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首页> 外文期刊>Journal of Geophysical Research, D. Atmospheres: JGR >Effects of the Pacific-Japan teleconnection pattern on tropical cyclone activity and extreme precipitation events over the Korean peninsula
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Effects of the Pacific-Japan teleconnection pattern on tropical cyclone activity and extreme precipitation events over the Korean peninsula

机译：太平洋日本遥相关模式对朝鲜半岛热带气旋活动和极端降水事件的影响

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摘要

In this study, an exploratory analysis was carried out to gain a better understanding of the potential impacts of the two phases (negative and positive) of the Pacific-Japan (PJ) pattern on tropical cyclone (TC) activity affecting the Korean Peninsula (KP) and TC-induced extreme precipitation events over five major river basins in Korea. The results show that large-scale atmospheric environments during the years in the positive PJ phase (referred to as positive PJ years) are more favorable for TC activity than those during the years in the negative PJ phase (referred to as negative PJ years). It is found that wind shear is weaker, rising motion is stronger, and relative humidity is higher over the KP in positive PJ years than in negative PJ years. TCs affecting the KP during positive (negative) PJ years tend to occur more to the southwest (northeast), recurve at locations more to the northwest (northeast), and show an increase (decrease) in frequency over Korea and Japan. As a result, TCs making landfall are found more often over southeastern South Korea during positive PJ years. Despite the relatively modest sample size used in this study, we expect that the results described herein will be useful in developing a critical support system for the effective reduction and mitigation of TC-caused disasters as well as for water supply management in coupled human and natural systems.
机译：在这项研究中，进行了探索性分析，以更好地了解太平洋日本（PJ）模式的两个阶段（负向和正向）对影响朝鲜半岛（KP）的热带气旋（TC）活动的潜在影响。 ）和TC诱发的韩国五个主要流域的极端降水事件。结果表明，在正PJ阶段的年份（称为正PJ年）中的大规模大气环境比对负PJ阶段的年份（称为负PJ年）更有利于TC活动。研究发现，在正PJ年中，风切变较弱，上升运动较强，相对湿度高于负PJ年。在正（负）PJ年中影响KP的TC倾向于在西南（东北）更多地发生，在西北（东北）更多的位置上弯曲，并且在韩国和日本的频率增加（减少）。结果，在积极的PJ年代，登陆韩国的TC更为常见。尽管本研究中使用的样本量相对较小，但我们希望本文所述的结果将有助于开发关键支持系统，以有效减少和缓解TC造成的灾难，以及人与自然的耦合供水管理系统。

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