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	Role of the phase transition of intraseasonal oscillation on the south china sea summer monsoon onset
	Shao, Xie1,2; Huang, Ping1; Huang, Rong-Hui1
刊名	Climate dynamics
	2015-07-01
卷号	45期号:1-2页码:125-137
关键词	Intraseasonal oscillation (iso) South china sea summer monsoon (scssm) Monsoon onset
ISSN号	0930-7575
DOI	10.1007/s00382-014-2264-8
通讯作者	Huang, ping(huangping@mail.iap.ac.cn)
英文摘要	The present study investigates the role of intraseasonal oscillation (iso) on the south china sea (scs) summer monsoon onset based on the daily reanalysis data for a 33-year period from 1979 to 2011. the scs summer monsoon (scssm) onset always occurs during the developing phase of iso at which the iso develops from inactive convection and easterly anomalies to active convection and westerly anomalies. in the scssm onset season (april-july), the change rate of the zonal winds of iso over the scs is around twice as large as the increase rate of the climatological westerly winds. therefore, the monsoon onset, which is a process requiring the westerly winds to increase up to a certain threshold, only occurs during iso's developing phase. furthermore, the monsoon onsets tend to occur at the active (inactive) convection and developing phase of iso in the early (late) onset years. in the early-onset years, a strong active phase of iso is needed to prompt monsoon onset because of the undeveloped climatological easterly winds at the onset period, whereas in the late-onset years the developed climatological westerly winds will prompt the monsoon onset as long as the suppressive role of the inactive phase of iso starts relieving. due to the constraint of iso's developing phase on the scssm onset, an earlier iso's developing phase occurring in the monsoon onset season will induce an earlier scssm onset. the low-frequency variation, with a period greater than 90 days, can also modify the role of iso's developing phase, especially when the developing phase of iso occurs at the early season of the monsoon onset.
WOS关键词	WESTERN NORTH PACIFIC ; TROPICAL CYCLONE ACTIVITY ; COUPLED EQUATORIAL WAVES ; INTERANNUAL VARIABILITY ; EAST-ASIA ; MODULATION ; CLIMATOLOGY ; DEFINITION ; CONVECTION ; PREDICTION
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000354712500007
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2376564
专题	中国科学院大学
通讯作者	Huang, Ping
作者单位	1.Chinese Acad Sci, Ctr Monsoon Syst Res, Inst Atmospher Phys, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Shao, Xie,Huang, Ping,Huang, Rong-Hui. Role of the phase transition of intraseasonal oscillation on the south china sea summer monsoon onset[J]. Climate dynamics,2015,45(1-2):125-137.
APA	Shao, Xie,Huang, Ping,&Huang, Rong-Hui.(2015).Role of the phase transition of intraseasonal oscillation on the south china sea summer monsoon onset.Climate dynamics,45(1-2),125-137.
MLA	Shao, Xie,et al."Role of the phase transition of intraseasonal oscillation on the south china sea summer monsoon onset".Climate dynamics 45.1-2(2015):125-137.

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