Journal of Environmental Science International (한국환경과학회지)

The Korean Environmental Sciences Society (한국환경과학회)
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Effect of a Coupled Atmosphere-ocean Data Assimilation on Meteorological Predictions in the West Coastal Region of Korea

대기-해양 결합 자료동화가 서해 연안지역의 기상예측에 미치는 영향 연구

  • Lee, Sung-Bin (Faculty of Earth and Marine Convergence/Earth and Marine Science Major, Jeju National University) ;
  • Song, Sang-Keun (Department of Earth and Marine Sciences, Jeju National University) ;
  • Moon, Soo-Hwan (Faculty of Earth and Marine Convergence/Earth and Marine Science Major, Jeju National University)
  • 이성빈 (제주대학교 지구해양융합학부 지구해양전공) ;
  • 송상근 (제주대학교 지구해양과학과) ;
  • 문수환 (제주대학교 지구해양융합학부 지구해양전공)
  • Received : 2022.06.05
  • Accepted : 2022.06.23
  • Published : 2022.07.31
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Abstract

The effect of coupled data assimilation (DA) on the meteorological prediction in the west coastal region of Korea was evaluated using a coupled atmosphere-ocean model (e.g., COAWST) in the spring (March 17-26) of 2019. We performed two sets of simulation experiments: (1) with the coupled DA (i.e., COAWST_DA) and (2) without the coupled DA (i.e., COAWST_BASE). Overall, compared with the COAWST_BASE simulation, the COAWST_DA simulation showed good agreement in the spatial and temporal variations of meteorological variables (sea surface temperature, air temperature, wind speed, and relative humidity) with those of the observations. In particular, the effect of the coupled DA on wind speed was greatly improved. This might be primarily due to the prediction improvement of the sea surface temperature resulting from the coupled DA in the study area. In addition, the improvement of meteorological prediction in COAWST_DA simulation was also confirmed by the comparative analysis between SST and other meteorological variables (sea surface wind speed and pressure variation).

Keywords

Acknowledgement

이 논문은 2022학년도 제주대학교 교원성과지원사업에 의하여 연구되었음.

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