Development of a Real-time Storm-surge Response System for Decision-making Support on the Korean Coast

A real-time storm surge prediction system based on typhoon advisories issued by the Korea Meteorological Administration was constructed to support decision-making regarding the mitigation of storm surge disasters. This approach was tested in real time by providing storm surge prediction data during the approach of Typhoon Chaba in 2016, to support National Disaster and Safety Status Control Center decision-making in response to that system's storm surge. A 140 core-based parallel cluster was used for storm surge prediction and the entire process (from storm surge height prediction to provision of information for decision-making) lasted three hours. The root mean square errors of the maximum water surface elevation and the maximum surge height provided were 0.09-0.11 m and 0.14-0.26 m, respectively, and the relative errors were 6-9% and 34-69%.