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Study on the behavior of atmospheric radon for clarifying the dispersion of atmospheric pollutants from East Asia region to northwest Pacific Ocean

Research Project

Project/Area Number 13480165
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field 環境影響評価(含放射線生物学)
Research InstitutionNagoya University

Principal Investigator

IIDA Takao  Nagoya University, Graduate School of Engineering, Professor, 大学院・工学研究科, 教授 (50089843)

Co-Investigator(Kenkyū-buntansha) KOMURA Kazuhisa  Kanazawa University, Faculty of Science, Professor, 理学部, 教授 (00110601)
MORIIZUMI Jun  Nagoya University, Graduate School of Engineering, Assistant Professor, 大学院・工学研究科, 助手 (90303677)
YAMAZAWA Hiromi  Nagoya University, Graduate School of Engineering, Associate Professor, 大学院・工学研究科, 助教授 (70345916)
YOSHIOKA Katsuhiro  Shimane-Prefectural Institute of Environmental Science, Chief Scientist, 主任研究委員
Project Period (FY) 2001 – 2003
Project Status Completed (Fiscal Year 2003)
Budget Amount *help
¥7,400,000 (Direct Cost: ¥7,400,000)
Fiscal Year 2003: ¥1,600,000 (Direct Cost: ¥1,600,000)
Fiscal Year 2002: ¥2,000,000 (Direct Cost: ¥2,000,000)
Fiscal Year 2001: ¥3,800,000 (Direct Cost: ¥3,800,000)
Keywordsradon / atmospheric radon / atmospheric pollutants / long-range transport / East Asia region / tracer / simulation / back traiectory analysis / エアロゾル / 気象解析
Research Abstract

The study on the diffusion of atmospheric pollutants from East Asia region to northwest Pacific Ocean and the dispersion over a wide area associated with nuclear accident is an important and urgent environmental problem in East Asia. Radon is a good tracer for atmospheric pollutants. A network of atmospheric radon monitoring stations was constructed at Beijing in China, at Seoul and Tonghae in Korea, at Oki and Hekura islands on the Sea of Japan at Matsue, Kanazawa and Nagoya in Japan and at Hateruma, Hachijojima and Ogasawara islands on the Pacific. The atmospheric radon concentration decreases gradually from China to Japan and on the Pacific. The radon concentrations at Nagoya and Beijing showed clear diurnal variations. On the other hand, the radon concentrations at solitary islands on the sea did not show diurnal variations. The atmospheric radon concentrations at Hachijojima island agreed well with the trend and peak of time variations of the concentrations of elemental carbon and ozone. The long-range atmospheric transport model was developed and evaluated by using atmospheric radon concentrations observed in East Asia region. The developed model consists of a meteorological model (MM5) and an atmospheric transport model. The MM5 could predict the three-dimensional distributions of turbulent diffusivity, winds and precipitation fields. The simulated time variations of atmospheric radon concentration agreed well with the observed variations.

Report

(4 results)
  • 2003 Annual Research Report   Final Research Report Summary
  • 2002 Annual Research Report
  • 2001 Annual Research Report
  • Research Products

    (26 results)

All Other

All Publications (26 results)

  • [Publications] 飯田孝夫, 山澤弘実: "大気中ラドン濃度の連続観測に基づく地球規模汚染物質の環境動態の考察"応用物理. 72(4). 422-426 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] T.Ueno, S.Nagao, H.Yamazawa: "Atmospheric Deposition of ^7Be, ^<40>K, ^<137>Cs and ^<210>Pb during 1993-2001 at Tokai-mura"Japan Journal of Radioanalytical and Nucl.Chemistry. 255(2). 335-339 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] K.Matsumoto, M.Uematsu, T.Hayano, K.Yoshioka, H.Tanimoto, T.Iida: "Simultaneous Measurements of Particulate Elemental Carbon on the Ground Observation Network over the Western North Pacific during the ACE-Asia Campaign"Journal of Geophysical Research. 108(D23). 8635-8641 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] S.Yamamoto, Y.Yoshida, T.Iida: "Development of an Underground Radon Detector Using an Optical Fiber"IEEE Transactions on Nuclear Science. 50(4). 987-990 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] 吉岡勝廣: "日本海および太平洋の海上境界層内ラドン濃度の季節変化"海洋. 36(2). 102-106 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] K.SUN, Q.GUO, W.ZHUO: "Feasibility for Mapping Radon Exhalation from Soil in China"J.Nucl.Sci.Technol.. 41(1). 86-90 (2004)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] T.Iida, H.Yamazawa: "A Study on the Environmental Behavior of Global Air Pollutants Based on the Continuous Measurements of Atmospheric Radon Concentrations."OYO BUTSURI(in Japanese). 72(4). 422-426 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] T.Ueno, S.Nagao, H.Yamazawa: "Atmospheric Deposition of ^7Be, ^<137>Cs and ^<210>Pb during 1993-2001 at Tokai-mura"Japan Journal of Radioanalytical and Nucl.Chemistry. 255(2). 335-339 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] K.Matsumoto, M.Uematsu, T.Hayano, K.Yoshioka, H.Tanimoto, T.Iida: "Simultaneous Measurements of Particulate Elemental Carbon on the Ground Observation Network over the Western North Pacific during the ACE-Asia Campaign."Journal of Geophysical Research. 108(D23). 8635-8641 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] S.Yamamoto, Y.Yoshida, T.Iida: "Development of an Underground Radon Detector Using an Optical Fiber."IEEE Transactions on Nuclear Science. 50(4). 987-990 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] K.Yoshioka: "The seasonal Change of the Maritime Atmospheric ^<222>Rn Concentration in the Japan Sea and/or the Pacific Ocean."KAIYO(in Japanese). 36(2). 102-106 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] K.SUN, Q.GUO, W.ZHUO: "Feasibility for Mapping Radon Exhalation from Soil in China."J.Nucl.Sci.Technol.. 41(1). 86-90 (2004)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] 飯田孝夫, 山澤弘実: "大気中ラドン濃度の連続観測に基づく地球規模汚染物質の環境動態の考察"応用物理. 72(4). 422-426 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] T.Ueno, S.Nagao, H.Yamazawa: "Atmospheric Deposition of ^7Be, ^<40>K, ^<137>Cs and ^<210>Pb during 1993-2001 at Tokai-mura"Japan Journal of Radioanalytical and Nucl.Chemistry. 255(2). 335-339 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] K.Matsumoto, M.Uematsu, T.Hayano, K.Yoshioka, H.Tanimoto, T.Iida: "Simultaneous Measurements of Particulate Elemental Carbon on the Ground Observation Network over the Western North Pacific during the ACE-Asia Campaign"Journal of Geophysical Research. 108(D23). 8635-8641 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] S.Yamamoto, Y.Yoshida, T.Iida: "Development of an Underground Radon Detector Using an Optical Fiber"IEEE Transactions on Nuclear Science. 50(4). 987-990 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] 吉岡勝廣: "日本海および太平洋の海上境界層内ラドン濃度の季節変化"海洋. 36(2). 102-106 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] K.SUN, Q.GUO, W.ZHUO: "Feasibility for Mapping Radon Exhalation from Soil in China"J.Nucl.Sci.Technol.. 41(1). 86-90 (2004)

    • Related Report
      2003 Annual Research Report
  • [Publications] S.Taguchi, T.Iida, J.Moriizumi: "Evaluation of atmospheric transport model NIRE-CTM-96 by using measured radon-222 concentrations"Tellus. 54B. 250-268 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] J.Koarashi, H.Amano, M.Andoh, T.Iida, J.Morizumi: "Estimation of ^<14>CO_2 flux at soil-atmosphere interface and distribution of 14C in forest ecosystem"Journal of Environmental Radioactivity. 60. 249-261 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] 吉岡勝廣: "ラドン高度分布の時間変化からみた大気の拡散混合過程"エアロゾル研究. 17(4). 267-275 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] 飯田孝夫, 山澤弘実: "大気のラドン濃度の連続観測に基づく地球規模汚染物質の環境動態の考察"応用物理. 72(4). (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] Qiuju Guo: "The Levels of indoor Thoron and its Progeny in Four Areas in China"J. of Nuclear Science and Technology. 38・9. 799-803 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] W.Zhuo, T.Iida, X.Yang: "Occurrence of ^<222>Rn, ^<226>Ra, ^<228>Ra and U in Groundwater in Fujian Province, China"J. Environ. Radioactivity. 53. 111-120 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] S.Yamamoto, K.Tarutani, T.iida et al.: "Dvelopment of a Continuous Radon Concentration Monitoring System in Underground soil"IEEE Trans. Nucl. Sci.. 48・3. 391-394 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] J.Koarashi, H.Amano, M.Andoh, T.Iida, T.Koma: "A New Method for Determining ht Deposition Velocity and Dependence of the Velocity on Environmental Factors"Radiat. Prot. Dosim.. 93・3. 237-243 (2001)

    • Related Report
      2001 Annual Research Report

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Published: 2001-04-01   Modified: 2016-04-21  

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