气候变化领域集成服务门户(CCPortal): Combined Effect of the PDO and ENSO on the Date of the First Tropical Cyclone Landfall in Continental East Asia

CCPortal

DOI	10.1029/2020JD034059
	Combined Effect of the PDO and ENSO on the Date of the First Tropical Cyclone Landfall in Continental East Asia
	Li S.; Xiao Z.; Zhao Y.
发表日期	2021
ISSN	2169897X
卷号	126 期号:9
英文摘要	The date of the first tropical cyclone (TC) landfall (DFTCL) is important for TC disaster prevention. This study analyzes the variation in the characteristics of the DFTCL in continental East Asia and investigates the possible effect of the Pacific Decadal Oscillation (PDO) and the El Niño-Southern Oscillation (ENSO) on the DFTCL. Results show that the combined effect of the PDO and ENSO plays an important role in whether TC landfall occurs relatively earlier or later. During negative PDO phases, the DFTCL is impacted significantly by ENSO events. TCs tend to make landfall later (earlier) in the years following El Niño (La Niña). However, little influence is noticeable for the ENSO events during positive PDO phases. The combined effect is possibly associated with the anomalous anticyclone (cyclone) in the western North Pacific (South China Sea) which is modulated by different PDO phases asymmetrically. During negative PDO phases, the tropical Indian Ocean (TIO) has a strong response to El Niño events in winter. The warm anomaly persists in the following months until early summer. This induces the anomalous anticyclone in the western North Pacific which is enhanced by the anomalous meridional circulation. The anomalous anticyclone can suppress TC genesis and landfall. On the other hand, the TIO has a significant cooling response to La Niña events and induces the anomalous cyclone near the South China Sea. The anomalous cyclone favors earlier than usual TC genesis and landfall. However, this relationship cannot be detected in the positive PDO phase. © 2021. American Geophysical Union. All Rights Reserved.
英文关键词	Date of first tropical cyclone landfall; ENSO; PDO; tropical Indian Ocean
语种	英语
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/185232
作者单位	State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; University of Chinese Academy of Sciences, Beijing, China; Xiamen Key Laboratory of Straits Meteorology, Xiamen, China
推荐引用方式 GB/T 7714	Li S.,Xiao Z.,Zhao Y.. Combined Effect of the PDO and ENSO on the Date of the First Tropical Cyclone Landfall in Continental East Asia[J],2021,126(9).
APA	Li S.,Xiao Z.,&Zhao Y..(2021).Combined Effect of the PDO and ENSO on the Date of the First Tropical Cyclone Landfall in Continental East Asia.Journal of Geophysical Research: Atmospheres,126(9).
MLA	Li S.,et al."Combined Effect of the PDO and ENSO on the Date of the First Tropical Cyclone Landfall in Continental East Asia".Journal of Geophysical Research: Atmospheres 126.9(2021).