Journal of Environmental Science International (한국환경과학회지)

The Korean Environmental Sciences Society (한국환경과학회)
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The Characteristics in the Simulation of High-resolution Coastal Weather Using the WRF and SWAN Models

WRF-SWAN모델을 이용한 상세 연안기상 모의 특성 분석

  • Son, Goeun (Division of Earth Environmental System, Pusan National University) ;
  • Jeong, Ju-Hee (Division of Earth Environmental System, Pusan National University) ;
  • Kim, Hyunsu (Division of Earth Environmental System, Pusan National University) ;
  • Kim, Yoo-Keun (Division of Earth Environmental System, Pusan National University)
  • 손고은 (부산대학교 지구환경시스템학부) ;
  • 정주희 (부산대학교 지구환경시스템학부) ;
  • 김현수 (부산대학교 지구환경시스템학부) ;
  • 김유근 (부산대학교 지구환경시스템학부)
  • Received : 2013.12.02
  • Accepted : 2013.12.19
  • Published : 2014.03.31
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Abstract

In this study, the characteristics in the simulation of high-resolution coastal weather, i.e. sea surface wind (SSW) and significant wave height (SWH), were studied in a southeastern coastal region of Korea using the WRF and SWAN models. This analyses was performed based on the effects of various input factors in the WRF and SWAN model during M-Case (moderate days with average 1.8 m SWH and $8.4ms^{-1}$ SSW) and R-Case (rough days with average 3.4 m SWH and $13.0ms^{-1}$ SSW) according to the strength of SSW and SWH. The effects of topography (TP), land cover (LC), and sea surface temperature (SST) for the simulation of SSW with the WRF model were somewhat high on v-component winds along the coastline and the adjacent sea of a more detailed grid simulation (333 m) during R-Case. The LC effect was apparent in all grid simulations during both cases regardless of the strength of SSW, whereas the TP effect had shown a difference (decrease or increase) of wind speed according to the strength of SSW (M-Case or R-Case). In addition, the effects of monthly mean currents (CR) and deepwater design waves (DW) for the simulation of SWH with the SWAN model predicted good agreement with observed SWH during R-Case compared to the M-Case. For example, the effects of CR and DW contributed to the increase of SWH during R-Case regardless of grid resolution, whereas the differences (decrease or increase) of SWH occurred according to each effect (CR or DW) during M-Case.

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