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2011 Fiscal Year Final Research Report

Impact of aerosols on the global dimming and brightening

Research Project

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Project/Area Number 22740316
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeSingle-year Grants
Research Field Meteorology/Physical oceanography/Hydrology
Research InstitutionJapan, Meteorological Research Institute

Principal Investigator

KUDO Rei  気象庁気象研究所, 気候研究部, 研究官 (00414508)

Project Period (FY) 2010 – 2011
Keywords気候変動 / エアロゾル / 地上日射 / 大気放射 / 光学特性
Research Abstract

Surface solar radiation in the world has a decreasing trend until the 1980s(global dimming) and an increasing trend up to now(global brightening). In order to evaluate the impact of aerosols on the dimming and brightening, we estimated two aerosol optical properties, which represent the aerosol amount and light absorption, from the long-term measurements of the surface broadband solar radiation in the world. Using the measurements from 1976 to 2008 at 14 sites in Japan, we found the increase of the amount of light absorptive aerosols in the 1980s. Both an increase of aerosol amount and an increase of light absorption mean a decrease of surface solar radiation. The dimming and brightening in Japan was attributed to these changes in aerosols. At 28 sites in the world, the aerosol amount increased from 1995 to 2010, but the light absorption weakened. Therefore, the impact of aerosols on the brightening at the analyzed 28 sites was small.

  • Research Products

    (11 results)

All 2012 2011 2010

All Journal Article (5 results) (of which Peer Reviewed: 5 results) Presentation (6 results)

  • [Journal Article] Aerosol impact on the brightening in Japan2012

    • Author(s)
      Kudo, R., A. Uchiyama, O. Ijima, N. Ohkawara, and S. Ohta
    • Journal Title

      J. Geophys. Res

      Volume: 117 Pages: D07208

    • DOI

      doi:10.1029/2011JD017158

    • Peer Reviewed
  • [Journal Article] Decadal changes in aerosol optical thickness and single scattering albedo estimated from ground-based broadband radiometers : a case study in Japan2011

    • Author(s)
      Kudo, R., A. Uchiyama, A. Yamazaki, T. Sakami, and O. Ijima
    • Journal Title

      J. Geophys. Res

      Volume: 116 Pages: D03207

    • DOI

      doi:10.1029/2010JD014911

    • Peer Reviewed
  • [Journal Article] Studies on long-term variations in aerosol optical properties and direct effect by ground-based radiometers2011

    • Author(s)
      Kudo, R.
    • Journal Title

      Doctor Thesis, Hokkaido University

    • Peer Reviewed
  • [Journal Article] Measurements of aerosol optical properties incentral Tokyo during summertime using cavity ring-down spectroscopy : Comparison with conventional techniques2010

    • Author(s)
      Nakayama, T., R. Hagino, Y. Matsumi, Y. Sakamito, M. Kawasaki, A. Yamazaki, A. Uchiyama, R. Kudo, N. Moteki, Y. Kondo, K. Tonokura
    • Journal Title

      Atmos. Environ

      Volume: 44 Pages: 3034-3042

    • DOI

      doi:10.1016/j.atmosenv.2010.05.008

    • Peer Reviewed
  • [Journal Article] Retrieval of aerosol optical properties based on the spheroid model2010

    • Author(s)
      Kobayashi, E., A. Uchiyama, A. Yamazaki, R. Kudo
    • Journal Title

      J. Meteorol. Soc. Jpn

      Volume: 88 Pages: 847-856

    • DOI

      doi:10.2151/jmsj.2010-505

    • Peer Reviewed
  • [Presentation] Direct effect of aerosol optical properties on global dimming and brightening2011

    • Author(s)
      R. Kudo, and A. Uchiyama
    • Organizer
      AGU fall meeting 2011
    • Place of Presentation
      San Francisco, California, USA
    • Year and Date
      2011-12-10
  • [Presentation] 光吸収性エアロゾルの大気境界層への影響2011

    • Author(s)
      工藤玲,青柳曉典,西澤智明
    • Organizer
      日本気象学会2011年度秋季大会
    • Place of Presentation
      名古屋大学
    • Year and Date
      2011-11-18
  • [Presentation] 日本のエアロゾル光学特性の長期変動と地上日射への影響2011

    • Author(s)
      工藤玲,内山明博,山崎明宏,坂見智法
    • Organizer
      日本気象学会2011年度春季大会
    • Place of Presentation
      国立オリンピック記念青少年総合センター
    • Year and Date
      2011-05-20
  • [Presentation] つくばにおけるエアロゾル光学特性の長期変動と地上日射への影響2010

    • Author(s)
      工藤玲,内山明博,山崎明宏,坂見智法
    • Organizer
      日本気象学会2010年度秋季大会
    • Place of Presentation
      京都テルサ
    • Year and Date
      2010-10-29
  • [Presentation] Impacts of aerosol optical thickness and single scattering albedo on the dimming and brightening in Japan2010

    • Author(s)
      Kudo, R., A. Uchiyama, A. Yamazaki, T. Sakami
    • Organizer
      The 16th CEReS International Symposium on Climate Change Studies through activities of SKYNET and Virtual Laboratory for Climate Diagnostics
    • Place of Presentation
      ホテルゆがふいんおきなわ
    • Year and Date
      2010-10-22
  • [Presentation] Influences of aerosol optical thickness and single scattering albedo on global dimming and brightening2010

    • Author(s)
      Kudo, R., A. Uchiyama, A. Yamazaki, T. Sakami
    • Organizer
      The 3rd Asia Pacific Radiation Symposium
    • Place of Presentation
      Yonsei University, Seoul, Korea
    • Year and Date
      2010-08-27

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Published: 2013-07-31  

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