Journal of Korean Society for Atmospheric Environment (한국대기환경학회지)

Korean Society for Atmospheric Environment (한국대기환경학회)
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Comparison of CALPUFF and HYSPLIT Models for Atmospheric Dispersion Simulations of Radioactive Materials

CALPUFF와 HYSPLIT의 방사성물질 대기확산 특성 비교

  • An, Hye Yeon (Division of Earth Environmental System, Pusan National University) ;
  • Kang, Yoon-Hee (The Institute of Environmental Studies, Pusan National University) ;
  • Song, Sang-Keun (Department of Earth and Marine Sciences, Jeju National University) ;
  • Kim, Yoo-Keun (Division of Earth Environmental System, Pusan National University)
  • 안혜연 (부산대학교 지구환경시스템학부) ;
  • 강윤희 (부산대학교 환경연구원) ;
  • 송상근 (제주대학교 지구해양과학과) ;
  • 김유근 (부산대학교 지구환경시스템학부)
  • Received : 2015.06.25
  • Accepted : 2015.10.26
  • Published : 2015.12.31
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Abstract

In this study, the atmospheric dispersion of radioactive material ($^{137}Cs$) was simulated with regard to its impact within a 50-km radius from the Kori Nuclear Power Plant (NKPP) based on two different types of models (the non-steady-state puff model CALPUFF and the lagrangian model HYSPLIT) during the spring of 2012 (May 2012). The dispersion distribution of $^{137}Cs$ calculated in the CALPUFF model was similar to that of the HYSPLIT model, but the magnitudes of differences in its spatio-temporal concentrations between the two models were different. The $^{137}Cs$ concentrations simulated by the CALPUFF were significantly lower than those of the HYSPLIT due to a limitation of puff models (e.g. puff size growth over time). The CALPUFF had the advantage of determining the dispersion of radioactive materials and their impacts on the surrounding regions, compared with the HYSPLIT that had high concentrations of $^{137}Cs$ in only small local areas with the movement of air masses along the local winds.

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