Journal of Radiation Protection and Research

The Korean Association for Radiation Protection (대한방사선방어학회)
권호 표지

Development of Long-Range Atmospheric Dispersion Model against a Nuclear Accident

원전 사고를 대비한 장거리 대기 확산모델 개발

  • 서경석 (한국원자력 연구소 원자력환경연구팀) ;
  • 김은한 (한국원자력 연구소 원자력환경연구팀) ;
  • 한문희 (한국원자력 연구소 원자력환경연구팀)
  • Published : 2002.09.30
Download PDF
⟨ Previous Next ⟩

Abstract

The three-dimensional long-range dispersion model has been developed to understand the characteristics of the transport and diffusion of radioactive materials released into atmosphere. The model is designed to compute air concentration and ground deposition at distances up to some thousands of kilometers from the source point in horizontal direction. The vertical turbulent motion is considered separately within the mixing layer and above the mixing layer. The test simulation was performed In the area of Northeast Asia. The release point was assumed in the east part of China. The calculated concentration distributions art mainly advected toward the southeast part of release point by the wind fields. The developed model will be used to estimate the radiological consequences against a nuclear accident. The model will be supplemented by the comparative study using the data of the long-range field experiments.

대기 중으로 방출된 방사성물질의 이동 확산 현상을 이해하기 위하여 3차원 장거리 확산 모델이 개발되었다. 모델은 수평방향으로 방출점으로부터 수천 키로 미터의 거리까지 공기중 농도와 지표면 침적을 계산하도록 설계되었다. 수직 난류운동은 혼합층 내와 혼합층 위로 분리하도록 고려하였다. 시험계산은 동북 아시아권의 영역을 고려하였고, 방출점은 중국의 동쪽 지점을 가정하였다. 계산된 농도분포는 바람장에 의해 방출점의 남동방향을 향해 주로 이동되었다. 개발된 모델은 원전 사고시 방사선 피해를 추정하기 위하여 이용될 것이며, 모델은 장거리 야외확산실험의 자료를 이용하여 비교 검증 연구를 통하여 보완될 것이다.

Keywords

References

  1. Lurmann, F.W., Lloyd, A.C. and Atkinson, R., 'A chemical mechanism for use in long-range transport/acid deposition computer modeling,' J. Geophy. Res., 91, 10905-10936(1986) https://doi.org/10.1029/JD091iD10p10905
  2. Peters, L.K., Berkowitz, C.M. and Carmichael, G.R, 'The current state and future direction of- Eulerian models in simulating the tropospheric chemistry and transport of trace species : a review,' Atmospheric Environ., 29, 189-222(1995)
  3. Veerabhadra, R, Kotamarthi, Gregory, R and Carmichael, G.R., 'A modeling study of the long-range transport of Kosa using particle trajectory methods,' Tellus, 45B, 426-441(1993)
  4. Lee, J.G., Kim, Y.H. and Kim, J.S., 'A case study of the yellow sand phenomenon observed over the Korean peninsula for 1-3 April 1993,' J. Atmospheric Res., 10(1), 51-73(1993)
  5. Klug, W., Graziani, G., Grippa, G., Pierce, D. and Tassone, C, Evaluation of Long Range Atmospheric Transport Models using Environmental Radioactivity Data from the Chernobyl Accident, pp. 1-353, Elservier Applied Science, London and New York (1992)
  6. Mosca, S., Bianconi, R, Bellasio, R., Graziani, G. and Klug, W., ATMESII- Evaluation of long-range dispersion models using data of the 1st ETEX release, pp.1-457, Joint Research Center(1998)
  7. 한국원자력안전기술원, 원자력 안전성 확보를 위한 네트웍 구성 . 운영, 한국원자력안전기술원, KINS/AR-704(1999)
  8. 한문희, 김은한, 서경석, 황원태, 최영길, 방사선 비상대응 기술개발, 한극원자력연구소, KAERI/RR-2034/99(2000)
  9. Desiato, F., 'A long-range dispersion model evaluation study with Chernobyl data,' Atmospheric Environ, 26A(15), 2805-2820(1992)
  10. Raza, S.S., Avila, R. and Cervantes, J. 'A 3-D Lagrangian stochastice model for the mso-scale atmospheric dispersion applications,' Nuclear Engineering and Design, 208, 15-28(2001)
  11. Grell, G.A., Dudhia, J. and Stauffer, D.R., A description of the fifth-generation Penn State/NCAR mesoscale model MM5, NCARTN-398(1995)
  12. 정효상, 방사선 바상대응을 대비한 기상장 평가 기술 개발, 기상연구소, pp. 1-69(2000)
  13. Anfossi, D., Sacchetti, D. and Catelli, ST., 'Development and sensitivity analysis of a Lagrangian particle model for long range dispersion,' Environmental Software, 10(4), 263-287(1995)
  14. Gifford, F.A., 'Horizontal diffusion in the atmosphere: a Lagrangian-dynamical theory,' Atmospheric Environ, 16(3), 505-512(1982)
  15. McMahon, T.A. and Denison, P.J., 'Empirical atmospheric deposition parameters,' Atmospheric Environ, 13, 571-585(1979)
  16. European Commission, The European Tracer Experiment, Joint Rese. Center, EUR 18143 EN(1998)