Evaluation of source contribution and horizontal distribution of black carbon aerosols in the NW Pacific region using carbon isotopes

2011 Fiscal Year Final Research Report

• Project/Area Number: 21310017
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Environmental dynamic analysis
• Research Institution: National Institute of Advanced Industrial Science and Technology
• Principal Investigator: KANEYASU Naoki 独立行政法人産業技術総合研究所, 環境管理技術研究部門, 主任研究員 (00356809)
• Co-Investigator(Kenkyū-buntansha): MURAYAMA Shohei 独立行政法人産業技術総合研究所, 環境管理技術研究部門, グループ長 (30222433) ; OHARA Toshimasa 独立行政法人国立環境研究所, 地域環境研究センター, センター長 (80313930) ; UCHIDA Masao 独立行政法人国立環境研究所, 化学環境研究領域, 主任研究員 (50344289)
• Project Period (FY): 2009 – 2011
• Keywords: 環境変動 / 環境分析 / 大気現象 / 大気エアロゾル / 黒色炭素粒子 / 炭素同位体 / 長距離輸送

Research Abstract

PM_<2.5> aerosols have been collected at Fukue Is., Cape Hedo of Okinawa Is., and Chi-chi jima Is. to identify the relative source contribution of black carbon since 2009 autumn. Carbon isotope analysis for one-week averaged aerosol sample showed thatδ^<13> C in the black carbon collected at Fukue decreased below-26.0‰in summer but increased in autumn, winter and spring, suggesting that contribution of motor vehicle exhaust is high in summer and that of combustion from coal and C4 plant is high in the rest of the year. The analysis of Cape Hedo and Chi-chi jima Is. is still underway.

Research Products

• [Journal Article] 九州北部の離島および大都市部におけるPM_<2.5>濃度の通年での挙動 (2011)
  • Author(s): 兼保直樹,高見昭憲,佐藤圭,畠山史郎,林政彦,原圭一郎,河本和明,山本重一
  • Journal Title: 大気環境学会誌 Volume: 46(2) Pages: 111-118
  • Peer Reviewed
• [Journal Article] The impact of China's vehicle emissions on regional air quality in 2000 and 2020 : a scenario analysis (2011)
  • Author(s): Saikawa, E., J. Kurokawa, M. Takigawa, J. Borken-Kleefeld, D. L. Mauzerall, L. W. Horowitz, and T. Ohara
  • Journal Title: Atmos. Chem. Phys. Volume: 11 Pages: 9465-9484
  • DOI: doi:10.5194/acp-11-9465-2011.
  • Peer Reviewed
• [Presentation] わが国バックグラウンド域におけるPM_<2.5>中炭素系粒子の観測 (2011)
  • Author(s): 兼保直樹,村山昌平,畠山史郎,佐川竜也,田部貴大,野口泉,原圭一郎,林政彦,島田幸治郎,長谷川就一
  • Organizer: 第28回エアロゾル科学・技術研究討論会
  • Place of Presentation: 大阪(大阪府立大学)
  • Year and Date: 2011-08-02
• [Presentation] Recent advances of radiocarbon measurements at NIES TERRA (2011)
  • Author(s): Uchida, M., Kondo, M., Iida, N., Shinozaki, T., Matsuda, A., Minoura, Y., Shibata Y
  • Organizer: Accelerator Mass Spectrometry 2011
  • Place of Presentation: Wellington, New Zealand
  • Year and Date: 2011-03-22
• [Presentation] Long-term measurement of aerosols on a remote island in the Northwest Pacific Ocean (2010)
  • Author(s): Kaneyasu, N.
  • Organizer: The 8th International Aerosol Conference
  • Place of Presentation: Helsinki, Finland
  • Year and Date: 2010-09-01