气候变化领域集成服务门户(CCPortal): Characteristics of the onset; withdrawal; and breaks of the western North Pacific summer monsoon in the 1949

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DOI	10.1175/JCLI-D-19-0734.1
	Characteristics of the onset; withdrawal; and breaks of the western North Pacific summer monsoon in the 1949–2014 period
	Vega I.; Ribera P.; Gallego D.
发表日期	2020
ISSN	0894-8755
起始页码	7371
结束页码	7389
卷号	33 期号:17
英文摘要	The western North Pacific summer monsoon (WNPSM) onset and withdrawal dates as well as its breaks have been determined throughout the 1949–2014 period by defining the monsoon daily directional index (MDDI). This index, developed exclusively with wind direction observations, is an upgrade of the monthly western North Pacific directional index. The onset date shows a high interannual variability, varying between early May and early August, whereas the WNPSM withdrawal shows a lower interannual variability, occurring between October and mid-November. The MDDI reflects the multibreak character of the WNPSM. Breaks, which tend to last a few weeks, are more likely to happen from mid-August to early September and from late June to mid-July. This bimodal distribution shows decadal variability. In addition, the monsoon dates determined by the MDDI show very good agreement with relationships previously described in literature, such as the influence of tropical Pacific SST on the monsoon onset/withdrawal and changes in tropical cyclone (TC) tracks related to monsoon breaks. The WNPSM tends to start earlier (later) and finish later (earlier) under eastern Pacific (EP) La Niña (El Niño) conditions, especially from the 1980s on. Central Pacific (CP) ENSO is also associated with the monsoon withdrawal, which is advanced (delayed) under CP El Niño (La Niña). TCs tend to move from the Philippine Sea to the South China Sea during active monsoon days whereas they tend to reach higher latitudes during inactive monsoon days, especially in August and July. © 2020 American Meteorological Society.
英文关键词	Hurricanes; Lanthanum compounds; Nickel compounds; Oceanography; Storms; Tropics; Bimodal distribution; Decadal variability; Eastern pacific; Higher latitudes; Interannual variability; Tropical cyclone; Western North Pacific; Western north pacific summer monsoons; Atmospheric thermodynamics; annual variation; decadal variation; El Nino-Southern Oscillation; La Nina; monsoon; sea surface temperature; storm track; summer; tropical cyclone; Pacific Ocean; Pacific Ocean (North); Philippine Sea; South China Sea
语种	英语
来源期刊	Journal of Climate
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/171154
作者单位	Departamento de Sistemas Físicos, Químicos y Naturales, Universidad Pablo de Olavide, Sevilla, Spain
推荐引用方式 GB/T 7714	Vega I.,Ribera P.,Gallego D.. Characteristics of the onset; withdrawal; and breaks of the western North Pacific summer monsoon in the 1949–2014 period[J],2020,33(17).
APA	Vega I.,Ribera P.,&Gallego D..(2020).Characteristics of the onset; withdrawal; and breaks of the western North Pacific summer monsoon in the 1949–2014 period.Journal of Climate,33(17).
MLA	Vega I.,et al."Characteristics of the onset; withdrawal; and breaks of the western North Pacific summer monsoon in the 1949–2014 period".Journal of Climate 33.17(2020).