Impact of the quasi-biweekly oscillation on the super typhoon tracks in winter over the western North Pacific

doi:10.1007/s00382-019-04614-6

CORC > 南海海洋研究所 > 中国科学院南海海洋研究所 > 热带海洋环境国家重点实验室(LTO)

	Impact of the quasi-biweekly oscillation on the super typhoon tracks in winter over the western North Pacific
	Chen, Zesheng ; Shi, Yanping 1; Du, Yan 1; Wang, Chunzai
刊名	CLIMATE DYNAMICS
	2019
卷号	53 期号:2019-01-02 页码:793
关键词	Intraseasonal oscillation Quasi-biweekly oscillation Super typhoon tracks Steering flow
ISSN号	0930-7575
DOI	10.1007/s00382-019-04614-6
英文摘要	This study investigates the tracks of category 4 and 5 typhoons (TYs) in the western North Pacific (WNP) in November-December during 1979-2016 and their relationships with the intraseasonal oscillation (ISO) including the 30-60-day and 12-25-day variations. It is shown that the impact of ISO on the TY tracks found in previous studies is mainly contributed by the quasi-biweekly oscillation (QBWO). The impact on the TY tracks is through influence on the steering flows over the WNP. Accordingly, TYs are separated into two types: moving westward (TYW) and northeastward (TYE). QBWO in the WNP is associated with an active convection originated from the equatorial WNP, which propagates northwestward and reaches the SCS and middle-high latitudes. TYW mostly occurs in the decline stage of the QBWO life cycle, while TYE appears in the mature stage of QBWO. For TYW, QBWO hardly changes the background large-scale circulation, which features an anticyclonic circulation covering the entire WNP and SCS, thus TYW moves westward. However, TYE appears in the mature phase of QBWO. The strong convection induces an intense cyclonic circulation in western part of the WNP, thus changes the steering flow. The steering flow features an anticyclonic circulation over the mid-eastern WNP, which is favorable for TYE to divert the direction and move northeastward.
内容类型	期刊论文
源URL	[http://ir.scsio.ac.cn/handle/344004/17707]
专题	南海海洋研究所_热带海洋环境国家重点实验室(LTO)
作者单位	1.Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, 164 West Xingang Rd, Guangzhou 510301, Guangdong, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Chen, Zesheng,Shi, Yanping,Du, Yan,et al. Impact of the quasi-biweekly oscillation on the super typhoon tracks in winter over the western North Pacific[J]. CLIMATE DYNAMICS,2019,53(2019-01-02):793, 804.
APA	Chen, Zesheng,Shi, Yanping,Du, Yan,&Wang, Chunzai.(2019).Impact of the quasi-biweekly oscillation on the super typhoon tracks in winter over the western North Pacific.CLIMATE DYNAMICS,53(2019-01-02),793.
MLA	Chen, Zesheng,et al."Impact of the quasi-biweekly oscillation on the super typhoon tracks in winter over the western North Pacific".CLIMATE DYNAMICS 53.2019-01-02(2019):793.