气候变化领域集成服务门户(CCPortal): Swapping of the Pacific and Atlantic Niño influences on north central India summer monsoon

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DOI	10.1007/s00382-020-05215-4
	Swapping of the Pacific and Atlantic Niño influences on north central India summer monsoon
	Yadav R.K.; Wang S.-Y.S.; Wu C.-H.; Gillies R.R.
发表日期	2020
ISSN	0930-7575
起始页码	4005
结束页码	4020
卷号	54
英文摘要	The highly populated north central India receives 90% of annual rainfall during June to September. The interannual variation of summer monsoon rainfall is less studied compared to central and western India, due to its weak signal with the El-Niño-Southern Oscillation (ENSO). Previous studies have reported a marked decadal variation in the ENSO influences on north India rainfall, but the teleconnections of this variation are not satisfactorily understood. A pathway of the changing ENSO influences on north central India rainfall is revealed from observational data analysis and numerical experiments. While La Niña-like conditions produce anomalous northeasterly wind over India and reduce the tropospheric wind shear, the emergence of the Atlantic Niño appears to overtake this ENSO influence. The Atlantic Niño intensifies the meridional stationary wave affecting pressure anomaly over northwest Europe. This excites the Eurasian Rossby wave train along the mid-latitude producing upper-troposphere high pressure anomaly, subsequently affecting north India. Future work should examine the extent to which these teleconnections are represented in climate forecast models to aid the seasonal prediction of north central India rainfall. © 2020, Springer-Verlag GmbH Germany, part of Springer Nature.
英文关键词	Atlantic Niño Deep convection Sea surface temperature; ENSO; Indian summer monsoon; North India; Pressure anomaly
语种	英语
scopus关键词	annual variation; El Nino-Southern Oscillation; monsoon; rainfall; Rossby wave; summer; teleconnection; troposphere; wind shear; Atlantic Ocean; India; Pacific Ocean
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/145489
作者单位	Plants, Soils and Climate Department, Utah State University, Logan, UT, United States; Utah Climate Center, Utah State University, Logan, UT, United States; Indian Institute of Tropical Meteorology, Pashan, Pune, 411008, India; Research Center for Environmental Changes, Academia Sinica, Taibei, Taiwan
推荐引用方式 GB/T 7714	Yadav R.K.,Wang S.-Y.S.,Wu C.-H.,et al. Swapping of the Pacific and Atlantic Niño influences on north central India summer monsoon[J],2020,54.
APA	Yadav R.K.,Wang S.-Y.S.,Wu C.-H.,&Gillies R.R..(2020).Swapping of the Pacific and Atlantic Niño influences on north central India summer monsoon.Climate Dynamics,54.
MLA	Yadav R.K.,et al."Swapping of the Pacific and Atlantic Niño influences on north central India summer monsoon".Climate Dynamics 54(2020).