한국환경과학회지 제31권 제7호 (p.617-635)

대기-해양 결합 자료동화가 서해 연안지역의 기상예측에 미치는 영향 연구

Effect of a Coupled Atmosphere-ocean Data Assimilation on Meteorological Predictions in the West Coastal Region of Korea
키워드 :
Coupled data assimilation,Sea surface temperature,Wind speed,Coupled atmosphere-ocean model,West coast of Korea

목차

Abstract
1. 서 론
2. 재료 및 방법
   2.1. 대상지역, 자료 및 방법
   2.2. 모델 구성 및 입력자료
3. 결과 및 고찰
   3.1. 대기-해양 결합 자료동화에 따른 해양기상 변화 분석
   3.2. 연안 국지기상에 미치는 결합 자료동화의 효과
4. 결 론
감사의 글
REFERENCES

초록

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).