Wind-forced equatorial wave dynamics of the Pacific Ocean during 2014/2015 and 2015/2016 E1 Ni?o events

IOCAS-IR

	Wind-forced equatorial wave dynamics of the Pacific Ocean during 2014/2015 and 2015/2016 E1 Ni?o events
	WANG Jing; YUAN Dongliang; XU Tengfei ; ZHAO Xia
发表期刊	Journal of Oceanology and Limnology
ISSN	2096-5508
	2020-07-15
出版年	2020
卷号	v.38 期号:04 页码:228-242
文献类型	CNKI期刊论文
摘要	The equatorial wave dynamics of interannual sea level variations between 2014/2015 and2015/2016 El Nino events are compared using the Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics,Institute of Atmospheric Physics Climate Ocean Model(LICOM) forced by the National Centers for Environmental Prediction(NCEP) reanalysis I wind stre s s and heat flux during 2000-2015.In addition,the LICOM can reproduce the interannual variability of sea surface temperature anomalies(SSTA) and sea level anomalies(SLA) along the equator over the Pacific Ocean in comparison with the Hadley center and altimetric data well.We extracted the equatorial wave coefficients of LICOM simulation to get the contribution to SLA by multiplying the meridional wave structure.During 2014/2015 El Nino event,upwelling equatorial Kelvin waves from the western boundary in April2014 reach the eastern Pacific Ocean,which weakened SLA in the eastern Pacific Ocean.However,no upwelling equatorial Kelvin waves from the western boundary of the Pacific Ocean could reach the eastern boundary during the 2015/2016 El Nino event.Linear wave model results also demonstrate that upwelling equatorial Kelvin waves in both 2014/2015 and 2015/2016 from the western boundary can reach the eastern boundary.However,the contribution from stronger westerly anomalies forced downwelling equatorial Kelvin waves overwhelmed that from the upwelling equatorial Kelvin waves from the western boundary in 2015.Therefore,the western boundary reflection and weak westerly wind burst inhibited the growth of the 2014/2015 El Nino event.The disclosed equatorial wave dynamics are important to the simulation and prediction of ENSO events in future studies.
关键词	Pacific Ocean equatorial waves western boundary reflection El Ni?o
CNKI专辑号	A;
CNKI专辑名称	基础科学;
CNKI专题号	A009;A010;
CNKI专题名称	气象学;海洋学;
分类号	P732
收录类别	中科院核心 ; 中科院扩展
语种	英文;
资助项目(基金）	Supported by the National Key R&D Program of China (No.2019YFA0606702) ; the Strategic Priority Research Program of Chinese Academy of Sciences (No.XDB42000000) ; the National Natural Science Foundation of China (Nos.41776011,41421005,41720104008) ; the Chinese Academy of Sciences (Nos.XDA11010203,XDA11010301) ; the Shandong Provincial Projects (No.U1606402)
文献类型	CNKI期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/188107
专题	中国科学院海洋研究所
作者单位	1.CASKeyLaboratoryofOceanCirculationandWaves,InstituteofOceanology,ChineseAcademyofSciences 2.PilotNationalLaboratoryforMarineScienceandTechnology(Qingdao) 3.CenterforOceanMega-Science,ChineseAcademyofSciences 4.FirstInstituteofOceanography,MinistryofNaturalResources
推荐引用方式 GB/T 7714	WANG Jing,YUAN Dongliang,XU Tengfei,et al. Wind-forced equatorial wave dynamics of the Pacific Ocean during 2014/2015 and 2015/2016 E1 Ni?o events. 2020.