气候变化领域集成服务门户(CCPortal): Subannual to interannual variabilities of SST in the North Atlantic Ocean

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DOI	10.2196/10.1175/JCLI-D-19-0556.1
	Subannual to interannual variabilities of SST in the North Atlantic Ocean
	Li X.; Hu Z.-Z.; Huang B.
发表日期	2020
ISSN	0894-8755
起始页码	5547
结束页码	5564
卷号	33 期号:3
英文摘要	Based on observational data, this work examines the multi-time-scale feature of the sea surface temperature (SST) variability averaged in the whole North Atlantic Ocean (to be referred to as NASST), as well as its time-scale-dependent connections with El Niño-Southern Oscillation (ENSO) and the North Atlantic Oscillation (NAO). Traditionally, the NASST index is used to characterize the SST trend and multidecadal variability in the North Atlantic. This study found that superimposed on a prominent long-term trend, NASST is nonnegligible at subannual and interannual time scales, compared with that at decadal to multidecadal time scales. Spatially, the interannual variation of NASST is characterized by a horseshoe-like pattern of the SST anomaly (SSTA) in the North Atlantic. It is mainly a lagged response to ENSO through the atmospheric bridge, and NAO plays a secondary role. At the subannual time scale, both ENSO and NAO play a role in generating the fluctuations of NASST and a horseshoe-like pattern in the North Atlantic. Nevertheless, both the ENSO- and NAO-driven variations only explain a small fraction of the variances in both the interannual and subannual time scales. Thus, other factors unrelated to ENSO or NAO may play a more important role. The associated thermodynamical processes are similar at the two time scales; however, the dynamical processes have a significant contribution to the subannual component, but not to the interannual component. Thus, the SSTA averaged in the North Atlantic as a whole varies at different time scales and is associated with different mechanisms. © 2020 American Meteorological Society. All rights reserved.
英文关键词	Atmospheric pressure; Climatology; Surface waters; Time measurement; Interannual time scale; Interannual variability; Interannual variation; Multi-decadal time scale; Multidecadal variability; North Atlantic oscillations; Sea surface temperature (SST); Thermodynamical process; Oceanography; annual variation; climate variation; decadal variation; El Nino-Southern Oscillation; North Atlantic Oscillation; sea surface temperature; time dependent behavior; Atlantic Ocean; Atlantic Ocean (North)
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/171245
作者单位	Key Laboratory of Geoscience Big Data and Deep Resource of Zhejiang Province, School of Earth Sciences, Zhejiang University, Hangzhou, Zhejiang, China; Climate Prediction Center, NOAA/NWS/NCEP, College Park, MD, United States; Center for Ocean-Land-Atmosphere Studies, Department of Atmospheric Oceanic and Earth Sciences, College of Science, George Mason University, Fairfax, VA, United States
推荐引用方式 GB/T 7714	Li X.,Hu Z.-Z.,Huang B.. Subannual to interannual variabilities of SST in the North Atlantic Ocean[J],2020,33(3).
APA	Li X.,Hu Z.-Z.,&Huang B..(2020).Subannual to interannual variabilities of SST in the North Atlantic Ocean.Journal of Climate,33(3).
MLA	Li X.,et al."Subannual to interannual variabilities of SST in the North Atlantic Ocean".Journal of Climate 33.3(2020).