Atmospheric and Oceanic Influences on Tropical Cyclone Activity over the Yellow Sea

Hyeong-Seog Kim, Korea Maritime and Ocean University, Ocean Science and Technology School, Busan, Korea, Republic of (South) and Gunwoo Do, Korea Maritime and Ocean University, Department Convergence Study on the Ocean Science and Technology, Busan, South Korea
Abstract:
The tropical cyclone (TC) moving into the Yellow Sea usually become weaker because of the low sea surface temperature and high vertical wind shear. However, some TCs such as KOMPASU(1007), BOLAVEN(1215), and LINGLING(1913) maintain their intensity and induce severe damages on the western coast of Korea Peninsula. In this study, the TC activity over the Yellow Sea and the environmental factors are analyzed. Because of the thin mixed layer depth in Yellow Sea, the cold wake is an important factor in change of TC intensity. Also the mid-latitude jet also influences TC intensity by modulating the vertical wind shear and local circulation. To examine these factors, the relationships among the ocean surface temperature, mixed layer depth, vertical wind shear, TC speed and intensity are analyzed using the reanalysis data and ocean-coupled model simulation.
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