High Resolution Regional and Coastal Operational Storm Surges/Tide Forecasting System in Korea

This study was performed to compare storm surges/tide simulated by the regional and coastal storm surges/tide forecast system (RTSM (regional tide/storm surges model), CTSM (coastal tide/storm surges model)) using two different inputs from weather models (RDAPS (Regional Data Assimilation and Prediction System) and KWRF (Korea Weather and Research Forecasting)) during two typhoons that occurred between 2007 and 2008. Both the RDAPS and KWRF are the operational weather forecasting system in KMA (Korea Meteorological Administration). The horizontal resolutions of RDAPS and KWRF are 30 and 10 km, respectively. The storm surges/tide was hind casted using sea wind and pressure fields of two Typhoons which was approaching Korean Peninsula. The CTSM using input from KWRF simulate very well the storm surges/tide pattern in the complex coastal areas. The result showed that the storm surges by the coastal storm surges/tide model with high resolution input was in well agreement with the observed sea level occurred by high tide and storm surges in the coastal areas.