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Development of a method for measuring complex refractive index of black carbon aerosols

Research Project

Project/Area Number 15H05465
Research Category

Grant-in-Aid for Young Scientists (A)

Allocation TypeSingle-year Grants
Research Field Meteorology/Physical oceanography/Hydrology
Research InstitutionThe University of Tokyo

Principal Investigator

Moteki Nobuhiro  東京大学, 大学院理学系研究科(理学部), 助教 (20507818)

Project Period (FY) 2015-04-01 – 2018-03-31
Project Status Completed (Fiscal Year 2017)
Budget Amount *help
¥21,580,000 (Direct Cost: ¥16,600,000、Indirect Cost: ¥4,980,000)
Fiscal Year 2017: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2016: ¥14,950,000 (Direct Cost: ¥11,500,000、Indirect Cost: ¥3,450,000)
Fiscal Year 2015: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Keywords大気化学 / 放射強制力 / エアロゾル / 地球温暖化 / 大気放射 / 大気環境 / 気候変動 / 大気物理学 / 光散乱
Outline of Final Research Achievements

In the initial schedule, we plan to simultaneously measure the scattering and absorption cross sections of black carbon particles using the single-particle light scattering method and the single-particle laser incandescence method to derive the complex refractive index of black carbon aerosols. In the course of preliminary experiments, we discovered that anthropogenic iron oxide particles generated from automobiles and steel works can be detected separately from black carbon and iron oxide particles of natural origin, and established a method. Using global observation data and numerical simulation of anthropogenic iron oxide aerosols, we evaluated global concentration and radiative forcing for the first time. In addition, a single particle dissipation method, which is a highly sensitive measurement principle for the imaginary part of the complex refractive index, was devised anew and a theoretical model and experimental system of the measurement were completed.

Report

(4 results)
  • 2017 Annual Research Report   Final Research Report ( PDF )
  • 2016 Annual Research Report
  • 2015 Annual Research Report
  • Research Products

    (22 results)

All 2018 2017 2016 2015 Other

All Int'l Joint Research (6 results) Journal Article (8 results) (of which Int'l Joint Research: 5 results,  Peer Reviewed: 8 results,  Open Access: 5 results,  Acknowledgement Compliant: 3 results) Presentation (6 results) (of which Int'l Joint Research: 3 results) Remarks (2 results)

  • [Int'l Joint Research] Cornell University/Pacific Northwest National Laboratory/University of Michigan(米国)

    • Related Report
      2017 Annual Research Report
  • [Int'l Joint Research] NOAA/CIRES(米国)

    • Related Report
      2016 Annual Research Report
  • [Int'l Joint Research] Cambustion Ltd/University of Manchester(英国)

    • Related Report
      2016 Annual Research Report
  • [Int'l Joint Research] Tata Institute of Fundamental Research(India)

    • Related Report
      2016 Annual Research Report
  • [Int'l Joint Research] Stockholm University(Sweden)

    • Related Report
      2016 Annual Research Report
  • [Int'l Joint Research] Agricultural University of Iceland(アイスランド)

    • Related Report
      2015 Annual Research Report
  • [Journal Article] New particle formation leads to cloud dimming2018

    • Author(s)
      Sullivan R. C., P. Crippa, H. Matsui, L. R. Leung, C. Zhao, A. Thota, and S. C. Pryor
    • Journal Title

      Nature Partner Journals: Climate and Atmospheric Science

      Volume: 印刷中 Issue: 1 Pages: 1593-1593

    • DOI

      10.1038/s41467-018-03997-0

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Anthropogenic iron oxide aerosols enhance atmospheric heating2017

    • Author(s)
      Moteki Nobuhiro、Adachi Kouji、Ohata Sho、Yoshida Atsushi、Harigaya Tomoo、Koike Makoto、Kondo Yutaka
    • Journal Title

      Nature Communications

      Volume: 8 Issue: 1 Pages: 15329-15329

    • DOI

      10.1038/ncomms15329

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Evaluation of ground-based black carbon measurements by filter-based photometers at two Arctic sites2017

    • Author(s)
      Sinha P. R.、Kondo Y.、Koike M.、Ogren J. A.、Jefferson A.、Barrett T. E.、Sheesley R. J.、Ohata S.、Moteki N.、Coe H.、Liu D.、Irwin M.、Tunved P.、Quinn P. K.、Zhao Y.
    • Journal Title

      Journal of Geophysical Research: Atmospheres

      Volume: 122 Issue: 6 Pages: 3544-3572

    • DOI

      10.1002/2016jd025843

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Mixing states of light-absorbing particles measured using a transmission electron microscope and a single-particle soot photometer in Tokyo, Japan2016

    • Author(s)
      K. Adachi, N. Moteki, Y. Kondo, Y. Igarashi
    • Journal Title

      Journal of Geophysical Research: Atmospheres

      Volume: 121 Issue: 15 Pages: 9153-9164

    • DOI

      10.1002/2016jd025153

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Effects of wet deposition on the abundance and size distribution of black carbon in East Asia2016

    • Author(s)
      Kondo, Y., N. Moteki, N. Oshima, S. Ohata, M. Koike, Y. Shibano, N. Takegawa, and K. Kita
    • Journal Title

      J. Geophys. Res. Atmos.

      Volume: 121 Issue: 9 Pages: 4691-4712

    • DOI

      10.1002/2015jd024479

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] A key process controlling the wet removal of aerosols: new observational evidence2016

    • Author(s)
      Ohata, S., N. Moteki, T. Mori, M. Koike, and Y. Kondo
    • Journal Title

      Scientific Reports

      Volume: 6 Issue: 1 Pages: 34113-34113

    • DOI

      10.1038/srep34113

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Discrete dipole approximation for black carbon-containing aerosols in arbitrary mixing state: A hybrid discretization scheme2016

    • Author(s)
      N. Moteki
    • Journal Title

      Journal of Quantitative Spectroscopy & Radiative Transfer

      Volume: 印刷中 Pages: 306-314

    • DOI

      10.1016/j.jqsrt.2016.01.025

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Detection of light-absorbing iron oxide particles using a modified single-particle soot photometer2016

    • Author(s)
      Yoshida, A., N. Moteki, S. Ohata, T. Mori, R. Tada, P. Dagsson-Waldhauserová, and Y. Kondo
    • Journal Title

      Aerosol Science and Technology (Aerosol Research Letter)

      Volume: 50 Issue: 3 Pages: 1-4

    • DOI

      10.1080/02786826.2016.1146402

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Presentation] Single-particle measurements of light-absorbing iron oxide aerosols and their radiative effects2017

    • Author(s)
      Yoshida Atsushi、Moteki Nobuhiro、Ohata Sho、Adachi Kouji、Mori Tatsuhiro、Koike Makoto、Takami Akinori
    • Organizer
      Japan Geoscience Union Meeting
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] EVALUATION OF THE BLACK CARBON MEASUREMENTS IN THE ARCTIC2016

    • Author(s)
      Kondo Y.、Sinha P. R.、Koike M.、Ogren J. A.、Jefferson A.、Barrett T. E.、Sheesley R. J.、Ohata S.、Moteki N.、Coe H.、Liu D.、Irwin M.、Tunved P.、Quinn P. K.、Zhao Y.
    • Organizer
      AGU fall meeting 2016
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 任意の形状・混合状態の微粒子の光散乱計算とその応用2015

    • Author(s)
      茂木信宏
    • Organizer
      大気化学討論会2015
    • Place of Presentation
      東京工業大学大岡山キャンパス(東京都目黒区)
    • Year and Date
      2015-10-21
    • Related Report
      2015 Annual Research Report
  • [Presentation] Improved volume integral equation method for computing optical properties of black carbon-containing aerosol particles2015

    • Author(s)
      N. Moteki
    • Organizer
      Electromagnetic & Light Scattering XV 2015
    • Place of Presentation
      Leipzig, Germany
    • Year and Date
      2015-06-22
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 不純物粒子を含む水雲の光学特性の高精度・高速な近似計算法2015

    • Author(s)
      茂木信宏, 青木大佳
    • Organizer
      日本気象学会春季大会 2015年度
    • Place of Presentation
      つくば国際会議場 (茨城県つくば市)
    • Year and Date
      2015-05-24
    • Related Report
      2015 Annual Research Report
  • [Presentation] ブラックカーボン含有粒子の光学特性の高精度計算法2015

    • Author(s)
      茂木信宏
    • Organizer
      日本気象学会春季大会 2015年度
    • Place of Presentation
      つくば国際会議場 (茨城県つくば市)
    • Year and Date
      2015-05-23
    • Related Report
      2015 Annual Research Report
  • [Remarks] 個人ウェブページ

    • URL

      http://www-sys.eps.s.u-tokyo.ac.jp/~moteki/

    • Related Report
      2017 Annual Research Report 2016 Annual Research Report
  • [Remarks] 研究代表者の個人ホームページ

    • URL

      http://www-sys.eps.s.u-tokyo.ac.jp/~moteki/

    • Related Report
      2015 Annual Research Report

URL: 

Published: 2015-04-16   Modified: 2022-10-14  

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