文章基本信息

标题：Interdecadal variation of Korea affecting TC activity in early 1980s
本地全文：下载
作者：Jae-Won Choi ; Jae-Won Choi ; Yumi Cha 等
期刊名称：Geoscience Letters
电子版ISSN：2196-4092
出版年度：2017
卷号：4
期号：1
页码：1-7
DOI：10.1186/s40562-017-0068-5
语种：English
出版社：Springer
摘要：Abstract By performing a statistical change-point analysis of activities of the tropical cyclones (TCs) that have affected Korea (K-TCs), it was found that there was a significant change between 1983 and 1984. During the period of 1984–2004 (P2), more TCs migrated toward the west, recurved in the southwest, and affected Korea, compared to the period of 1965–1983 (P1). These changes for P2 were related to the southwestward expansion of the subtropical western Pacific high (SWPH) and, simultaneously, elongation of its elliptical shape toward Korea. Because of these changes, the central pressure and lifetime of K-TC during P2 were deeper and longer, respectively, than figures for P1. This stronger K-TC intensity for P2 was related to the more southwestward genesis due to the southwestward expansion of the SWPH. The weaker vertical wind shear environment during P2 was more favorable for K-TC to maintain a strong intensity in the mid-latitudes of East Asia.
关键词：KeywordsEnChange-point analysisTropical cycloneKoreaShiftVertical wind shear