Characteristics of the changes in tropical cyclones influencing the South Korean region over the recent 10 years (2001–2010)

Yumi Cha (), Ki-Seon Choi, Ki-Ho Chang, Ji-Yeon Lee and Do-Shick Shin

Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, 2014, vol. 74, issue 3, 1729-1741

Abstract: Through the investigation of tropical cyclone (TC) characteristics related to climate change, this study found that the frequency of TCs occurring over the Western North Pacific has recently decreased slightly, while their average intensity has increased. The number of overall TCs that passed within the vicinity of South Korea has also been reduced, but the number of strong typhoons in the area, those with maximum wind speeds of more than 44 m/s, has significantly increased. These changes are closely related to the following phenomena. (1) The average genesis region of TCs that influence South Korea has moved eastward. Accordingly, the TCs tend to strengthen as they move westward for long distances along the Intertropical Convergence Zone (ITCZ) trade easterlies and the southern boundary of the North Pacific Subtropical High (NPSH). (2) The NPSH and Asia Monsoon trough, which are known to affect TC tracks, have extended to the northwest and southeast. This has caused TCs that travel to higher latitudes and curve back toward the Korean Peninsula to become more frequent. (3) TCs have approached the Korean Peninsula without hitting land. In addition, the sea surface temperature became higher than it was before. These factors have caused TCs to maintain their strength or become stronger than before. Copyright Springer Science+Business Media Dordrecht 2014

Keywords: Tropical cyclones; Track; Intensity; Genesis position (search for similar items in EconPapers)
Date: 2014
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DOI: 10.1007/s11069-014-1275-4

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