气候变化领域集成服务门户(CCPortal): Boreal Spring El Niño Convective State and Its Impact on Monsoon Onset

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DOI	10.1029/2020GL090136
	Boreal Spring El Niño Convective State and Its Impact on Monsoon Onset
	Neena J.M.; Suhas E.; Murtugudde R.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:22
英文摘要	A lesser known relationship between boreal spring El Niño state and the Indian summer monsoon (ISM) is explored, considering the differences in the evolution of sea surface temperature and convection over the Pacific. Rossby wave tracing analysis reveals that the boreal spring El Niño convective state permits two distinct eastward waveguides from the central Pacific to the ISM domain. The first waveguide reaches the northern Indian region roughly along the African-Asian jet, and the second waveguide crosses over to the Southern Hemisphere over the eastern Pacific and extends up to the south Indian Ocean region. The net result is an altered free tropospheric temperature distribution over the ISM domain in the month of May leading to a delayed monsoon onset. The existence of the two waveguides and the modulation of monsoon onset makes the boreal spring El Niño state an important component to be accounted for in ISM prediction. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Mechanical waves; Oceanography; Surface waters; Waveguides; Boreal Spring; Eastern pacific; Indian summer monsoon; Monsoon onset; Sea surface temperature (SST); South Indian Ocean; Southern Hemisphere; Tropospheric temperature; Atmospheric thermodynamics; air-sea interaction; convection; El Nino; monsoon; Rossby wave; sea surface temperature; Southern Oscillation; spring (season); troposphere; Indian Ocean; Pacific Ocean; Pacific Ocean (East); Trachinotus falcatus
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169388
作者单位	Earth and Climate Science, Indian Institute of Science Education and Research Pune, Pune, India; Earth System Science Interdisciplinary Center, University of MarylandMD, United States
推荐引用方式 GB/T 7714	Neena J.M.,Suhas E.,Murtugudde R.. Boreal Spring El Niño Convective State and Its Impact on Monsoon Onset[J],2020,47(22).
APA	Neena J.M.,Suhas E.,&Murtugudde R..(2020).Boreal Spring El Niño Convective State and Its Impact on Monsoon Onset.Geophysical Research Letters,47(22).
MLA	Neena J.M.,et al."Boreal Spring El Niño Convective State and Its Impact on Monsoon Onset".Geophysical Research Letters 47.22(2020).