Northwest Pacific Regional Ocean Forecast System of KIOST

Title
Northwest Pacific Regional Ocean Forecast System of KIOST
Author(s)
김영호; 진현근
KIOST Author(s)
Jin, Hyunkeun(진현근)
Publication Year
2015-04-22
Abstract
KIOST has developed a regional framework of the Northwest Pacific ocean forecast system as a regional applicationof GFDL Modular Ocean Model Version 5 (MOM5). The open boundary condition, tidal mixing parameterizationand data assimilation are considered. The open boundary problem is central to the successful limited area model. Arobust open boundary condition has been introduced to the MOM5 by controlling the barotropic velocity. TheEnsemble Optimal Interpolation has been implemented to assimilate Sea Surface Temperature, Sea Surface HeightAnomaly (SSHA) and temperature/salinity profiles into the ocean model. In addition, the tidal mixingparameterization has been applied to the model. In the marginal seas of the Northwest Pacific, especially Yellow Seaand East China Sea, the tidal mixing is one of dominant oceanic processes. Without the tide, the numerical modelcould not capture the general circulation especially in summer. Conversely with the tide, it is not easy to handle theSSHA during assimilating it into the model. By applying the tidal mixing parameterization, the model well resolvesthe tide-induced current as well as the SSHA has been directly assimilated. There are also issues of the horizontalgrid resolution on the western boundary currents. In particular, the horizontal grid resolution is critical to resolve thewestern boundary current such as the Kuroshio and East Korea Warm Currenton are considered. The open boundary problem is central to the successful limited area model. Arobust open boundary condition has been introduced to the MOM5 by controlling the barotropic velocity. TheEnsemble Optimal Interpolation has been implemented to assimilate Sea Surface Temperature, Sea Surface HeightAnomaly (SSHA) and temperature/salinity profiles into the ocean model. In addition, the tidal mixingparameterization has been applied to the model. In the marginal seas of the Northwest Pacific, especially Yellow Seaand East China Sea, the tidal mixing is one of dominant oceanic processes. Without the tide, the numerical modelcould not capture the general circulation especially in summer. Conversely with the tide, it is not easy to handle theSSHA during assimilating it into the model. By applying the tidal mixing parameterization, the model well resolvesthe tide-induced current as well as the SSHA has been directly assimilated. There are also issues of the horizontalgrid resolution on the western boundary currents. In particular, the horizontal grid resolution is critical to resolve thewestern boundary current such as the Kuroshio and East Korea Warm Current
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/25615
Bibliographic Citation
18th Pacific-Asian Marginal Seas Meeting at Naha, pp.1, 2015
Publisher
18th Pacific-Asian Marginal Seas Meeting
Type
Conference
Language
English
Publisher
18th Pacific-Asian Marginal Seas Meeting
Related Researcher
Research Interests

Development of Ocean Circulation Modeling System,해양 순환 모델링 시스템 개발

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