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Atmospheric processes over the Tibetan plateau : atmospheric particle surface reaction destroying ozone

Research Project

Project/Area Number 10041115
Research Category

Grant-in-Aid for Scientific Research (A).

Allocation TypeSingle-year Grants
Section一般
Research Field Environmental dynamic analysis
Research InstitutionNagoya University

Principal Investigator

IWASAKA Yasunobu  Nagoya University, Solar-Terr. Envir. Lab., Prof., 太陽地球環境研究所, 教授 (20022709)

Co-Investigator(Kenkyū-buntansha) OSADA Kazuo  Nagoya Univ., STE Lab., Res. Associate, 太陽地球環境研究所, 助手 (80252295)
MATSUNAGA Katsuji  Nagoya Univ., STE Lab., Assoc. Prof., 太陽地球環境研究所, 助教授 (60022729)
SHIBATA Takashi  Nagoya Univ., STE Lab., Assoc. Prof., 太陽地球環境研究所, 助教授 (70167443)
ICHIHASHI Masamitsu  Kobe Univ., School of Medicine, Prof., 医学部, 教授 (00030867)
張 代州  熊本県立大学, 環境共生学部, 講師
ZHANG Daizhou  Kumamoto P. Univ., Fac. Envir. Symbiot. Sci., Lect.
張 代洲  熊本県立大学, 環境共生学部, 講師
〓 知本  中国科学院, 安微光学機械精密研究所, 教授
石 広玉  中国科学院, 大気物理研究所, 教授
Project Period (FY) 1998 – 1999
Project Status Completed (Fiscal Year 1999)
Budget Amount *help
¥12,400,000 (Direct Cost: ¥12,400,000)
Fiscal Year 1999: ¥6,500,000 (Direct Cost: ¥6,500,000)
Fiscal Year 1998: ¥5,900,000 (Direct Cost: ¥5,900,000)
KeywordsTibetan plateau atmosphere / Tibetan ozone valley / Stratospheric aerosol at Tibet / Aerosols near the tropopause
Research Abstract

The Tibetan Plateau is very interesting area from the standing view of atmospheric chemistry and aerosol science since this area frequently produces large strong upwelling motion in summer season and affect climate and atmospheric environment in asia-pacific region. We conduct following observations at the campus of Tibet Meteorological Bureau and other observational sites during the period of observational campaign :
1. Tropospheric stratospheric ozone concentration with an ozone sonde
2. Tropospheric and stratospheric aerosol concentration and shapes with a lidar
3. Tropospheric and stratospheric aerosol concentration and size with an aerosol sonde
4. Observation of shape of tropospheric aerosol, surface structure of tropospheric aerosols, chemical element of tropospheric aerosols, chemical composition of materials on the particles with an electron microscope and a microscopic FTIR
Those observations firstly revealed temporal spatial changes in tropospheric and stratospheric ozone and aerosol distribution over the Tibetan area. It is worth to note on the basis of those observations that enhanced aerosol layer appeared near the local tropopause where aerosol concentration was low at other observational sites. One possible explanation is that the aerosol layer is due to active upwelling motion of the air containing lots of water vapor since air with high water vapor concentration is frequently transported from the Indian ocean to the southern asian continent during asian monsoon periods.
The preliminary report of the measurements was presented in First Asian Aerosol Conference, July 1999, Nagoya, Japan.
Detailed analysis of the observational results has been made combining meteorological data, satellite data, and so on. The present results showing the tropopause aerosols are to be very valuable for studies of atmospheric chemical effects of the particulate matter.

Report

(3 results)
  • 1999 Annual Research Report   Final Research Report Summary
  • 1998 Annual Research Report
  • Research Products

    (27 results)

All Other

All Publications (27 results)

  • [Publications] Y. Iwasakaほか7名: "Concentraiton of aerosol particles in the asian continental atmosphere"J. Aerosol Science. 29・1. 507-508 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Y. Iwasakaほか7名: "Atmospheric particles in Asian-Pacific region : Ballon, aircraft"Global Environmental Research. 2・1. 47-55 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] M. Nishikawaほか7名: "Characterization of carboneceous aerosols in China"J. Aerosol Science. 29・1. 233-234 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] D. Zhang and Y. Iwasakaほか7名: "Nitrate and sulfate in individual asian dust particles"Atmospheric Environment. 33・9. 3214-3224 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] T. Sakaiほか7名: "Free tropospheric aerosol backscatter, depolartization ratio and relative humidity measured Raman lidar at Nagoya in 1994-1997"Atmospheric Environment. 34・3. 431-442 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Y. Iwasakaほか7名: "Spring maximum in aerosol concentration near the tropopause"J. Aerosol Science. 30・1. 213-214 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] 岩坂泰信 ほか6名: "岩波講座 地球環境学 3 大気環境の変動"岩波書店. 328 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Y. Iwasaka, Y. Okuhara, M. Watanabe, K. Hara, M. Hayashi, G. Shi, Z. Gong, and J. Zhou: "Concentration of aerosol particles in the asian continental atmosphere"J. Aerosol Sci.. 29-1. 507-508 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Y. Iwasaka, M. Hayashi, I. Mori, S.-A. Kwon, K. Matsunaga, G. Shi, J. Zhou, T. Shibata, M. Nishikawa, Y. Okuhara, K. Hara, N. Nagatani, M. Watanabe, Y. -S. Kim and Z. Gong: "Atmospheric particles in Asian-Pacific region : Balloon, Aircraft, and Lidar measurements"Global Environm. Res.. 2-1. 47-55 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] M. Nishikawa, I. Mori, Y. Iwasaka, H. Quan, Y. Huang and J. Ren: "Characterization of carbonecenous aerosols in China"J. Aerosol Sci.. 29-1. 233-234 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] D. Zhang and Y. Iwasaka: "Nitrate and sulfate in individual asian dust particles"Atmospheric Environm.. 33-9. 3214-3224 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] T. Sakai, T. Shibata, S. A. Kwon, Y. S. Kim, K. Tamura, and Y. Iwasaka: "Free tropospheric aerosol backscatter, depolarization ratio and relative humidity measured with the Raman lidar at Nagoya in 1994-1997"Atmospheric Environm.. 34-3. 431-442 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Y. Iwasaka, Y. -S. Kim, M. Nagatani, H. Nakada, T. Shibata, and K. Miyagawa: "Spring maximum in aerosol concentration near the tropopause over Japan : Lidar measurements in 1991-1998"J. Aerosol Sci.. 30-1. 213-214 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Y. Iwasaka, T. Yasunari, T. Nakazawa, H. Hara, M. Sumi, T. Morita, and S. Yonemoto: "IWANAMIKOZA TIKYUKANKYOGAKU 3 TAIKIKANKYO NO HENDO"Iwanami Shoten. 328 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Y.Iwasaka ほか7名: "Concentration of aerosol particles in the Asian continental atmosphere"J.Aerosol Science. 29・1. 507-508 (1998)

    • Related Report
      1999 Annual Research Report
  • [Publications] Y.Iwasaka ほか14名: "Atmospheric particles in Asian-Pacific region: Balloon, aircraft, and lidar measurement"Global Environment Research. 2・1. 47-55 (1998)

    • Related Report
      1999 Annual Research Report
  • [Publications] M.Nishikawa ほか5名: "Characterization of carbonaceous aerosols in China"J.Aerosol Science. 29・1. 233-234 (1998)

    • Related Report
      1999 Annual Research Report
  • [Publications] D.Zhang and Y.Iwasaka: "Nitrate and sulfate in individual Asian dust particles"Atmospheric Environment. 33・9. 3214-3224 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] T.Sakai ほか5名: "Free tropospheric aerosol backscatter, depolarization ratio and relative humidity measured with the Raman lidar at Nagoya in 1994-1997"Atomospheric Environment. 34・3. 431-432 (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] Y.Iwasaka ほか5名: "Spring maximum in aerosol concentration near the tropopause"J.Aerosol Science. 30・1. 213-214 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 岩坂泰信ほか6名: "岩波講座 地球環境学 3 大気環境の変動"岩波書店. 328 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Y.Iwasakaほか7名: "Atmospheric particles in Asia-Pacific region" Global Environmental Research. 2・1. 47-55 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] I.Moriほか4名: "Chemical characteristics of free troposheric aerosols" Atmospheric Environment. 33・5. 601-609 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] I.Moriほか2名: "Chemical reaction during the coagulation of ammonium sulfate" The Science of Total Environment. 224・1. 87-91 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Y.Iwasakaほか7名: "Concentration of aerosol particles in the Asian continental" J.Aerosol Science. 29・s1. s507-s508 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] D.Zhang and Y.Iwasaka: "Morphology and chemical composition of individual dust particles" J.Aerosol Science. 29・s1. s217-s218 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] M.Nishikawaほか5名: "Characterization of carbonecious aerosols in china" J.Aerosol Science. 29・s1. S233-s234 (1998)

    • Related Report
      1998 Annual Research Report

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Published: 1998-04-01   Modified: 2016-04-21  

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