황해의 해수순환과 해수특성의 월별 변화

Abstract

Abstract : The Yellow Sea is characterized by relatively shallow water depth, varying range of tidal action and very complex coastal geometry such as islands, bays, peninsulas, tidal flats, shoals etc. The dynamic system is controlled by tides, regional winds, river discharge, and interaction with the Kuroshio. The circulation, water mass properties and their variability in the Yellow Sea are very complicated and still far from clear understanding. Numerical simulation of using the ROMS model was conducted for seasonal circulation and thermohaline structure in the Yellow Sea using the Climatological forcing such as winds, heat flux and fresh water precipitation. To account for the tidal effect on the system dynamics, the tidal forcing was combined. The model adopts curvilinear grid with horizontal resolution of 3–5 km and 20 vertical grid spacing confirming to relatively realistic bottom topography. The model was initialized with the LEVITUS annual climatological data and forced by the monthly mean air-sea fluxes of momentum, heat and fresh water derived from COADS. On the open boundaries, climatological temperature and salinity are nudged every 10 days for data assimilation. This study demonstrates a Yellow Sea version of Atlantic Basin experiment conducted by Haidvogel et al. (2000) experiment that the ROMS simulates the dynamic variability of temperature, salinity, and velocity fields in the ocean. However the present study has been improved to combine the tidal forcing that is a significant feature in the Yellow Sea.