OPTICAL PROPERITES OF ATMOSPHERIC AEROSOLS IN THE PACIFIC OCEAN

• FUJITANI Yuji

  Graduate School of Engineering, Hokkaido University National Institure for Environmental Studies, PM2.5·DEP Research Project

• OHTA Sachio

  Graduate School of Engineering, Hokkaido University

• MURAO Naoto

  Graduate School of Engineering, Hokkaido University

• YAMAGATA Sadamu

  Graduate School of Engineering, Hokkaido University

• ENDOH Tatsuo

  Department of Environmental Studies and Management, Tottori University of Environmental Studies

Bibliographic Information

Other Title

• 太平洋域大気エアロゾルの光学特性
• Atmospheric Aerosols over the Western Pacific Ocean during the R V Mirai Cruises in 2002

Abstract

Aerosols optical models are necessary to retrieve aerosol distributions from satellite data and to estimate aerosol direct climate forcing, however, aerosol optical properties such as single scattering albedo (ω) and optical thickness are rare information over ocean. In this study, the aerosol optical and chemical properties were measured from 1999 to 2003 in the western Pacific Ocean on board the research vessel Mirai. We encountered mainly four air masses which included maritime air mass, air mass influenced by fossil fuel combustion, that influenced by biomass burning, and dust plume in these cruises. The values of ω ranged from 0.68 in biomass burning to 0.99 in marine air mass. The region between 30° N and 40° N, air mass was influenced by aerosols emitted from fossil fuel combustion both in the summer and winter cruises. Since absorptive aerosols were measured in the winter cruise, the mean value of ω in this region in the winter cruise was 0.74, while transparent aerosols were measured in the summer cruise (mean value of ω was 0.92). This seasonal difference mainly comes from a difference in the concentration of elemental carbon.

Journal

• Proceedings of the Symposium on Global Environment

  Proceedings of the Symposium on Global Environment 12 259-264, 2004

  Japan Society of Civil Engineers

Keywords

• Aerosols
• Optical properties
• Pacific Ocean

Details

• CRID: 1390001205403424384
• NII Article ID: 110001817359
• NII Article ID: 130004434872
• NII Book ID: AA00702524
• DOI: 10.2208/proge.12.259
• DOI: 10.2151/jmsj.2004.1417
• ISSN: 18848419
• ISSN: 21869057
• ISSN: 00261165
• NDL BIB ID: 7127780
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I7127780
• Web Site: http://www.jstage.jst.go.jp/article/jmsj/82/5/82_5_1417/_pdf
• Web Site: http://dl.ndl.go.jp/info:ndljp/pid/10612381
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • NDL-Digital
  • CiNii Articles
• Abstract License Flag: Disallowed