3-D observations of the upper atmosphere using new incoherent scatter radar techniques

• Project/Area Number: 26610158
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Space and upper atmospheric physics
• Research Institution: National Institute of Polar Research
• Principal Investigator: Ogawa Yasunobu 国立極地研究所, 国際北極環境研究センター, 准教授 (00362210)
• Co-Investigator(Renkei-kenkyūsha): TSUTSUMI MASAKI 国立極地研究所, 研究教育系, 准教授 (80280535)
• Project Period (FY): 2014-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000); Fiscal Year 2015: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000); Fiscal Year 2014: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
• Keywords: 地球惑星電離圏 / レーダー工学 / 非干渉散乱 / 超高層大気

Outline of Final Research Achievements

The next generation incoherent scatter radar (EISCAT_3D) will enable us to investigate three-dimensional structures of the upper atmosphere, and we need several verifications of multi-static phased-array techniques for its realization. In this study, we performed multi-static and multi-beam observations using the current EISCAT VHF radar and the proto-type phased-array receiver (KAIRA). We succeeded in receiving 2 beams of the VHF radars with the KAIRA receiver separately, and also compared data obtained from the multi-narrow beam observations with results using post-beam steering techniques.

Research Products

• [Journal Article] Ionospheric variation during pulsating aurora (2015)
  • Author(s): Hosokawa, K. and Y. Ogawa
  • Journal Title: J. Geophys. Res. Volume: 120 Issue: 7 Pages: 5943-5957
  • DOI: 10.1002/2015ja021401
  • Peer Reviewed / Open Access
• [Journal Article] The science case for the EISCAT_3D radar (2015)
  • Author(s): McCrea, I. W., A. Aikio, L. Alfonsi, E. Belova, S. Buchert, M. Clilverd, N. Engler, B. Gustavsson, C. Heinselman, J. Kero, M. Kosch, H. Lamy, T. Leyser, Y. Ogawa, K. Oksavik, A. Pellinen-Wannberg, F. Pitout, M. Rapp, I. Stanislawska, and J. Vierninen
  • Journal Title: Progress in Earth and Planetary Science Volume: 2:21 Issue: 1 Pages: 1-63
  • DOI: 10.1186/s40645-015-0051-8
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Upper atmosphere cooling over the past 33 years (2014)
  • Author(s): Ogawa, Y., T. Motoba, S. C. Buchert, I. Haggstrom and S. Nozawa
  • Journal Title: Geophys. Res. Lett. Volume: 41 Issue: 15 Pages: 5629-5635
  • DOI: 10.1002/2014gl060591
  • Peer Reviewed
• [Journal Article] Ionospheric electron density profiles inverted from a spectral riometer measurement (2014)
  • Author(s): Kero, A., J. Vierinen, D. McKay-Bukowski, C.-F. Enell, M. Sinor, L. Roininen, and Y. Ogawa,
  • Journal Title: Geophys. Res. Lett. Volume: 41 Issue: 15 Pages: 5370-5375
  • DOI: 10.1002/2014gl060986
  • Peer Reviewed
• [Presentation] Study on ion upflow based on high latitude IS radars and future EISCAT_3D (2015)
  • Author(s): Ogawa, Y.
  • Organizer: JpGU2015 meeting
  • Place of Presentation: Makuhari Messe, Chiba
  • Year and Date: 2015-05-28