气候变化领域集成服务门户(CCPortal): Influence of subtropical circulation systems on the changing El Niño-Indian summer monsoon relationship

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DOI	10.1016/j.atmosres.2021.105457
	Influence of subtropical circulation systems on the changing El Niño-Indian summer monsoon relationship
	Wilson S.S.; Mohanakumar K.
发表日期	2021
ISSN	0169-8095
卷号	252
英文摘要	Remote factors have a significant influence on the variability of Indian summer monsoon rainfall. The study investigates atmospheric conditions influenced by the El Niño episodes on the variable summer monsoon over India. Four composites of years were selected based on the occurrence / non-occurrence of El Niño and extreme monsoons over India. This study examines the upper tropospheric and lower tropospheric wind patterns, tropospheric temperature, and velocity potential for 1958 to 2019 using Japanese Reanalysis 55 (JRA 55) data. The regional meridional circulation established by the north-south pressure gradient is more susceptible to the monsoon condition over the Indian Subcontinent than the external factors. The spatial variability and intensity of Australian High in the southern hemisphere play a prominent role in the Indian summer monsoon characteristics. Subtropical circulations in both hemispheres influence monsoon conditions over India irrespective of El Niño condition. The tropical zonal circulation has appeared to be modulated by the El Niño Southern Oscillation (ENSO) condition over the tropical Pacific Ocean, thereby modify the monsoon circulation. © 2021 Elsevier B.V.
英文关键词	Atmospheric circulation; Australian High; El Niño; Indian summer monsoon
来源期刊	Atmospheric Research
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/236875
作者单位	Department of Atmospheric Sciences, Cochin University of Science and Technology, Ernakulam, 682016, India; Advanced Centre for Atmospheric Radar Research, Cochin University of Science and Technology, Ernakulam, 682022, India
推荐引用方式 GB/T 7714	Wilson S.S.,Mohanakumar K.. Influence of subtropical circulation systems on the changing El Niño-Indian summer monsoon relationship[J],2021,252.
APA	Wilson S.S.,&Mohanakumar K..(2021).Influence of subtropical circulation systems on the changing El Niño-Indian summer monsoon relationship.Atmospheric Research,252.
MLA	Wilson S.S.,et al."Influence of subtropical circulation systems on the changing El Niño-Indian summer monsoon relationship".Atmospheric Research 252(2021).