Clarification of the characteristics of aerosol particles in tropical upper troposphere

2012 Fiscal Year Final Research Report

• Project/Area Number: 22241004
• Research Category: Grant-in-Aid for Scientific Research (A)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Environmental dynamic analysis
• Research Institution: Nagoya University
• Principal Investigator: SHIBATA Takashi 名古屋大学, 環境学研究科, 教授 (70167443)
• Co-Investigator(Kenkyū-buntansha): HASEBE Fumio 北海道大学, 地球環境学研究科, 教授 (00261735) ; IWASAKI Suginori 防衛大学校, 応用科学群, 講師 (30535274) ; HAYASHI Masahiko 福岡大学, 理学部, 教授 (50228590)
• Project Period (FY): 2010 – 2012
• Keywords: 熱帯圏界面 / エアロゾル / 巻雲 / 氷晶核 / 脱水 / ライダー / OPC / 露点湿度計

Research Abstract

In this study, we obtained the vertical distributions of size distribution and temperature dependence of volatility of aerosols, backscatteringcoefficients of aerosols and cirrus clouds, and humidity, using balloon borne optical particle counter, ground based lidar, and cryogenic frost point hygrometer, respectively, in tropical tropopause layer over Biak, Indonesia. We clarified the mechanism how the high super saturation of the humidity over ice is formed by using microphysical numerical model applying the observed parameters.

Research Products

• [Journal Article] Dehydration in the tropical tropopause layer estimated from the water vapor match (2013)
  • Author(s): Y. Inai, F. Hasebe, M. Fujiwara, M. Shiotani, N. Nishi, S.-Y. Ogino, H. Vomel, S. Iwasaki, and T. Shibata
  • Journal Title: Atmos. Chem. Phys. Discuss Volume: 13 Pages: 633-688
• [Journal Article] High supersaturation inside cirrus in well-developed tropical tropopause layer over Indonesia (2012)
  • Author(s): Inai, Y., T. Shibata, M. Fujiwara, F. Hasebe, and H. Voemel
  • Journal Title: Geophys. Res. Lett.
  • DOI: DOI:10.1029/2012GL053638
  • Peer Reviewed
• [Journal Article] Cirrus cloud appearance in a volcanic aerosol layer around the tropical cold point tropopause over Biak, Indonesia in January 2011 (2012)
  • Author(s): T. Shibata, M. Hayashi, A. Naganuma, N. Hara, K. Hara, F. Hasebe, K. Shimizu, N. Komala, Y. Inai, H. Voemel, S. Hamdi, S. Iwasaki, M. Fujiwara, M. Shiotani, S.-Y. Ogino, and N. Nishi
  • Journal Title: J. Geophys. Res. Volume: 117 Pages: D11209
  • DOI: DOI:10.1029/2011JD017029
  • Peer Reviewed
• [Journal Article] Mixtures of stratospheric and overshooting air measured using A-train sensors (2012)
  • Author(s): Suginori Iwasaki, Takashi Shibata, Hajime Okamoto, Hiroshi Ishimoto, and Hisayuki Kubota
  • Journal Title: J. Geophys. Res. Volume: 117 Pages: D12207
  • DOI: DOI:10.1029/2011JD017402
  • Peer Reviewed
• [Journal Article] Cold trap dehydration in the Tropical Tropopause Layer characterized by SOWER chilled-mirror hygrometer network data in the Tropical Pacific (2012)
  • Author(s): F. Hasebe, Y. Inai, M. Shiotani, M. Fujiwara, H. Vomel, N. Nishi, S.-Y. Ogino, T. Shibata, S. Iwasaki, N. Komala, T. Peter, and S. J. Oltmans
  • Journal Title: Atmos. Chem. Phys. Discuss. Volume: 12 Pages: 25833-25885
• [Presentation] 熱帯圏界面層でのエアロゾルと巻雲生成に関する数値実験 (2012)
  • Author(s): 櫻井万祐子、柴田隆
  • Organizer: 日本気象学会秋季大会
  • Place of Presentation: 北海道大学
  • Year and Date: 20121003-05
• [Presentation] オーバーシュート解析におけるMODIS と IIR の輝度温度の違い (2012)
  • Author(s): 岩崎杉紀、久保田尚之、柴田隆、岡本創、石元裕史
  • Organizer: 日本気象学会秋季大会
  • Place of Presentation: 北海道大学
  • Year and Date: 20121003-05
• [Presentation] 熱帯圏界面付近で観測された火山性エアロゾル層とその中での巻雲生成 (2012)
  • Author(s): 柴田隆、林政彦、原圭一郎、長沼歩、原直子、稲飯洋一、長谷部文雄、清水健作
  • Organizer: エアロゾル科学・技術討論会
  • Place of Presentation: 北九州学術研究都市
  • Year and Date: 20120828-30
• [Presentation] 2012 年 1 月の Biak 上空 TTL 領域のエアロゾル揮発特性の鉛直分布 (2012)
  • Author(s): 林政彦、武田尚太、長沼歩、原圭一郎、柴田隆
  • Organizer: 日本気象学会春季大会
  • Place of Presentation: つくば国際会議場
  • Year and Date: 20120526-29
• [Presentation] 中高緯度の対流圏界面まで達する深い対流 (2012)
  • Author(s): 岩崎杉紀、久保田尚之、柴田隆、岡本創、石元裕史
  • Organizer: 日本気象学会春季大会
  • Place of Presentation: つくば国際会議場
  • Year and Date: 20120526-29
• [Remarks]
  • URL: http://www.stelab.nagoya-u.ac.jp/~tshibata/kibanA.htm