Development of the Isotope Regional Model and It's Application to a Typhoon

2008 Fiscal Year Final Research Report

• Project/Area Number: 18740302
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Meteorology/Physical oceanography/Hydrology
• Research Institution: Kumamoto University (2008); Japan Agency for Marine-Earth Science and Technology (2006-2007)
• Principal Investigator: ICHIYANAGI Kimpei Kumamoto University, 大学院・自然科学研究科, 准教授 (50371737)
• Project Period (FY): 2006 – 2008
• Keywords: 気象

Research Abstract

沖縄県石垣島において,2つの大きな台風(T0613とT0813)の降水と水蒸気の安定同位体の詳細な観測に世界で初めて成功した.これら同位体比の短時間変動より,台風の壁雲の外側と内側では水蒸気の起源が大きく異なることを明らかにした.また,同位体領域モデル(Iso-RSM)によりT0613の同位体比変動の再現に成功したが,d-excessは再現できなかった.これは海水飛沫の影響が大きいためと推定できる.

Research Products

• [Journal Article] 東アジアにおける降水d-excess季節変動に関する再考察 (2009)
  • Author(s): 芳村圭・一柳錦平
  • Journal Title: 水文・水資源学会誌 (掲載決定)
  • Peer Reviewed
• [Journal Article] Isotope ratios of precipitation and water vapor observed in Typhoon Shanshan(doi:10.1029/2007JD009313) (2008)
  • Author(s): Fudeyasu, H., K. Ichiyanagi, A. Sugimoto, K Yoshimura, A. Ueta, M. D. Yamanaka, and K. Ozawa
  • Journal Title: J. Geophys. Res 113 Pages: D12113
  • Peer Reviewed
• [Presentation] Isotope ratios of precipitation and water vapor observed in Typhoon Shanshan (2008)
  • Author(s): Kimpei Ichiyanagi, Hironori Fudeyasu, and Kei Yoshimura
  • Organizer: Third International Workshop on High-Resolution and Cloud Modeling-Tropical Cyclones and Climate
  • Place of Presentation: The University of Hawaii, Honolulu
  • Year and Date: 20081202-04
• [Presentation] Characteristics of stable isotopes in rainfall and stream water in Ishigaki Island, Japan (2008)
  • Author(s): Kimpei Ichiyanagi, Yoshiko Iizumi, and Kiyoshi Ozawa
  • Organizer: XXXVI International Association of Hydrogeologists (IAH) Congress
  • Place of Presentation: Toyama International Conference Center
  • Year and Date: 20081026-31
• [Presentation] Stable isotopes of rain and water vapor in Typhoon Shanshan(2006) observed in Ishigaki Island, Japan (2007)
  • Author(s): Kimpei Ichiyanagi, Hironori Fudeyasu, Atsuko Sugimoto, Akihiro Ueta
  • Organizer: Asia Oceania Geosciences Society(AOGS) 4nd Annual Meeting
  • Place of Presentation: Bangkok, Thailand
  • Year and Date: 20070730-0804
• [Presentation] Isotope ratios of rainfall and water vapor observed in Typhoon Shanshan (2007)
  • Author(s): Fudeyasu Hironori, Kimpei Ichiynagi, Atsuko Sugimoto, Akihiro Ueta, Kei Yoshimura, Manabu D. Yamanaka
  • Organizer: The XXIV IUGG General Assembly
  • Place of Presentation: Perugia, Italy
  • Year and Date: 20070702-13