Reanalyzing the Relationship of Tropical Cyclone Frequency and Intensity Affecting South Korea with the Pacific Decadal Oscillation

Author:

Kim Dasol1,Park Doo-Sun R.2,Chang Minhee3,Cha Dong-Hyun4,Lee Minkyu5

Affiliation:

1. a Department of Geography, University of Florida, Gainesville, Florida

2. b Department of Earth Science Education, Kyungpook National University, Daegu, South Korea

3. c School of Earth and Environmental Sciences, Seoul National University, Seoul, South Korea

4. d Department of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology, Ulsan, South Korea

5. e Division of Environmental Science and Engineering, Pohang University of Science and Technology, Pohang, South Korea

Abstract

Abstract Several studies have reported a significant negative correlation between the tropical cyclone (TC) frequency affecting South Korea (KOR TC frequency) and the Pacific decadal oscillation (PDO), which is accompanied by the weak negative correlation between the TC intensity when TCs enter Korean coastal seas (KOR TC intensity) and PDO. However, the weak negative relationship between KOR TC intensity and PDO contradicts results from other related studies regarding the relationship between TC activity in the western North Pacific and PDO. Thus, we reexamined the PDO relationships with both KOR TC frequency and intensity and their mechanisms. Although a negative correlation between KOR TC frequency and PDO was consistently found, in contrast to previous studies, we found a significant positive correlation between KOR TC intensity and PDO. According to our analyses, during the negative phase, anomalous southeasterly winds over the Korean Peninsula and the northwestward shift in the mean TC genesis location favor the increase in KOR TC frequency. The northwestward mean TC genesis location migrates, which shortens the time spent over the warm ocean, weakening the lifetime maximum intensity and, consequently, the KOR TC intensity. We confirmed that our result is robust by performing various sensitivity tests examining the best track data, analysis period, TC season, and KOR TC definition.

Funder

National Research Foundation of Korea

Publisher

American Meteorological Society

Subject

Atmospheric Science

Reference49 articles.

1. Tropical cyclone minimum sea level pressure/maximum sustained wind relationship for the western North Pacific;Atkinson, G. D.,1977

2. Increasing activity of tropical cyclones in East Asia during the mature boreal autumn linked to long-term climate variability;Basconcillo, J.,2022

3. Tropical cyclone genesis potential index in climate models;Camargo, S. J.,2007

4. The physics of tropical cyclone motion;Chan, J. C. L.,2005

5. Recent decrease in the difference in tropical cyclone occurrence between the Atlantic and the western North Pacific;Chan, J. C. L.,2022

Cited by 2 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3