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Characteristics of transport/transformation/deposition of air pollutants and the material balance in Nohbi plain and Ise bay area, Japan, a semi-closed airshed

Research Project

Project/Area Number 06680490
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field Environmental dynamic analysis
Research InstitutionToyohashi University of Technology

Principal Investigator

KITADA Toshihiro  Toyohashi Univ. Technology, Ecological Eng., Professor, 工学部, 教授 (40093231)

Project Period (FY) 1994 – 1995
Project Status Completed (Fiscal Year 1995)
Budget Amount *help
¥1,900,000 (Direct Cost: ¥1,900,000)
Fiscal Year 1995: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 1994: ¥1,100,000 (Direct Cost: ¥1,100,000)
Keywordsari pollution in autumn / photochemical smog / local wind / numerical simulation / air craft observation / volatile organic hydrocarbon / mitrogen dioxide / oxidant / 海陸風 / 大気汚染輸送 / 濃尾平野
Research Abstract

It is widely known that during late autumn to early winter concerntration of nitrogen dioxide becomes very high over Kanto, Nohbi Plains etc., and thus atmospheric environment tends to be worse. This may be partly due to the characteristic meteorological condition in this season, when just before the beginning of winter monsoon synoptic scale wind is generally weak under periodically-passing high pressure systems, and in addition lacal wind such as sea breeze never develops strong because of adverse thermal condition during daytime, i. e. temperatures over land surface exceed those over sea by only 1 to 2 deg for only 2 hours a day. In this study to elucidate characteristics of air pollution transport we have performed 3D simulation for the transport/chemistry/deposition of air pollutants over Nohbi plain and Ise bay area. The simulated days were 24 and 25 November, 1992, when extensive field observations using air plane, rawin-sondes, Doppler-sodar, and many ground-based monitoring st … More ations were conducted.
Obtained results are as follows :
(1)Emission source inventories were investigated for Nohbi plain. Non-methane VOCs (Volatile Organic hydroCarbons) emission distributions were estimated on the basis of emission strength per unit production, fuel consumption, etc. and spatial distributions of industrial production, number of cars etc. Furthermore, these emission sources were tested and corrected by using 1D diffusion/chemistry model so that calculated vertical profiles of VOCs concentrations agree with those observed. Using this procedure, emissions of aromatic hydrocarbons such as toluene and xylene were reevaluated and cut to one-ninth of the initial estimation.
(2)With these emission enventories, two days 3D transport/chemistry/deposition simulation was performed for most of important chemical species which include NO,NO_2, HNO_3, SO_2, SO_4^=, O_3, H_2O_2, VOCs etc. The simulation resultsshowed : (i) good agreement between calculated and observed NO_2 concentrations at surface level, (ii) important features of observed concentration distributions at 300 and 600 m high were well reproduced by the simulation, i. e. high concentration zones appear over Chita peninsula and Mikawa bay area during daytime, indicating strong mixing activity over Nohbi plain which is in upstream area of Chita and Mikawa.
(3)Detailed analysis of the obtained results is left for investigation of effecte emission control in this region. Less

Report

(3 results)
  • 1995 Annual Research Report   Final Research Report Summary
  • 1994 Annual Research Report
  • Research Products

    (25 results)

All Other

All Publications (25 results)

  • [Publications] 北田敏廣: "k-εi/xyスケール気象モデルによる濃尾平野の局地風解析 -様々なスケールの地形効果-" 環境工学研究論文集(土木学会). 32. 241-252 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 北田敏廣: "海風時に沿岸部の小丘により生成された乱流運動エネルギーの輸送特性とその下流部への影響-2次元k-ε乱流モデルによる解析-" 天気(日本気象学会). 43(印刷中). (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 北田敏廣: "秋季の高気圧支配下における伊勢湾域の局地風と物質輸送" 第31回環境工学研究フォーラム講演集. 76-78 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 北田敏廣: "ドップラーソーダによる大気境界層下部の乱れの鉛直分布とそのk-ε乱流モデルによる解析" 天気(日本気象学会). 41. 827-846 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 北田敏廣: "濃尾平野における海陸風の特徴と広域海風の出現条件" 天気(日本気象学会). 41. 379-385 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 北田敏廣: "大気循環に配慮した都市計画" 都市計画(日本都市計画学会). 43. 15-24 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 北田敏廣(分担執筆): "五全総に向けて 21世紀の中部圏" 中日新聞本社, 519 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Takagi, H.and Kitada, T.: "Transport of turbulent kinetic energy generated in a sea breeze over small hills : A numerical simulation with a k-epsilon turbulence mode." Tenki, Meteorol. Soc. Japan, (in Japanese). Vol.43 (in press). (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Kitada, T., Okamura, K., and Takagi, H.: "Numerical analysis of characteristic local winds in Nohbi plain, Japan, using a meso-scale meteorological model with k-epsilon turbulence model : Topography effects in various spatial scales Proc. of Environmental Engineering Research" JSCE (in Japanese). Vol.32. 241-252 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Takagi, H.and Kitada, T.: "Vertical profiles of turbulent kinetic energy observed with doppler sodar and their analysis suing k-epsilon turbulence model" Tenki, MSJ (in Japanese). Vol.41. 827-846 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Kitada, T.: "Urban and regional planning considering characteristic air flow system in regional scale." City Planning Review (in Japanese). Vol.43, No.3. 15-24 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Mori, H., Ogawa, H., and Kitada, T.: "Characteristics of land and sea breezes in the Nohbi plain, and the conditions of occurrence of the "extended sea breeze"" Tenki, MSJ (in Japanese). Vol.41. 379-385

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Okayama, A., Kitada, T., and Ishikawa, S.: "Local winds and air pollution transport over Ise bay area under high pressure system in autumn. Preprints Volume, 31st Research Forum for Environmental Engineering (KankyouKougaku Kenkyuu Forum Koenshuu)" JSCE (in Japanese). 76-78 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 北田敏廣: "k-ε,/メソスケール気象モデルによる濃尾平野の局地風解析-様々なスケールの地形効果-" 環境工学研究論文集(土木学会). 32. 241-252 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 北田敏廣: "海風時に沿岸部の小丘により生成された乱流運動エネルギーの輸送特性とその下流部への影響-2次元k-ε乱流モデルによる解析-" 天気(日本気象学会). 43(印刷中). (1996)

    • Related Report
      1995 Annual Research Report
  • [Publications] 北田敏廣: "秋季の高気圧支配下における伊勢湾域の局地風と物質輸送" 第31回環境工学研究フォーラム講演集. 76-78 (1994)

    • Related Report
      1995 Annual Research Report
  • [Publications] 北田敏廣: "ドップラーソーダによる大気境界層下部の乱れの鉛直分布とそのk-ε乱流モデルによる解析" 天気(日本気象学会). 41. 827-846 (1994)

    • Related Report
      1995 Annual Research Report
  • [Publications] 北田敏廣: "濃尾平野における海陸風の特徴と広域海風の出現条件" 天気(日本気象学会). 41. 379-385 (1994)

    • Related Report
      1995 Annual Research Report
  • [Publications] 北田敏廣: "大気循環に配慮した都市計画" 都市計画(日本都市計画学会). 43. 15-24 (1994)

    • Related Report
      1995 Annual Research Report
  • [Publications] 北田敏廣(分担執筆): "五全総に向けて21世紀の中部圏" 中日新聞本社, 519 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 北田敏廣: "大気循環に配慮した都市計画" 都市計画(日本都市計画学会). 43. 15-24 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 北田敏廣: "濃尾平野における海陸風の特徴と広域海風の出現条件" 天気(日本気象学会). 41. 379-385 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 北田敏廣: "ドップラーソーダによる大気境界層下部の乱れの鉛直分布とそのk-ε乱流モデルによる解析" 天気(日本気象学会). 41. 827-846 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 北田敏廣: "秋季の高気圧支配下における伊勢湾域の局地風と物質輸送" 環境工学研究フォーラム(土木学会環境工学委員会). 31. 76-78 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 北田敏廣: "k-ε/メソスケール気象モデルによる濃尾平野の局地風解析-様々なスケールの地形効果-" 環境工学研究フォーラム(土木学会環境工学委員会). 31. 79-81 (1994)

    • Related Report
      1994 Annual Research Report

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Published: 1994-04-01   Modified: 2016-04-21  

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