Journal of Korean Society of Coastal and Ocean Engineers (한국해안해양공학회지)

Korean Society of Coastal and Ocean Engineers (한국해안·해양공학회)
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Modeling of Ocean Circulation in the Neighboring Seas of Korean Peninsula from Global Ocean Circulation Model

전구 해수순환 수치모형에 의한 한반도 주변의 순환 모사

  • 최병호 (성균관대학교 토목환경공학과) ;
  • 최영진 (큐슈대학 지구시스템과학부) ;
  • 김철호 (한국 해양연구원 지구환경연구본부)
  • Published : 2004.12.01
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Abstract

Global prognostic models based on NCOM(NCAR CSM Ocean Model) of NCAR which is generic from Bryan-Cox-Semtner model are established to study the ocean circulation in the neighboring seas of Korean peninsula. The model domain covers areas from $80.6{^\circ}S~88.6{^\circ}N$in meridional direction and the vertical water column is divided into 15 levels taking enhanced grid resolution of $0.3^\circ$ around Korean peninsula. Island option is used for 22 islands to simulate inshore circulation by hole-relaxation method and the restart hydrographic data are taken from NCAR(1998) CSM model that has been run for 300 years. The wind stress data are taken from Choi et al. (2002). Based on the model results, circulation patterns in the NW Pacific and global oceans are investigated. Volume transports calculated at five straits in the neighboring seas of Korean peninsula are compared with the results from Choi et al. (2002) and other observed data.

전구해양순환모형인 Bryan-Cox-Semtner모형에서 파생된 NCAR의 NCOM모형을 이용하여 한반도 주변해역의 해수순환을 가능한 세밀하게 해상시킨 예단적 전구해양순환모형을 수립하였다. 모형영역은 남북방향으로 $80.6{^\circ}S~88.6{^\circ}N$의 범위로서 북극해가 제외되었으며, 한반도 주변이 약 $0.3^\circ$로 해상된 수평 가변격자와 연직방향으로 15층으로 구성하였다. 섬 주변해안의 순환을 적절히 재현하기 위한 구멍완화법(Hole-relaxation method)을 적용하여 22개의 섬처리가 고려되었으며, NCAR에서 CSM(Climate System Model)운용을 위해 300년동안 spin-up 계산된 결과를 초기자료로 하고, Choi et al.(2002)의 접합 대기해양모형의 결과로부터 얻은 바람응력자료가 사용되었다. 모형결과로부터, 전구와 북서태평양 해역의 순환패턴을 살펴보았으며, 한반도 주변의 5개해협에서의 용적수송량을 Choi et al.(2002)의 결과 및 관측치와 비교하였다.

Keywords

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