Observational study of atmospheric aerosol and gas variations over Asia

• Project/Area Number: 20840052
• Research Category: Grant-in-Aid for Young Scientists (Start-up)
• Allocation Type: Single-year Grants
• Research Field: Meteorology/Physical oceanography/Hydrology
• Research Institution: Japan Agency for Marine-Earth Science and Technology
• Principal Investigator: TAKASHIMA Hisahiro Japan Agency for Marine-Earth Science and Technology, 地球環境変動領域, ポストドクトラル研究員 (20469620)
• Project Period (FY): 2008 – 2009
• Project Status: Completed (Fiscal Year 2009)
• Budget Amount: ¥3,276,000 (Direct Cost: ¥2,520,000、Indirect Cost: ¥756,000); Fiscal Year 2009: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000); Fiscal Year 2008: ¥1,716,000 (Direct Cost: ¥1,320,000、Indirect Cost: ¥396,000)
• Keywords: エアロゾル / 二酸化窒素 / 越境大気汚染 / MAX-DOAS / OMI / NO2

Research Abstract

Atmospheric aerosol and NO_2 variations at Okinawa Island in Japan were investigated using Multi-Axis Differential Optical Absorption Spectroscopy (MAX-DOAS) measurements, focusing primarily on transboundary air pollution from China. The results showed that NO_2 enhancement at Okinawa during northern winter-spring was controlled by rapid air mass transport from China. A new cloud-screening method using MAX-DOAS data based on the physical properties of clouds was developed to evaluate aerosol variations. Comparison with satellite measurements as well as ground based measurements were also performed.

Research Products

• [Journal Article] Atmospheric aerosol variations at Okinawa Island in Japan observed by MAX-DOAS using a new cloud-screening method (2009)
  • Author(s): Takashima, H., H. Irie, Y. Kanaya, A. Shimizu, K. Aoki, H. Akimoto
  • Journal Title: Journal of Geophysical Research 114
  • Peer Reviewed
• [Journal Article] Atmospheric aerosol variations at Okinawa Island in Japan observed by MAX-DOAS using a new cloud-screening method (2009)
  • Author(s): Takashima, H
  • Journal Title: Journal of Geophysical Research 114
  • Peer Reviewed
• [Presentation] Aerosol and gas profile observations by MAX-DOAS on a research vessel (2009)
  • Author(s): Takashima, H.
  • Organizer: SOLAS open science conference
  • Place of Presentation: Barcelona, Spain (Cosmo Caixa)
  • Year and Date: 2009-11-17
• [Presentation] Aerosol and gas profile observations by MAX-DOAS on a research vessel (2009)
  • Author(s): Takashima, H.
  • Organizer: SOLAS open science conference
  • Place of Presentation: Barcelona, Spain Cosmo Caixa
  • Year and Date: 2009-11-17
• [Presentation] Enhanced NO2 at Okinawa Island, Japan by rapid airmass transport from mainland China as observed by MAX-DOAS (2009)
  • Author(s): Takashima, H.
  • Organizer: European Geophysical Union General Assembly
  • Place of Presentation: Vienna, A ustria (Austria Center Vienna)
  • Year and Date: 2009-04-23
• [Presentation] Enhanced NO2 at Okinawa Island, Japan by rapid airmass transport from mainland China as observed by MAX-DOAS (2009)
  • Author(s): Takashima, H.
  • Organizer: European Geophysical Union General Assembly
  • Place of Presentation: Vienna, Austria Austria Center Vienna
  • Year and Date: 2009-04-23
• [Presentation] Atmospheric aerosol and gas variations at Cape Hedo in Japan observed by ground-based MAX-DOAS (2008)
  • Author(s): Takashima, H.
  • Organizer: GMAO seminar, NASA GSFC/GMAO
  • Place of Presentation: NASA GSFC/GMAO, Maryland, USA
  • Year and Date: 2008-12-22
• [Presentation] Atmospheric aerosol variation at Okinawa Island in Japan observed by MAX-DOAS using a new cloud screening methods (2008)
  • Author(s): Takashima, H.
  • Organizer: AGU Fall Meeting
  • Place of Presentation: San Francisco
  • Year and Date: 2008-12-15
• [Presentation] Atmospheric aerosol variation at Okinawa Island in Japan observed by MAX-DOAS using a new cloud screening methods (2008)
  • Author(s): Takashima, H.
  • Organizer: AGU Fall Meeting
  • Place of Presentation: San Francisco moscone center
  • Year and Date: 2008-12-15
• [Presentation] MAX-DOAS観測データをもちいた雲判別 (2008)
  • Author(s): 高島久洋
  • Organizer: 日本気象学会2008年度秋季大会
  • Place of Presentation: 仙台国際センター, 仙台
  • Year and Date: 2008-11-20
• [Presentation] MAX-DOAS観測データをもちいた雲判別 (2008)
  • Author(s): 高島久洋
  • Organizer: 日本気象学会2008年度秋季大会
  • Place of Presentation: 仙台市、仙台国際センター
  • Year and Date: 2008-11-20
• [Presentation] 沖縄県辺戸岬におけるMAX-DOASエアロゾル連続観測 (2008)
  • Author(s): 高島久洋
  • Organizer: 第14回大気化学討論会
  • Place of Presentation: 海洋研究開発機構, 横浜
  • Year and Date: 2008-10-31
• [Presentation] 沖縄県辺戸岬におけるMAX-DOASエアロゾル連続観測 (2008)
  • Author(s): 高島久洋
  • Organizer: 第14回大気化学討論会
  • Place of Presentation: 海洋研究開発機構,横浜
  • Year and Date: 2008-10-31
• [Presentation] 沖縄県辺戸岬におけるNO2変動 (2008)
  • Author(s): 高島久洋
  • Organizer: 第14回大気化学討論会
  • Place of Presentation: 海洋研究開発機構, 横浜
  • Year and Date: 2008-10-30
• [Presentation] 沖縄県辺戸岬におけるNO2変動 (2008)
  • Author(s): 高島久洋
  • Organizer: 第14回大気化学討論会
  • Place of Presentation: 海洋研究開発機構,横浜
  • Year and Date: 2008-10-30