiro Kawasaki, Takeshi Morimoto, Masahito Shimizu, Preliminary breakdown pulses of cloud-to-ground lightning in winter thunderstorms in Japan, the Journal of Atmospheric and Solar-Terrestrial Physics, 6, 2013

  5. E. Yoshikawa, T. Ushio, Z. Kawasaki, S. Yoshida, T. Morimoto, F. Mizutani, M. Wada, MMSE Beam Forming on Fast-Scanning Phased Array Weather Radar, IEEE Transactions on Geoscience and remote sensing, IEEE Transactions on Geoscience and remote sensing, 4, 2013.

  6. Y. Takayanagi, M. Akita, Y. Nakamura, S. Yoshida, T. Morimoto, T. Ushio, Zen Kawasaki, D. Wang, N. Takagi, H. Sakurano, Y. Kubouchi, Upward lightning observed by LF broadband interferometer, IEEJ, 3, 2013

  7. Wu, T., Y. Takayanagi, S. Yoshida, T. Funaki, T. Ushio, and Z. Kawasaki (2013), Spatial relationship between lightning narrow bipolar events and parent thunderstorms as revealed by phased array radar, Geophys. Res. Lett., 40, doi:10.1002/grl.50112.

  8. Zen Kawasaki, Review of the Location of VHF Pulses Associated with Lightning Discharge, Aerospace Lab Journal, 5, 2013.
►International Conferences
  1. Adachi, T., M. Sato, Y. Takahashi, T. Ushio, A. Yamazaki, M. Suzuki, K. Masayuki, U. Inan, I. Linscott, and Y. Hobara, JEM-GLIMS Nadir Observation: Detection Method of Lightning and TLEs, AGU Fall Meeting, San Francisco, December, 2013.

  2. Ushio, T., K. Aonashi, T. Kubota, S. Shige, M. Kachi, R. Oki, K. Okamoto, S. Yoshida, and Z-I. Kawasaki, Global Satellite Mapping of Precipitation (GSMaP) project, 69, Seventeenth International Water Technology Conference, Istanbul Turkey, Nov. 5-7, 2013

  3. Ushio, T., S. Shimamura, T. Wu, H. Kikuchi, S. Yoshida, Z-I. Kawasaki, F. Mizutani, M. Wada, S. Satoh, and T. Iguchi, Development and Observation of the Phased Array Radar at X band, AE13B-0346, AGU Fall Meeting, San Francisco USA, Dec. 8-13, 2013

  4. Yoshida, S., T. Wu, and T. Ushio, Preliminary breakdown pulses located by Broadband Observation network for Lightning and Thunderstorm, AE13B-0350, AGU Fall Meeting, San Francisco USA, Dec. 8-13, 2013

  5. Tomoaki Mega; Tomoo Ushio; Satoru Yoshida; Zen Kawasaki; Takuji Kubota; Misako Kachi; Kazumasa Aonashi; Shoichi Shige, GAUGE ADJUSTED GLOBAL SATELLITE MAPPING OF PRECIPITATION (GSMAP_GAUGE), H32B-02, AGU Fall Meeting, San Francisco USA, Dec. 8-13, 2013

  6. Sato, M., Y. Takahashi, T. Adachi, N. Kobayashi, M. Mihara, T. Ushio, T. Morimoto, M. Suzuki, A. Yamazaki, U. Inan, and I. Linscott, Photometric Characteristics of Sprites and Elves Derived from JEM-GLIMSNadir Observations, AGU Fall Meeting, San Francisco, December, 2013.

  7. T. Ushio, T. Tajima, T. Kubota, and M. Kachi, Gauge Adjusted Global Satellite Mapping of Precipitation (GSMaP_Gauge), 29th International Symposium on Space Technology and Science (ISTS), 2013-n-48, Nagoya Japan, 2-9 June, 2013.6

  8. T. Ushio, T. Kubota and M. Kachi, Global Satellite Mapping of Precipitation using Moving Vector and Kalman Filter (GSMaP_MVK), Asia Oceania Geoscience Society Annual Meeting, AS15-D3-PM2-P10-008, Brisbane Australia, 24-28 June, 2013.6

  9. Mitsuteru Sato, Tomoo Ushio, Toru Adachi, Takeshi Morimoto, Makoto Suzuki, Atsushi Yamazaki, Masayuki Kikuchi, Yukihiro Takahashi, Umran Inan, Ivan Linscott, Yasuhide Hobara, JEM-GLIMS Observation of Lightning and TLEs from ISS, Davos Atmosphere and Cryosphere Assembly DACA-13, 958, Davos Switzerland, 8-12 July, 2013

  10. M. Wada, H. Goto, F. Mizutani, T. Ushio, S. Shimamura, S. Yoshida, S. Kawamura, H. Hanado, S. Sato, and T. Iguchi, Development of Dual Polarization Phased Array Radar, 4B.1, 36th Conference and Radar Meteorology, Breckenridge CO USA, Sep. 16-20, 2013

  11. T. Ushio, S. Shimamura, T. Wu, H. Kikuchi, E. Yoshikawa, S. Yoshida, F. Mizutani, M. Wada, S. Satoh, and T. Iguchi, Observation and initial comparison of the Phased Array Radar at X band, 4B.3, 36th Conference and Radar Meteorology, Breckenridge CO USA, Sep. 16-20, 2013

  12. E.Yoshikawa, N. Matayoshi, T. Ushio and V. Chandrasekar, Improved Velocity Volume Processing (VVP) with Probabilistic Property of Velocity Measurements for a Scanning Radar/Lidar, 126, 36th Conference and Radar Meteorology, Breckenridge CO USA, Sep. 16-20, 2013

  13. E.Yoshikawa, N. Matayoshi, T. Ushio and V. Chandrasekar, Integrated Velocity Retrieval on Radar Network Environment, 127, 36th Conference and Radar Meteorology, Breckenridge CO USA, Sep. 16-20, 2013

  14. S. Yoshida, T. Ushio, S. Yoshida, S. Shimamura, K. Maruo, and N. Takada, The Structure of Convective Systems Observed by Phased Array Radar in the Kinki Region, Japan, 139, 36th Conference and Radar Meteorology, Breckenridge CO USA, Sep. 16-20, 2013

  15. N. Anraku, F. Mizutani, M. Wada, H. Handa, T. Ushio, and S. Satoh, Development of Phased-Array Weather Radar System for 3D Observation of Cumulonimbus Clouds, 146, 36th Conference and Radar Meteorology, Breckenridge CO USA, Sep. 16-20, 2013

  16. S. Satoh, T. Ushio, S. Shimamura, K. Maruo, F. Mizutani, M. Wada, H. Hanado, S. Kawamura, S. Uratsuka, and T. Iguchi, Three-dimensional Fine Structure of Localized Heavy Rainfalls Measured by Phased Array Weather Radar, 157, 36th Conference and Radar Meteorology, Breckenridge CO USA, Sep. 16-20, 2013

  17. S. Shimamura, E. Yoshikawa, S. Yoshida, T. Ushio and K. Imai, A Bayesian approach for precipitation attenuation correction with a Ku-band Broad Band Radar network, 144, 36th Conference and Radar Meteorology, Breckenridge CO USA, Sep. 16-20, 2013
►Award, Patent
  1. Y. Takayanagi, Student Presentation Award, Society of Atmospheric Electricity of Japan

・Publications in 2012

►Journals
  1. Yoshikawa, E., T. Ushio, Z-I. Kawasaki, and V. Chandrasekar, Dual-Directional Radar Observation for Performance Evaluation of the Ku-band Broadband Radar Network, J. Atmos. Ocea. Tech., Vol. 29, No. 12, pp. 1757-1768, 2012.12

  2. Ting Wu, Yuji Takayanagi, Tsuyoshi Funaki, Satoru Yoshida, Tomoo Ushio, Zen-Ichiro Kawasaki, Takeshi Morimoto, Yoshitaka Nakamura, Isolated large bipolar pulse (ILBP) produced by lightning discharge in winter thunderstorm, IEEJ, 9, 2013.

  3. Ting Wu, Yuji Takayanagi, Tsuyoshi Funaki, Satoru Yoshida, Tomoo Ushio, Zen-Ichiro Kawasaki, Takeshi Morimoto, Masahito Shimizu, Preliminary breakdown pulses of cloud-to-ground lightning in winter thunderstorms in Japan, the Journal of Atmospheric and Solar-Terrestrial Physics, 6, 2013

  4. E. Yoshikawa, T. Ushio, Z. Kawasaki, S. Yoshida, T. Morimoto, F. Mizutani, M. Wada, MMSE Beam Forming on Fast-Scanning Phased Array Weather Radar, IEEE Transactions on Geoscience and remote sensing, IEEE Transactions on Geoscience and remote sensing, 4, 2013.

  5. Y. Takayanagi, M. Akita, Y. Nakamura, S. Yoshida, T. Morimoto, T. Ushio, Zen Kawasaki, D. Wang, N. Takagi, H. Sakurano, Y. Kubouchi, Upward lightning observed by LF broadband interferometer, IEEJ, 3, 2013

  6. Wu, T., Y. Takayanagi, S. Yoshida, T. Funaki, T. Ushio, and Z. Kawasaki (2013), Spatial relationship between lightning narrow bipolar events and parent thunderstorms as revealed by phased array radar, Geophys. Res. Lett., 40, doi:10.1002/grl.50112.

  7. Zen Kawasaki, Review of the Location of VHF Pulses Associated with Lightning Discharge, Aerospace Lab Journal, 5, 2013.
►International Conferences
  1. H. Kikuchi, S. Yoshida, T. Morimoto, T. Ushio, Z. kawasaki, VHF observations on lightning discharges the Maido-1 satellite and the International Space Station, AGU, December 2012

  2. Y. Takayanagi, M. Akita, Y. Nakamura, S. Yoshida, T. Morimoto, T. Ushio, and Z. Kawasaki,Leader process in 3D observed by VLF/LF broadband interferometer,the 31th International Conference on Lightning Protection, Austria, September 2012.

  3. Ting Wu; Tsuyoshi Funaki; Satoru Yoshida; Takeshi Morimoto; Tomoo Ushio; Zen Kawasaki, Discharge height of lightning narrow bipolar events and new observation with phased array radar, AGU, December 2012

  4. T.Ushio, E.Yoshikawa, S.Shimamura, Z.Kawasaki, Development and Observation of the Ku-band Broadband Radar(BBR) Network,The 7th European Conference on radar in Meteorology and Hydrology, Toulouse,June 2012.(Poster)
►Award, Patent
  1. T. Wu, Outstanding Student Paper Award, the 2012 AGU fall meeting in San Francisco, USA.

・Publications in 2011

►Journals
  1. T. Ushio, M. Sato, T. Morimoto, M. Suzuki, H. Kikuchi, A. Yamazaki, Y. Takahashi, Y. Hobara, U. Inan, I. Linscott, Y. Sakamoto, R. Ishida, M. Kikuchi, K. Yoshida, Z-I. Kawasaki, The Global Lightning and Sprite Measurement (GLIMS) Mission of the International Space Station - Concept and Overview -, IEEJ, Vol. 131, No. 12, pp. 971-976, 2011.

  2. T. Morimoto, H. Kikuchi, M. Sato, M. Suzuki, A. Yamazaki, and T. Ushio, VHF Lightning Observations on JEM-GLIMS Mission -Gradual Approach to Realize Space-borne VHF Broadband Digital Interferometer-, IEEJ, Vol. 131, No. 12, pp. 977-982, 2011.

  3. M. Kikuchi, M. Sato, A. Yamazaki, M. Suzuki, and T. Ushio, Development of Science Data Handling Unit (SHU) for Global Lightning and Sprite Measurements (GLIMS) onboard Japanese Experiment Module (JEM) of ISS, IEEJ, Vol. 131, No. 12, pp. 989-993, 2011.

  4. M. Sato, Y. Takahashi, M. Kikuchi, M. Suzuki, A. Yamazaki, and T. Ushio, Lightning and Sprite Imager (LSI) onboard JEM-GLIMS, IEEJ, Vol. 131, No. 12, pp. 994-999, 2011.

  5. M. Sato, Y. Takahashi, M. Suzuki A. Yamazaki, and T. Ushio, Six-Channel Spectrophotometer (PH) Onboard JEM-GLIMS, IEEJ, Vol. 131, No. 12, pp. 1000-1005, 2011.

  6. H. Kikuchi, S. Yoshida, T. Morimoto, T. Ushio, Z.-I. Kawasaki, Satellite Observations for Lightning Discharges and Analysis of VHF Electromagnetic Waveforms, 131, 9, IEEJ. Trans. FM., pp. 705-710, 2011.

  7. 高柳, 秋田, 中村, 吉田, 森本, 牛尾, 河ア, 山本, VLF/LF 帯広帯域干渉計の開発と初期観測結果, IEEJ. Trans. FM., 131, 9, pp. 716-722, 2011.

  8. 住田, 吉田, 中村, 秋田, 森本, 牛尾, 河ア, 雷放電に伴うVHF帯電磁波の統計的解析, IEEJ. Trans. FM.,131, 8, pp. 659-664, 2011.

  9. M. Akita, S. Yoshida, Y. Nakamura, T. Morimoto, T. Ushio, Z. Kawasaki, and D. Wang, Effects of Charge Distribution in Thunderstorm on Lightning Propagation Paths in Darwin, Australia, J. Atmos. Sci., 68, 719-726, doi:10.1175/2010JAS3597.1, 2011.
►Review
  1. T. Ushio, T. Morimoto,H. Kikuchi,Y. Takahashi, Z.-I. Kawasaki, Lightning and Sprite Observation from international space station(in Japanese),131,1,IEEJ. Trans. FM.,2011.
►International Conferences
  1. M. Akita, M. Stock, H. Edens, P. Krehbiel, S. Hunyady, T. Morimoto, S. Yoshida, T. Ushio, Z. Kawasaki, Combined VHF Broadband Interferometer and Lightning Mapping Array Observations of Lightning Discharge Processes, (Abstract) AGU 2011 Fall Meeting, California, USA, December 2011. (Poster, Reviewed)

  2. K. Okamoto, S. Shige, M. Kachi, T. Kubota, and T. Ushio, The global precipitation map produced by spaceborne microwave radiometers and it's application overview of the GSMAP (Global Satellite Mapping of Precipitation) project, The XXXth URSI General Assembly, Istanbul, August 2011. (Oral)

  3. T. Ushio, Z. Kawasaki, M. Akita, S. Yoshida, T. Morimoto, Y. Nakamura, A vhf broadband interferometer for lightning observation , The XXXth URSI General Assembly, Istanbul, August 2011. (Oral,invited)

  4. T. Ushio, E. Yoshikawa, N. Wakayama, S. Shimamura, S. Yoshida, T. Morimoto1, Z. Kawasaki1, Development of the broadband radar network with high resolution, The XXXth URSI General Assembly, Istanbul, August 2011. (Oral,invited)

  5. S. Yoshida, M. Akita, T. Morimoto, T. Ushio, Z.-I. Kawasaki, stepped leader characteristics in developing horizontally within thunderclouds and in descending out of thunderclouds, The XXXth URSI General Assembly, Istanbul, August 2011. (Oral,invited)

  6. S. Yoshida, 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, and M. Akita, VHF radiation sources associated with precursors and ICC pulses of rocket-and-wire triggered lightning, the 13th International Conference on Atmospheric Electricity, Rio de Janeiro, Brazil, August 2011. (Poster, Reviewed)

  7. H. Kikuchi, S. Yoshida, T. Morimoto, T. Ushio, and Z.-I. Kawasaki, Propagation characteristics of lightning observed VHF pulses with the Maido-1 satellite, the 13th International Conference on Atmospheric Electricity, Rio de Janeiro, Brazil, August 2011. (Poster, Reviewed)

  8. M. Akita, Y. Takayanagi, Y. Nakamura, S. Yoshida, T. Morimoto, T. Ushio, and Z. Kawasaki, Time Evolution of Charge Distributions and Characteristics of Lightning Leader Progressions using VHF Broadband Digital Interferometer, the 13th International Conference on Atmospheric Electricity, Rio de Janeiro, Brazil, August 2011. (Oral, Reviewed)

  9. Y. Takayanagi, M. Akita, Y. Nakamura, S. Yoshida, T. Morimoto, T. Ushio, Z. Kawasaki, Development and initial observations of VLF/LF broadband digital interferometer, the 13th International Conference on Atmospheric Electricity, Rio de Janeiro, Brazil, August 2011. (Oral, Reviewed)

  10. M. Akita, S. Yoshida, Y. Nakamura, T. Morimoto, T. Ushio, Z. Kawasaki, D. Wang, and N. Takagi, Observations of Bipolar Lightning Discharges Using VHF Broadband Digital Interferometers, the 3rd International Symposium on Winter Lightning, Tokyo, Japan, June 2011. (Oral, Reviewed)

  11. Y. Takayanagi, M. Akita, Y. Nakamura, S. Yoshida, T. Morimoto, T. Ushio, Z.-I. Kawasaki, D. Wang, N. Takagi, Winter Lightning Observations using VLF/LF Broadband Interferometer, the 3rd International Symposium on Winter Lightning, Tokyo, Japan, June 2011. (Oral, Reviewed)

  12. L. A. McMurdie, J. A. Weinman, R. H. Holzworth and Y. Nakamura, Winter-time lightning during cold-air outbreaks over the North Pacific ocean, 91st American Meteorological Society Annual Meeting, U.S.A, January 2011.

  13. Y. Nakamura, R. H. Holzworth, A. R. Jacobson, J. A. Weinman, L. A. McMurdie, H. Meng, R. R. Ferraro, T. Morimoto, T. Ushio and Z. Kawasaki, Global relationships between lightning and ice water path characteristics from WWLLN and AMSUB/MHS, 91st American Meteorological Society Annual Meeting, U.S.A, January 2011.

  14. T. Moromoto,H. Kikuchi,S. Yoshida,T. Ushio and Z. Kawasaki,Toward Space-based VHF Broadband Digital Interferometer for Lightning Observations,XIV International Conference on Atmospheric Electricity, Brazil, Rio de Janeiro, August 08-12,2011.

・Publications in 2010

►Journals
  1. E. Yoshikawa, S. Kida, S. Yoshida, T. Morimoto, T. Ushio, and Z.-I. Kawasaki, Vertical structure of raindrop size distribution in lower atmospheric boundary layer, Geophys. Res. Lett., 37, L20802, doi:10.1029/2010GL045174, 2010,

  2. M. Akita, S. Yoshida, Y. Nakamura, T. Morimoto, T. Ushio, Z-I. Kawasaki, and D. Wang, Lightning Channels of Cloud-to-ground Flashes Neutralizing Multiple Charge Regions inside Winter Thunderclouds, IEEJ Trans. FM., 130, 5, 467-472, 2010.

  3. E. Yoshikawa, T. Ushio, Z. Kawasaki, T. Mega, S. Yoshida, T. Morimoto, K. Imai, and S. Nagayama, Development and initial observation of high-resolution volume-scanning radar for meteorological application, IEEE Transactions on Geoscience and remote sensing, 48, 8, pp.3225-3235, 2010.

  4. S. Yoshida, C. J. Biagi, V. A. Rakov, J. D. Hill, M. V. Stapleton, D. M. Jordan, M. A. Uman, T. Morimoto, T. Ushio, and Z.-I. Kawasaki, Three-dimensional imaging of upward positive leaders in triggered lightning using VHF broadband digital interferometers, Geophys. Res. Lett., 37, L05805, doi:10.1029/2009GL042065, 2010.

  5. 中村, 秋田, 森本, 牛尾, 河崎, 清水, 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, 電気学会論文誌. A, 基礎・材料・共通部門誌, 130, 4, pp.377-386, 2010.

  6. 岡田,金,村田,歩行障害を有する脳卒中患者の改善度推定のための足音検知の試み,日本臨床生理学会雑誌,40,3,pp. 129-135, 2010.

  7. Y. Tian, C. Lidard, R. Adler, T. Kubota, and T. Ushio, Evaluation of GSMaP Precipitation Estimates over Contiguous U.S., Journal of Hydrometeorology, doi:10.1175/2009JHM1190.1, 2010.

  8. H. Kikuchi, T. Morimoto, T. Ushio, and Z. Kawasaki, Wideband Radio Wave Observations of Lightning Discharge by Maido-1 satellite, IEICE TRANSACTIONS on Communications, E93-B, 8, pp.2226-2227, 2010.

  9. M. Akita, Y. Nakamura, S. Yoshida, T. Morimoto, T. Ushio, Z.-I. Kawasaki, and D. Wang, What Occurs in K-process of Cloud Flashes?, J. Geophys. Res., 115, D07106, doi:10.1029/2009JD012016, 2010.
►International Conferences
  1. D. M. Jordan, J. D. Hill, M. A. Uman, S. Yoshida, and Z. Kawasaki, High-Speed Video Observations of a Natural Lightning Stepped Leader, (Abstract) AGU 2010 Fall Meeting, California, USA, December 2010. (Poster, Reviewed)

  2. M. Akita, S. Yoshida, T. Morimoto, T. Ushio, Z. Kawasaki, and D. Wang, Relationships between the Lightning Leader Progression Characteristics and Local Charge Structures in Thunderclouds, (Abstract) AGU 2010 Fall Meeting, California, USA, December 2010. (Poster, Reviewed)

  3. Y. Nakamura, R. H. Holzworth, A. R. Jacobson, J. A. Weinman, L. A. McMurdie, H. Meng, R. R. Ferraro, T. Morimoto, T. Ushio and Z. Kawasaki, Global characteristics between lightning activity and frozen hydrometeor from WWLLN and AMSUB/MHS, (Abstract) AGU 2010 Fall Meeting, California, USA, December 2010. (Poster, Reviewed)

  4. T. Morimoto, H. Kikuchi, T. Ushio, and Z. Kawasaki, Gradual approach to realize lightning monitoring from space by means of VHF observations, (Abstract) AGU 2010 Fall Meeting, California, USA, December 2010. (Poster, Reviewed)

  5. M. Akita, S. Yoshida, T. Morimoto, T. Ushio and Z. Kawasaki, “A Study on the Effects of the Charge Distributions on Lightning Leader Progressions Using the VHF Broadband Digital Interferometer”, IEICE International Conference on Space, Aeronautical and Navigational Electronics, Jeju, Korea, October 2010. (Reviewed)

  6. E. Yoshikawa, S. Yoshida, T. Morimoto, T. Ushio, and Z.-I. Kawasaki, "Initial Observation Results for Precipitation on the Ku-band Broadband Radar Network", IEICE International Conference on Space, Aeronautical and Navigational Electronics, Jeju, Korea, October 2010. (Reviewed)

  7. E. Yoshikawa, S. Yoshida, T. Morimoto, T. Ushio, and Z.-I. Kawasaki, "Network Retrieval Technique for Precipitation Attenuation on Ku-band Broadband Radar Network", IEICE International Conference on Space, Aeronautical and Navigational Electronics, Jeju, Korea, October 2010. (Reviewed)

  8. H. Kikuchi, T. Morimoto, T. Ushio, and Z. Kawasaki, VHF Broadband Observations of Lightning Discharges by Maido-1 satellite, 2010 Asia-Pacific Radio Science Conference (AP-RASC'10), Ishikawa, Japan, September 2010.

  9. M. Akita, T. Morimoto, T. Ushio, Z. Kawasaki, and D. Wang, The Relationship Between the Leader Progressions and the Charge Distributions, 2010 Asia-Pacific Radio Science Conference (AP-RASC'10), Ishikawa, Japan, September 2010.

  10. T. Morimoto, H. Kikuchi, T. Ushio, and Z. Kawasaki, Space-borne VHF lightning observations by Maido-1 and JEM-GLIMS missions, 2010 Asia-Pacific Radio Science Conference (AP-RASC'10), Ishikawa, Japan, September 2010.

  11. M. Akita, T. Morimoto, T. Ushio, and Z. Kawasaki, Estimations for charge distributions in thunderclouds using the VHF broadband digital interferometer, JpGU International Symposium 2010, MIS001-16, Chiba, Japan, May 2010.

  12. H. Kikuchi, T. Morimoto, T. Ushio, Z.-I. Kawasaki, and T. Aoki, Broadband VHF lightning impulses observed by a small satellite "Maido-1, JpGU International Symposium 2010, MIS001-09, Chiba, Japan, May 2010.

  13. T. Morimoto, H. Kikuchi, T. Ushio, and Z.-I. Kawasaki, Wideband VHF Radio Observations for Lightning by Maido-1 satellite, JpGU International Symposium 2010, MSD030-P04, Chiba, Japan, May 2010.

  14. T. Ushio, M. Sato, M. Suzuki, T. Morimoto, A. Yamazaki, Y. Hobara, R. Ishida, Y. Sakamoto, Y. Takahashi, Z.-I. Kawasaki, and K. Yoshida, JpGU International Symposium 2010, MSD030-P04, Chiba, Japan, May 2010.

・Publications in 2009

►Journals
  1. S. Yoshida, T. Morimoto, T. Ushio, and Z.-I. Kawasaki, A fifth power relationship for lightning activity from TRMM satellite observations, J. Geophys. Res., 114, D09104, doi:10.1029/2008JD010370, 2009.

  2. Y. Nakamura, E. Yoshikawa, M. Akita, T. Morimoto, T. Ushio, Z. Kawasaki, T. Saito, T. Nishida, and N. Sakazume, High-resolution Precipitation and Lightning Monitoring by the Ku-band Broadband Radar and the VHF Broadband Digital Interferometer, IEEJ Transactions on Fundamentals and Materials, 129, 12, pp.845-852, 2009.

  3. Y. Nakamura, T. Morimoto, T. Ushio, Z.-I. Kawasaki, An Error Estimate of the VHF Broadband Digital Interferometer, IEEJ Trans. Fundam. Mater., 129, 8, pp 525-530, 2009.

  4. F. Nakano, T. Morimoto, T. Ushio, and Z. Kawasaki, An Instability Index for Lightning Prediction in Typhoon, IEEJ Transactions on Fundamentals and Materials, 129, 12, pp.859-864, 2009.

  5. S. Yoshida, M. Akita, Y. Nakamura, T. Morimoto, T. Ushio, Z.-I. Kawasaki, D. Wang, and N. Takagi, Evidence of negative leaders prior to fast rise ICC pulses of upward lightning, J. Atmos. Electr., vol. 29, 1, 13-21, 2009.

  6. T. Ushio, K. Sasashige, T. Kubota, S. Shige, K. Okamoto, K. Aonashi, T. Inoue, N. Takahashi, T. Iguchi, M. Kachi, R. Oki, T. Morimoto, and Z-I. Kawasaki, A Kalman filter approach to the Global Satellite Mapping of Precipitation (GSMaP) from combined passive microwave and infrared radiometric data, Journal of the Meteorological Society of Japan, 87A, pp. 137-151, 2009.

  7. E. Yoshikawa, T. Mega, T. Morimoto, T. Ushio, Z.-I. Kawasaki, Real-Time spectral moments estimation and ground clutter suppression for precipitation radar with high resolution, IEICE Transactions on Communications, E92-B, 2, pp.578-584, 2009.
►International Conferences
  1. S. Yoshida, C. J. Biagi, V. A. Rakov, M. A. Uman, D. M. Jordan, J. D. Hill, T. Morimoto, T. Ushio, and Z.-I. Kawasaki, Rocket triggered lightning observed by VHF broadband digital interferometers, (Abstract) AGU 2009 Fall Meeting, California, USA, December 2009. (Poster, Reviewed)

  2. M. Sato, T. Ushio, T. Morimoto, M. Suzuki, A. Yamazaki, M. Kikuchi, R. Ishida, Y. Takahashi, U. S. Inan, Y. Hobara, Y. Sakamoto, K. Yoshida, H. Ishikawa, K. Yoshita, Science goal and mission status of JEM-GLIMS, (Abstract) AGU 2009 Fall Meeting, California, USA, December 2009. (Reviewed)

  3. T. Morimoto, H. Kikuchi, T. Ushio, Z.-I. Kawasaki, H. Hashimoto, T. Aoki, Broadband VHF observations for lightning impulses from a small satellite SOHLA-1 (Maido-1), (Abstract) AGU 2009 Fall Meeting, California, USA, December 2009. (Poster, Reviewed).

  4. Y. Nakamura, M. Akita, T. Morimoto, T. Ushio, Z. Kawasaki, M. Shimizu, and M. Miki, The bi-directional leader observation in positive cloud-to-ground lightning flashes during summer thunderstorm season, AGU 2009 Fall Meeting, California, USA, December 2009. (Poster, Reviewed).

  5. F. Nakano, T. Morimoto, T. Ushio, and Z.-I. Kawasaki, Spatial and Temporal Characteristics of Lightning in Typhoon, the 4th Japan-China-Korea Joint Conference on Meteorology, Ibaraki, Japan, November 2009.

  6. E. Yoshikawa, K. Imai, T. Morimoto, T. Ushio, and Z.-I. Kawasaki, Evaluation of high resolution precipitation profiles obtained by Ku-band broad band radar, International Symposium on Radar and Modeling Studies of the Atmosphere, Kyoto, Japan, November 2009.

  7. M. Akita, S. Yoshida. T. Morimoto, T. Ushio, and Z.-I. Kawasaki, Observations of Bipolar Lightning Flashes Using the VHF Broadband Digital Interferometer, the 2009 International Symposium on Electromagnetic Compatibility, Kyoto, Japan, July 2009. (Reviewed)

  8. E. Yoshikawa, T. Ushio, T. Morimoto, Z. Kawasaki, T. Mega, K. Imai, T. Nishida, T. Saito, and N. Sakazume, Rainfall observation with high resolution using Ku-band broad band radar, IEEE Radar Conference, Pasadena, USA, May 2009.

  9. Y. Nakamura, T. Morimoto, T. Ushio, Z. Kawasaki and M. Shimizu, Three-Dimensional VHF Observations of Positive Cloud-to-Ground Flashes in Summer Thunderstorm Season, 2009 International Symposium on Electromagnetic Compatibility, Kyoto, Japan, July 2009.

  10. F. Nakano, T. Morimoto, T. Ushio, and Z.-I. Kawasaki, Lightning Distribution in Tropical Cyclones Observed by the TRMM/LIS, the 2009 International Symposium on Electromagnetic Compatibility, Kyoto, Japan, July 2009.

・Publications in 2008

►Journals
  1. S. Yoshida, T. Morimoto, T. Ushio, Z.-I. Kawasaki, T. Torii, D. Wang, N. Takagi, and T. Watanabe, High energy photon and electron bursts associated with upward lightning strokes, Geophys. Res. Lett., vol. 35, L10804, doi:10.1029/2007GL032438, 2008.

  2. S. Yoshida, T. Morimoto, T. Ushio, Z.-I. Kawasaki, Energetic radiation bursts associated with lightning, IEEJ Transactions on Fundamentals and Materials, 128, 1, pp. 9-13, 2008.
►International Conferences
  1. T. Morimoto, T. Ushio, and Z. Kawasaki, Comprehensive thunderstorm observations by the broadband radar network, The XXIXth URSI General Assembly, Illinois, U.S.A., August 2008.

  2. T. Ushio, E. Yoshikawa, T. Mega, T. Morimoto, and Z.-I. Kawasaki, Broad band radar for high resolution observation of precipitation, IEEE Radar Conference, Rome, Italy, May 2008.

  3. S. Yoshida, M. Akita, T. Morimoto, T. Ushio, Z.-I. Kawasaki, D. Wang, and N. Takagi, Evidence of negative leaders which precede fast rise ICC pulses of upward lightning, (Abstract) AGU 2008 Fall Meeting, California, USA, December 2008. (Poster, Reviewed)

  4. Y. Nakamura, K. Murata, T. Morimoto, T. Ushio, and Z.-I. Kawasaki, Spider-like lightning observation using VHF broadband digital interferometer, (Abstract) AGU 2008 Fall Meeting, California, USA, December 2008. (Poster, Reviewed)

  5. E. Yoshikawa, T. Mega, T. Ushio, T. Morimoto, Z.-I. Kawasaki, Development and Observation of the Ku-band Broad-band Radar for Meteorological Application, 2008 IEEE International Geoscience & Remote Sensing Symposium, Boston, U.S.A, July 2008.

  6. S. Yoshida, T. Morimoto, T. Ushio, and Z.-I. Kawasaki, ENSO and convective activities in Southeast Asia and the western Pacific, The 3rd TRMM International Science Conference, Nevada, USA, February 2008. (Poster)

  7. F. Nakano, T. Morimoto, T. Ushio and Z.-I. Kawasaki, On the parameterization of the electrical feature of the thundercloud in typhoon, The 3rd TRMM International Science Conference, Nevada, USA, February 2008. (Poster)

・Publications in 2007

►Journals
  1. S. Yoshida, T. Morimoto, T. Ushio, and Z.-I. Kawasaki, ENSO and convective activities in South-East Asia and Western Pacific, Geophys. Res. Lett., vol. 34, L21806, doi:10.1029/2007GL030758, 2007.
►International Conferences
  1. S. Yoshida, T. Morimoto, N. Nakazato, T. Ushio, and Z.-I. Kawasaki, Global impact of ENSO events by TRMM observations, 13th International Conference on Atmospheric Electricity, Beijing China, August 2007. (Oral, Reviewed)

  2. S. Yoshida, M. Sato, T. Morimoto, T. Ushio, Z.-I. Kawasaki, and T. Torii, Radiation Bursts Synchronizing with Lightning Discharges in Hokuriku, Japan, 13th International Conference on Atmospheric Electricity, Beijing China, August 2007. (Oral, Reviewed)

  3. Y. Nakamura, M. Akita, T. Morimoto, T. Ushio, Z.-I. Kawasaki, Lower atmospheric radar observations of thunderclouds in summer, 13th International Conference on Atmospheric Electricity, Beijing China, August 2007. (Poster, Reviewed)

  4. M. Akita, K. Hirai, M. Satoh, Y. Nakamura, T. Morimoto, T. Ushio, and Z.-I. Kawasaki, Three-dimensional VHF Observations Using Advanced VHF Broadband Digital Interferometer, 13th International Conference on Atmospheric Electricity, Beijing China, August 2007. (Oral, Reviewed)

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