The relationship between the East Asian Summer Monsoon and El Nino-Southern Oscillation revealed by reconstructions and a control simulation for millennium

doi:10.1016/j.quaint.2018.06.024

	The relationship between the East Asian Summer Monsoon and El Nino-Southern Oscillation revealed by reconstructions and a control simulation for millennium
	Zhang, Xuezhen 1,2; Wu, Maowei 1,2; Liu, Yang 1,2; Hao, Zhixin 1,2; Zheng, Jingyun 1,2
刊名	QUATERNARY INTERNATIONAL
	2018-11-10
卷号	493 页码:106-113
关键词	Relationship East Asian Summer Monsoon (EASM) El Nitio-Southern Oscillation (ENSO) Reconstruction CESM control simulation Millennium
ISSN号	1040-6182
DOI	10.1016/j.quaint.2018.06.024
通讯作者	Zheng, Jingyun(zhengjy@igsnrr.ac.cn)
英文摘要	Proxy-based reconstructions of the Asian Summer Monsoon exhibit variability over multiple scales, from inter annual to centennial. The relationship between East Asia Summer Monsoon (EASM) variability and the El Nino Southern Oscillation (ENSO) over the last millennium remains unclear and a focus of current research. This study investigates this relationship using observations, reanalysis data, proxy-based reconstructions, and a control simulation using the Community Earth System Model (CESM). The results derived from both the observation/reanalysis/proxy-based reconstruction and the simulation show consistently that the relationship between EASM strength and Nifio3.4 SST is divergent. The observation/reanalysis data illustrate strong negative correlations between Nifio3.4 SST and EASM strength at an annual scale in the 1920s-1930s and 1980s-1990s, with weak correlations during other periods. The proxy-based reconstruction demonstrates strong negative correlations at inter-decadal scales from the 1360s to the 1530s, with either weak correlations or positive correlations during other periods. Moreover, the simulations reveal positive correlations in some periods and negative or weak correlations in other periods. The simulations demonstrate that the divergent relationship may be derived from multi-decadal variations in Pacific SST caused by internal variability in the climate system, likely due to the Inter-decadal Pacific Oscillation (IPO). The EASM variation is usually in (out of) phase with Nifio3.4 SST during the positive (negative) phase of the IPO. In the positive phase of the IPO, there is a tripolar pattern expressed in a cyclone-anticyclone-cyclone arrangement at pressure level of 850 hPa from the tropics to mid-latitudes over the northwest Pacific. Warming of the Nifio3.4 strengthens the tropical cyclone by weakening the trade winds and subsequently strengthening the subtropical anticyclone, leading to a strong Meiyu front, which suggests a strong EASM. However, in the negative phase of the IPO, a huge cyclone occupies the northwest Pacific. Warming of the Nifio3.4 strengthens the cyclone by weakening the trade winds, which leads to a weak Meiyu front, which suggests a weak EASM. These results may be helpful in further understanding the mechanisms through which the ENSO and IPO impact the atmospheric circulations in the Asian Pacific, especially regarding the long-term variations in EASM at inter-annual to inter-decadal scales.
资助项目	National Key Research and Development Program of China[2016YFA0600401] ; National Natural Science Foundation of China[41430528] ; National Natural Science Foundation of China[41471171] ; Youth Innovation Promotion Association CAS[2015038] ; Kezhen Outstanding Young Scholars from IGSNRR[2015RC101]
WOS关键词	LAST MILLENNIUM ; PACIFIC CLIMATE ; ENSO ; RECORD ; VARIABILITY ; CHINA ; MODEL ; CAVE
WOS研究方向	Physical Geography ; Geology
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000447489200011
资助机构	National Key Research and Development Program of China ; National Natural Science Foundation of China ; Youth Innovation Promotion Association CAS ; Kezhen Outstanding Young Scholars from IGSNRR
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/52757]
专题	中国科学院地理科学与资源研究所
通讯作者	Zheng, Jingyun
作者单位	1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Xuezhen,Wu, Maowei,Liu, Yang,et al. The relationship between the East Asian Summer Monsoon and El Nino-Southern Oscillation revealed by reconstructions and a control simulation for millennium[J]. QUATERNARY INTERNATIONAL,2018,493:106-113.
APA	Zhang, Xuezhen,Wu, Maowei,Liu, Yang,Hao, Zhixin,&Zheng, Jingyun.(2018).The relationship between the East Asian Summer Monsoon and El Nino-Southern Oscillation revealed by reconstructions and a control simulation for millennium.QUATERNARY INTERNATIONAL,493,106-113.
MLA	Zhang, Xuezhen,et al."The relationship between the East Asian Summer Monsoon and El Nino-Southern Oscillation revealed by reconstructions and a control simulation for millennium".QUATERNARY INTERNATIONAL 493(2018):106-113.