Attenuation of Central Pacific El Nino Amplitude by North Pacific Sea Surface Temperature Anomalies

doi:10.1175/JCLI-D-19-0767.1

CORC > 深海科学与工程研究所 > 中国科学院深海科学与工程研究所 > 深海科学研究部 > 海洋环流观测与数值模拟研究室

	Attenuation of Central Pacific El Nino Amplitude by North Pacific Sea Surface Temperature Anomalies
	Xu, Kang 1,8,9; Tam, Chi-Yung 7; Liu, Boqi 5,6; Chen, Sheng 1,9; Yang, Xiaoyi 8; He, Zhuoqi 1,4,9; Xie, Qiang 2,3; Wang, Weiqiang 1,4,9
刊名	JOURNAL OF CLIMATE
	2020-08-01
卷号	33 期号:15 页码:6673-6688
ISSN号	0894-8755
DOI	10.1175/JCLI-D-19-0767.1
英文摘要	There exists a pronounced asymmetry between the amplitudes of central Pacific (CP) and eastern Pacific (EP) El Nino sea surface temperature anomalies (SSTA). The present study examines such an asymmetry and its relationship with the North Pacific SSTA. Results indicate that the weaker CP El Nino amplitude can be attributed to the weaker anomalous zonal wind response to the east-west equatorial SSTA gradient during its growing phase compared with EP El Nino. Furthermore, the occurrence of CP El Nino is closely associated with southwesterly surface wind anomalies in the subtropical North Pacific, as well as ocean warming reminiscent of the North Pacific Gyre Oscillation (NPGO) pattern in its vicinity. Both the observations as well as the pacemaker experiments with a coupled global climate model suggest that the anomalous low-level southwesterlies, induced by the North Pacific Oscillation (NPO)-like atmospheric variability, can enhance anomalously positive SST signals and extend them southwestward to the central equatorial Pacific via the wind-evaporation-SST feedback. This will further attenuate the atmospheric response to zonal SSTA gradient, and hence weaken the amplitude of CP El Nino. Therefore, anomalous low-level southwesterlies over the subtropical North Pacific can effectively act as a conduit for tropical-subtropical air-sea interaction in that region, and can play an important role in limiting the intensity of CP El Nino.
资助项目	NationalKeyR&DProgram of China[2019YFA0606701] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB420000000] ; Research Program of Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou)[GML2019ZD0306] ; National Natural Science Foundation of China[41776023] ; National Natural Science Foundation of China[91958202] ; National Natural Science Foundation of China[41731173] ; National Natural Science Foundation of China[41521005] ; National Natural Science Foundation of China[91858203] ; National Natural Science Foundation of China[41676015] ; Youth Innovation Promotion Association CAS[2020340] ; Rising Star Foundation of the SCSIO[NHXX2018WL0201] ; Innovation Academy of South China SeaEcology andEnvironmental Engineering, CAS[ISEE2018PY06] ; Chinese University Direct Grant[4053283] ; MEL Visiting Fellowship ; High Performance Computing Division
WOS研究方向	Meteorology & Atmospheric Sciences
语种	英语
出版者	AMER METEOROLOGICAL SOC
WOS记录号	WOS:000615097400020
资助机构	NationalKeyR&DProgram of China ; Strategic Priority Research Program of Chinese Academy of Sciences ; Research Program of Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou) ; National Natural Science Foundation of China ; Youth Innovation Promotion Association CAS ; Rising Star Foundation of the SCSIO ; Innovation Academy of South China SeaEcology andEnvironmental Engineering, CAS ; Chinese University Direct Grant ; MEL Visiting Fellowship ; High Performance Computing Division
内容类型	期刊论文
源URL	[http://ir.idsse.ac.cn/handle/183446/8356]
专题	深海科学研究部_海洋环流观测与数值模拟研究室
通讯作者	Wang, Weiqiang
作者单位	1.Southern Marine Sci & Engn Guangdong Lab Guangzho, Guangzhou, Peoples R China 2.Qingdao Natl Lab Marine Sci & Technol, Lab Reg Oceanog & Numer Modeling, Qingdao, Peoples R China 3.Chinese Acad Sci, Inst Deep Sea Sci & Engn, Sanya, Peoples R China 4.Chinese Acad Sci, Innovat Acad South China Sea Ecol & Environm Engn, Guangzhou, Peoples R China 5.Chinese Acad Meteorol Sci, Inst Climate Syst, Beijing, Peoples R China 6.Chinese Acad Meteorol Sci, State Key Lab Severe Weather, Beijing, Peoples R China 7.Chinese Univ Hong Kong, Earth Syst Sci Programme, Hong Kong, Peoples R China 8.Xiamen Univ, State Key Lab Marine Environm Sci, Xiamen, Peoples R China 9.Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou, Peoples R China
推荐引用方式 GB/T 7714	Xu, Kang,Tam, Chi-Yung,Liu, Boqi,et al. Attenuation of Central Pacific El Nino Amplitude by North Pacific Sea Surface Temperature Anomalies[J]. JOURNAL OF CLIMATE,2020,33(15):6673-6688.
APA	Xu, Kang.,Tam, Chi-Yung.,Liu, Boqi.,Chen, Sheng.,Yang, Xiaoyi.,...&Wang, Weiqiang.(2020).Attenuation of Central Pacific El Nino Amplitude by North Pacific Sea Surface Temperature Anomalies.JOURNAL OF CLIMATE,33(15),6673-6688.
MLA	Xu, Kang,et al."Attenuation of Central Pacific El Nino Amplitude by North Pacific Sea Surface Temperature Anomalies".JOURNAL OF CLIMATE 33.15(2020):6673-6688.