气候变化领域集成服务门户(CCPortal): Impacts of the atlantic multidecadal oscillation on the relationship of the spring arctic oscillation and the following east asian summer monsoon

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DOI	10.1175/JCLI-D-19-0978.1
	Impacts of the atlantic multidecadal oscillation on the relationship of the spring arctic oscillation and the following east asian summer monsoon
	Chen S.; Chen W.; Wu R.; Song L.
发表日期	2020
ISSN	0894-8755
起始页码	6651
结束页码	6672
卷号	33 期号:15
英文摘要	Previous studies indicated that spring Arctic Oscillation (AO) can influence the following East Asian summer monsoon (EASM). This study reveals that the Atlantic multidecadal oscillation (AMO) has a pronounced modulation of the spring AO-EASM connection. Spring AO has a close relation with the EASM during the negative AMO (2AMO) phase. However, during the positive AMO (1AMO) phase, the spring AO-EASM connection is weak. During the 2AMO phase, a marked dipole atmospheric anomaly pattern (with an anticyclonic anomaly over the midlatitudes and a cyclonic anomaly over the subtropics) and a pronounced tripole sea surface temperature (SST) anomaly pattern is formed in the North Pacific during positive spring AO years. The cyclonic anomaly, SST, and precipitation anomalies over the subtropical western North Pacific (WNP) maintain and propagate southwestward in the following summer via a positive air-sea feedback, which further impacts the EASM variation. During the 1AMO phase, the Pacific center of the spring AO (i.e., the anticyclonic anomaly over the midlatitudes) is weak. As such, the cyclonic anomaly cannot be induced over the subtropical WNP by the spring AO via wave-mean flow interaction. Hence, the spring AO-EASM connection disappears during the 1AMO phase. The AMO impacts the Pacific center of the spring AO via modulating the Aleutian low intensity and North Pacific storm track intensity. The observed AMO modulation of the spring AO-EASM connection and Pacific center of the spring AO can be captured by the long historical simulation in a coupled global climate model. © 2020 American Meteorological Society. All rights reserved.
英文关键词	Atmospheric thermodynamics; Climate models; Modulation; Surface waters; Tropics; Anticyclonic anomalies; Atlantic multidecadal oscillations; Coupled global climate model; East Asian summer monsoon; Precipitation anomalies; Sea surface temperature anomalies; Wave-mean-flow interaction; Western North Pacific; Oceanography; Arctic Oscillation; Atlantic Multidecadal Oscillation; climate modeling; decadal variation; monsoon; precipitation (climatology); sea surface temperature; storm track; summer
语种	英语
来源期刊	Journal of Climate
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/171237
作者单位	Center for Monsoon System Research, Institute of Atmospheric Physics, And University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing, China; School of Earth Sciences, Zhejiang University, Hangzhou, China; Institute of Urban Meteorology, China Meteorological Administration, Beijing, China; Center for Monsoon System Research, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China
推荐引用方式 GB/T 7714	Chen S.,Chen W.,Wu R.,et al. Impacts of the atlantic multidecadal oscillation on the relationship of the spring arctic oscillation and the following east asian summer monsoon[J],2020,33(15).
APA	Chen S.,Chen W.,Wu R.,&Song L..(2020).Impacts of the atlantic multidecadal oscillation on the relationship of the spring arctic oscillation and the following east asian summer monsoon.Journal of Climate,33(15).
MLA	Chen S.,et al."Impacts of the atlantic multidecadal oscillation on the relationship of the spring arctic oscillation and the following east asian summer monsoon".Journal of Climate 33.15(2020).