Observational study of the stratospheric and mesospheric water vapor isotopomers and ozone over Atacama highland in Chile

2008 Fiscal Year Self-evaluation Report

• Project/Area Number: 18403008
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 海外学術
• Research Field: Meteorology/Physical oceanography/Hydrology
• Research Institution: Nagoya University
• Principal Investigator: MIZUNO Akira Nagoya University, 太陽地球環境研究所, 教授 (80212231)
• Project Period (FY): 2006 – 2009
• Keywords: 環境変動 / 大気現象 / リモートセンシング / 超伝導材料・素子

Research Abstract

本研究は、南米チリ共和国のアタカマ高地に設置した超伝導ミリ波分光放射計を用い、水蒸気同位対比およびオゾンの連続観測を行い、成層圏から中間圏における放射バランスの鍵を握る水蒸気とオゾンの季節変化・経年変化の実態把握とその変動メカニズムの解明を目指している。
上記の目的を達成するため、以下の項目にわたり観測装置の開発とそれを用いた観測を行う。
(1) 180-210GHz帯および250GHz帯のデュアルサイドバンド受信器用の超伝導素子の低雑音化開発を進める。
(2) 現有の180-210GHz帯大気分子分光観測装置を用いたH_2OおよびH_2^(18)Oの連続観測を行う。
(3) 新たな250GHz帯大気分子分光観測装置を開発し、水蒸気同位体HDOのスペクトル観測を行う。
(4) 亜熱帯域に位置するアタカマ高地における成層圏および中間圏水蒸気とその同位体の高度別季節変動・経年変化等の動態を観測的に明らかにする。

Research Products

• [Journal Article] Ground-based millimeter-wave observations of water vapor emission (183GHz) at Atacama, Chile (2008)
  • Author(s): T. Kuwahara, A. Mizuno, T. Nagahama, H. Maezawa, A. Morihira, N. Toriyama, S. Murayama, M. Matsuura, T. Sugimoto, S. Asayama, N. Mizuno, T. Onishi and Y. Fukui
  • Journal Title: Adv. Space, Res. 42 Pages: 1167-1171
  • Peer Reviewed
• [Journal Article] Ground-based millimeter-wave radiometer for measuring the stratospheric ozone over Rikubetsu, Japan (2008)
  • Author(s): T. Nagahama, H. Nakane, Y. Fujinuma, A. Morihira, A. Mizuno, H. Ogawa and Y. Fukui
  • Journal Title: J. Meteor. Soc. Japan 85 Pages: 495-509
  • Peer Reviewed
• [Journal Article] Continuous measurements of the stratospheric and mesospheric ozone by using ground-based millimeter-wave radiometers (2006)
  • Author(s): T. Nagahama, A. Mizuno, H. Maezawa, H. Nakane, Y. Fujinuma, A.Morihira, H. Ogawa and Y. Fukui
  • Journal Title: Proceedings of the International Conference on Submillimeter Science Technology(ICSST 04)
  • Peer Reviewed
• [Presentation] Ground-based millimeter-wave measurements of stratospheric H_2^(18)O over Atacama highland, Chile (2008)
  • Author(s): A. Mizuno, T. Nagahama, H. Maezawa, T. Kuwahara, N. Toriyama, A. Morihira, H. Nakane, N. Mizuno and Y. Fukui
  • Organizer: Quadrennial Ozone Symposium 2008
  • Place of Presentation: Tromso
  • Year and Date: 20080625-0705
• [Presentation] Ground-based millimeter-wave measurements of stratospheric H_2^(18)O in a subtropical region in the southern hemisphere, Atacama highland in Chile (2007)
  • Author(s): A. Mizuno, T. Sugimoto, T. Nagahama, H. Maezawa, T. Kuwahara, M. Matsuura, N. Toriyama, Y. Fukui, N. Mizuno, T. Onishi, H. Nakane and A. Morihira
  • Organizer: IUGG 24th General Assembly
  • Place of Presentation: Perugia
  • Year and Date: 20070702-13
• [Presentation] A new mm-wave spectroscopic radiometer for the measurements of stratospheric and mesospheric water vapor isotopomers (2006)
  • Author(s): A. Mizuno, T. Nagahama, H. Maezawa, T. Kuwahara, A. Morihira, N. Toriyama, S. Murayama, M. Matsuura, T. Sugimoto, S. Asayama
  • Organizer: 36th COSPAR Scientific Assembly
  • Place of Presentation: Beijing
  • Year and Date: 20060716-20060723
• [Presentation] Ground-based millimeter-wave observations of water vapor emission (183 GHz) at Atacama, Chile (2006)
  • Author(s): T. Kuwahara, A. Mizuno, T. Nagahama, H. Maezawa, A. Morihira, N. Toriyama, S. Murayama, M. Matsuura, T. Sugimoto, S. Asayama
  • Organizer: AOGS 2006 Third Annual Meeting
  • Place of Presentation: Singapore
  • Year and Date: 20060710-20060714
• [Remarks]
  • URL: http://skx1.stelab.nagoya-u.ac.jp/index.html