气候变化领域集成服务门户(CCPortal): Changing dynamical control of early Asian summer monsoon in the mid-1990s

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DOI	10.1007/s00382-019-04989-6
	Changing dynamical control of early Asian summer monsoon in the mid-1990s
	Wu C.-H.; Tsai P.-C.; Freychet N.
发表日期	2020
ISSN	0930-7575
起始页码	85
结束页码	98
卷号	54 期号:2020-01-02
英文摘要	The seasonal evolution of the upper tropospheric South Asian high follows and influences underlying summer monsoon advancement. A strong connection between the South Asian high and westerly perturbation to the north suggests further planetary-scale dynamical control of the monsoon. In the mid-1990s, a clear location shift of the South Asian high in May–June was noted and was observed in fewer (more) frequencies of the high centers over the Indochina Peninsula (Iranian Plateau). Continental confinement of monsoonal circulation and precipitation was observed during 1995–2010, as opposed to larger-scale development in the Asia–Pacific region during 1979–1994. In view of early-summer monsoon evolution, a westward shifting and faster migration of the South Asian high may imply increased control of the midlatitude dynamics. By contrast, the convection over the tropical Western North Pacific (WNP) has an opposite and delayed contribution to monsoon advancement. After the mid-1990s than it had been previously, the midlatitude jet stream largely weakened over northern Africa and the East Asia–Pacific region, corresponding to an increase in the upper tropospheric geopotential heights north of the jet stream. Climate model experiments further reveal that the warming over Europe–Asia and temperature change in the North Atlantic can result in the change in midlatitude perturbations and the monsoon evolution in the mid-1990s, suggesting large-scale and dynamic impact on monsoon climatology. © 2019, Springer-Verlag GmbH Germany, part of Springer Nature.
英文关键词	Asian summer monsoon; Decadal change; Monsoon dynamics; Monsoon-midlatitude interaction; South Asian high
语种	英语
scopus关键词	climate modeling; decadal variation; geopotential; jet stream; midlatitude environment; monsoon; summer; Pacific Ocean; Pacific Ocean (North)
来源期刊	Climate Dynamics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/145783
作者单位	Research Center for Environmental Changes, Academia Sinica, 128 Academia Road, Section 2, Nankang, Taipei 115, Taiwan; School of Geosciences, University of Edinburgh, Edinburgh, United Kingdom
推荐引用方式 GB/T 7714	Wu C.-H.,Tsai P.-C.,Freychet N.. Changing dynamical control of early Asian summer monsoon in the mid-1990s[J],2020,54(2020-01-02).
APA	Wu C.-H.,Tsai P.-C.,&Freychet N..(2020).Changing dynamical control of early Asian summer monsoon in the mid-1990s.Climate Dynamics,54(2020-01-02).
MLA	Wu C.-H.,et al."Changing dynamical control of early Asian summer monsoon in the mid-1990s".Climate Dynamics 54.2020-01-02(2020).