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Youn, D. and Park, Y.H., 2021. Climate change: Characteristics of storms around Korea. In: Lee, J.L.; Suh, K.-S.; Lee, B.; Shin, S., and Lee, J. (eds.), Crisis and Integrated Management for Coastal and Marine Safety. Journal of Coastal Research, Special Issue No. 114, pp. 256–260. Coconut Creek (Florida), ISSN 0749-0208. Many studies have shown that the intensity and frequency of storms are increasing due to global warming. Because storms are affected by many factors, such as the climate and sea, the relationships of some factors still need to be studied for better understanding. Most recent storm studies have focused on increasing the accuracy of numerical model simulations; however, this study employs statistical methods to find the correlation among factors that determined storm characteristics. Correlation analysis was conducted using certain factors in the ocean and atmosphere. The analysis was conducted using R software for statistical computing of the selected storms passing near the Korean Peninsula, considering the difficulty of storm study. Typhoons occurring in the last 40 years were analyzed, and the relationships of many variables were calculated. The number of typhoons heading for Korea has increased, but the increment of their intensity was not apparent in the observational data. Unlike previous methods, this work was conducted for typhoons that passed through a defined area on the southern coast of the Korean Peninsula. In the region between 30° and 35° N, typhoon paths changed to move northeast instead of being dominated by the Westerlies. Typhoons starting at lower latitudes and more easterly locations tend to develop into strong typhoons, and typhoons starting at lower latitudes tend to be larger. [ABSTRACT FROM AUTHOR]

Park, Y.H. and Youn, D., 2021. Characteristics of storm surge based on the forward speed of the storm. In: Lee, J.L.; Suh, K.-S.; Lee, B.; Shin, S., and Lee, J. (eds.), Crisis and Integrated Management for Coastal and Marine Safety. Journal of Coastal Research, Special Issue No. 114, pp. 71–75. Coconut Creek (Florida), ISSN 0749-0208. Storm surge is determined by the attributes of the storm and several other factors. The forward speed of a storm is known to increase the wave height, but its effect on storm surges has not yet been studied in detail. This study focused on the forward speed of storms approaching the Korean Peninsula, which has been getting slower due to climate change. The forward speed continued to change along the track of the storm until extinction. Despite the difficulties caused by the changes in the moving direction and forward speed of storms, this study investigates the effects of their forward speed on the storm surge using the ADCIRC numerical model. Variations in storm surge due to the forward speed of real and virtual storms were studied by simplifying the other factors. Many test simulations were conducted under various conditions, such as steady and accelerated forward speeds and routes along an artificial straight track of the storm. The results were analyzed to determine the characteristics of the storm surge in terms of forward speed. Some of these were compared with actual cases. Based on the model results, it was found that the forward speed of the storm was inversely proportional to the duration of the storm, and their ratios produced different forms of storm surges. When the forward speed decreases, a storm surge is induced for a longer time. The results also showed that the maximum storm surge increased as the forward speed increased. [ABSTRACT FROM AUTHOR]