气候变化领域集成服务门户(CCPortal): Emerging Pacific Quasi-Decadal Oscillation Over the Past 70 Years

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DOI	10.1029/2020GL090851
	Emerging Pacific Quasi-Decadal Oscillation Over the Past 70 Years
	Chunhan J.; Bin W.; Jian L.
发表日期	2021
ISSN	0094-8276
卷号	48 期号:2
英文摘要	Quasi-decadal variation in various Pacific regions has been recognized for decades but its spatial-temporal characteristics and generation mechanisms remain poorly understood. Here we show that the sea surface temperature (SST) in the equatorial central Pacific (ECP) exhibits a prominent 11-year periodicity since 1951 but not before. An episodic-like quasi-decadal warm event is initiated in a northeast-southwest tilted belt from the United States' west coast to the ECP. The initial development involves positive feedback between atmospheric heating-induced Rossby waves and underlying SST in the tropical North Pacific. The amplification of ECP warming is primarily due to equatorward heat advection and deepening thermocline, while the zonal advective feedback mainly controls its decay. The quasi-decadal oscillation (QDO) tends to follow the 11-years solar cycle with a 1-to-2-year phase delay, meanwhile, it possibly links to the nonlinear behavior of ENSO. The cause of intensification of the QDO over the past 70 years, however, remains elusive. © 2020 The Authors.
英文关键词	Climatology; Mechanical waves; Oceanography; Solar energy; Surface waters; Atmospheric heating; Decadal variations; Generation mechanism; Initial development; Nonlinear behavior; Quasi-decadal oscillation; Sea surface temperature (SST); Spatial-temporal characteristics; Feedback
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/169205
作者单位	Key Laboratory for Virtual Geographic Environment of Ministry of Education/State Key Laboratory Cultivation Base of Geographical Environment Evolution of Jiangsu Province and Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, School of Geography Science, Nanjing Normal University, Nanjing, China; Department of Atmospheric Sciences and International Pacific Research Center, School of Ocean and Earth Science and Technology, University of Hawaii at Manoa, Honolulu, HI, United States; Earth System Modeling Center, Nanjing University of Information Science and Technology, Nanjing, China; School of Mathematical Science, Jiangsu Provincial Key Laboratory for Numerical Simulation of Large Scale Complex Systems, Nanjing Normal University, Nanjing, China
推荐引用方式 GB/T 7714	Chunhan J.,Bin W.,Jian L.. Emerging Pacific Quasi-Decadal Oscillation Over the Past 70 Years[J],2021,48(2).
APA	Chunhan J.,Bin W.,&Jian L..(2021).Emerging Pacific Quasi-Decadal Oscillation Over the Past 70 Years.Geophysical Research Letters,48(2).
MLA	Chunhan J.,et al."Emerging Pacific Quasi-Decadal Oscillation Over the Past 70 Years".Geophysical Research Letters 48.2(2021).