气候变化领域集成服务门户(CCPortal): An inter-basin teleconnection from the North Atlantic to the subarctic North Pacific at multidecadal time scales

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DOI	10.1007/s00382-019-05031-5
	An inter-basin teleconnection from the North Atlantic to the subarctic North Pacific at multidecadal time scales
	Gong Z.; Sun C.; Li J.; Feng J.; Xie F.; Ding R.; Yang Y.; Xue J.
发表日期	2020
ISSN	0930-7575
起始页码	807
结束页码	822
卷号	54 期号:2020-01-02
英文摘要	Observational evidence suggests that the sub-arctic North Pacific (SANP; 45°–60° N, 155° E–165° W) sea surface temperature (SST) shows pronounced multidecadal variability, which cannot be explained by the Pacific Decadal Oscillation (PDO). Here, we find that the SANP SST multidecadal variability is closely linked to the remote Atlantic Multidecadal Oscillation (AMO), indicating a multidecadal inter-basin teleconnection. The teleconnection can be well reproduced in a set of Atlantic Pacemaker experiments. An atmospheric bridge mechanism for the teleconnection is proposed by analyzing both observations and simulation data. The AMO warm phase generates anomalous ascent and upper-level divergence over the North Atlantic. The upper-level outflows converge towards the subarctic North Pacific, leading to compensating subsidence along with anomalous high pressure there. The enhanced adiabatic descent causes anomalous warming and moistening of the lower troposphere above the SANP basin and increases the downwelling longwave radiation. The warming of the SANP SST is further induced and amplified due to water vapor-longwave radiation-SST positive feedback. The anomalous high also weakens the climatological cyclonic flow of Aleutian low and suppresses the turbulent heat release from ocean to atmosphere, contributing to the SANP SST warming. Our findings suggest that the AMO plays a crucial role in the subarctic North Pacific SST multidecadal variability. © 2019, Springer-Verlag GmbH Germany, part of Springer Nature.
英文关键词	Atlantic Multidecadal Oscillation; Inter-basin teleconnection; Multidecadal variability; Sub-arctic North Pacific
语种	英语
scopus关键词	Atlantic Multidecadal Oscillation; decadal variation; longwave radiation; Pacific Decadal Oscillation; sea surface temperature; teleconnection; timescale; water vapor; Atlantic Ocean; Atlantic Ocean (North); Pacific Ocean; Pacific Ocean (North)
来源期刊	Climate Dynamics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/145727
作者单位	College of Global Change and Earth System Science (GCESS), Beijing Normal University, Beijing, 100875, China; State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou, China; Key Laboratory of Physical Oceanography-Institute for Advanced Ocean Studies, Ocean University of China and Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266100, China; State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; Key Laboratory of Meteorological Disaster of Ministry of Education/ Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters/ Institute for Climate and Application Research (ICAR), Nanjing University of Information Science and Technology, Nanjing, 210044, China
推荐引用方式 GB/T 7714	Gong Z.,Sun C.,Li J.,et al. An inter-basin teleconnection from the North Atlantic to the subarctic North Pacific at multidecadal time scales[J],2020,54(2020-01-02).
APA	Gong Z..,Sun C..,Li J..,Feng J..,Xie F..,...&Xue J..(2020).An inter-basin teleconnection from the North Atlantic to the subarctic North Pacific at multidecadal time scales.Climate Dynamics,54(2020-01-02).
MLA	Gong Z.,et al."An inter-basin teleconnection from the North Atlantic to the subarctic North Pacific at multidecadal time scales".Climate Dynamics 54.2020-01-02(2020).