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Development of ballon-borne laser scattering micro-particle counting System

Research Project

Project/Area Number 08554013
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section展開研究
Research Field Meteorology/Physical oceanography/Hydrology
Research InstitutionNAGOYA UNIVERSITY

Principal Investigator

SHIBATA Takasi  Solar-terrestrial Environment Laboratory, Nagoya University, Assoc, Pro, 太陽地球環境研究所, 助教授 (70167443)

Co-Investigator(Kenkyū-buntansha) TUTIYA Masayosi  Nagoya University, Sigmatech, Co, Res and dev, 研究開発担当
IWASAKA Yasunobu  Solar-terrestrial Environment Laboratory, Nagoya University, Pro, 太陽地球環境研究所, 教授 (20022709)
Project Period (FY) 1996 – 1997
Project Status Completed (Fiscal Year 1997)
Budget Amount *help
¥9,200,000 (Direct Cost: ¥9,200,000)
Fiscal Year 1997: ¥1,800,000 (Direct Cost: ¥1,800,000)
Fiscal Year 1996: ¥7,400,000 (Direct Cost: ¥7,400,000)
Keywordsparticle, counter / stratosphere, aerosol / Mie, scattering / Rayleigh, scattering / 微粒子カウンター、 / 成層圏エアロゾル、 / ミ-散乱、
Research Abstract

A laser type aerosol sonde was developed to be mounted on an observation balloon to measure the airborne particle size to 0.1 to 5 mum for polystirene latex spheres (PSL) and enable it to endure atmospheric pressure variation from 1013 hPa (at the ground surface) to 10 hPa (at an altiude of 30 to 35 km), design and experimental investigations regarding the signal-to-noise (S/N) ratio, laser power variation, and sampling flow rate variation were carried out. As a results, an external mirror type He-Ne laser was chosen. Its configuration is characterized by a reinforced laser tube being hermetically sealed at normal atmospheric pressure and having a control system for the supply current. This made the laser power fluctuation a mere 0.7% against the above-stated atmospheric pressure variation. A gear pump was specially chosen as an aerosol suction pump to effect a constant sampling flow rate ratio under the ambient atmospheric pressure variation, and the ratio was hold to 0.5% by speed control of the pumpmotor. A special nebulizer for use in a vacuum was developed to experimentally ascertain the response curve of the aerosol sonde over the full range of normal atmospheric pressure dowm to 10 hPa. The response curve together with the S/N ratio was evaluated by both the peak channel and the standard deviation channel of the pulse height analyzer (PHA) histogram. Using this nebulizer, it was ascertained that both channel values were kept nearly constant against the atmospheric pressure variation and that the response curve well satisfied the Mie scattering equation. It was also demonstrated that 0.109 mum PSL particles could be detected with a relative standard deviation value in a PHA histogram of 42% and an S/N ratio of 2.5-3.

Report

(3 results)
  • 1997 Annual Research Report   Final Research Report Summary
  • 1996 Annual Research Report
  • Research Products

    (12 results)

All Other

All Publications (12 results)

  • [Publications] 渡辺 征春 他: "Distribution of particulate sulfur in the winter Arctic stratospere : Balloon-borne" Proceeding of the National Institute of Polar Research. Symposium on Polar Materology and Glaciology.No11. 138-149 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] 土屋 政義 他: "Aerosol sonde for observation balloon." Rev.Phys.instrument.(印刷中). (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Watanabe, M., Y.Iwasaka, M.Hayashi, M.Nagatani, H.Nakada, H.Adachi, M.Fujiwara, H.Gernandt and R.Neuber.: "Distribution of particulate sulfur in the winter Arctic stratosphere : Ballon-borne measurements of particle number concentration" Proceeding of the National Institute of Polar Research, Symposium on Polar Meteorology and Glaciology. No11. 138-149 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Tsuchiya, M., K.Takami, M.Hayashi and Y.Iwasaka: "Aerosol sonde for observation balloon" Rev.Phys.Instrument. (in press). (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] 渡辺征春 他: "Distribution of particulate sulfur in the winter Arctic stratosphere:Balloon-borne" Procceding of the Nitional Institute of Polar Research,Svmposium on Polar Meteorology and Glaciology,. Noll,. 138-149 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 土屋政義 他: "Aerosol sonde for observation balloon," Rev.Phys.Instrument,. (印刷中). (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] T.Shibata et al.: "The appearance of polar stratospheric cloouds over Spitsbergen in winter 1994/1995 observed by a lidar" Proc.NIPR Symp.No.51(印刷中). (1997)

    • Related Report
      1996 Annual Research Report
  • [Publications] T.Shibata et al.: "Raman Lidar Observations : Simultaneous Measurements of Water Vapor,Temperature and Aerosol Vertical Profiles,Part I" J.Geomag.Geoelectr.VoL,48. 1127-1135 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] T.Shibata et al.: "Raman Lidar Observations : Simultaneous Measurements of Water Vapor,Temperature and Aerosol Vertical Profiles,Part II" J.Geomag.Geoelectr.VoL,48. 1137-1144 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] T.Shibata et al.: "Liquid Particles and Vertical Sandwich Structure of Polar Stratospheric Clouds Observed by a Lidar over Spitsbergen in the Winter 1994/1995" J.Geophys.Res.VoL,102(印刷中). (1997)

    • Related Report
      1996 Annual Research Report
  • [Publications] Y.Iwasaka et al.: "Size distribution of aerosol particles in the free troposphere : Aircraft measurements in the spring of 1991-1994 over Japan" Terr.Atmos.Ocean.Sci.(印刷中). (1997)

    • Related Report
      1996 Annual Research Report
  • [Publications] Y.Iwasaka et al.: "Stratospheric ozone and aerosol measurements in winter 1993/1994 over mid-Japan" J.Met.Soc.Jpn.14・3(印刷中). (1997)

    • Related Report
      1996 Annual Research Report

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Published: 1996-04-01   Modified: 2016-04-21  

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