DOI: 10.1002/2016GL067925
论文题名: The signature of low-frequency oceanic forcing in the Atlantic Multidecadal Oscillation
作者: O'Reilly C.H. ; Huber M. ; Woollings T. ; Zanna L.
刊名: Geophysical Research Letters
ISSN: 0094-9181
EISSN: 1944-8912
出版年: 2016
卷: 43, 期: 6 起始页码: 2810
结束页码: 2818
语种: 英语
英文关键词: Atlantic Multidecadal Oscillation
; CMIP models
; Ocean circulation variability
; Turbulent heat flux
Scopus关键词: Atmospheric temperature
; Climate models
; Heat flux
; Stochastic models
; Stochastic systems
; Surface waters
; Atlantic meridional overturning circulations
; Atlantic multidecadal oscillations
; Coupled climate model
; Fully-coupled model
; Multidecadal variability
; Ocean circulation
; Sea surface temperatures
; Turbulent heat fluxes
; Oceanography
; Atlantic Multidecadal Oscillation
; atmosphere-ocean coupling
; circulation modeling
; climate forcing
; climate modeling
; frequency analysis
; heat flux
; sea surface temperature
; stochasticity
; temperature anomaly
; turbulence
; turbulent flow
; Atlantic Ocean
; Atlantic Ocean (North)
英文摘要: The Atlantic Multidecadal Oscillation (AMO) significantly influences the climate of the surrounding continents and has previously been attributed to variations in the Atlantic Meridional Overturning Circulation. Recently, however, similar multidecadal variability was reported in climate models without ocean circulation variability. We analyze the relationship between turbulent heat fluxes and sea surface temperatures (SSTs) over the midlatitude North Atlantic in observations and coupled climate model simulations, both with and without ocean circulation variability. SST anomalies associated with the AMO are positively correlated with heat fluxes on decadal time scales in both observations and models with varying ocean circulation, whereas in models without ocean circulation variability the anomalies are negatively correlated when heat flux anomalies lead. These relationships are captured in a simple stochastic model and rely crucially on low-frequency forcing of SST. The fully coupled models that better capture this signature more effectively reproduce the observed impact of the AMO on European summertime temperatures. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84977974512&doi=10.1002%2f2016GL067925&partnerID=40&md5=ef2b1df82cc8bd16d00e56efad69559c
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10144
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Atmospheric, Oceanic and Planetary Physics, Department of Physics, University of Oxford, Oxford, United Kingdom
Recommended Citation:
O'Reilly C.H.,Huber M.,Woollings T.,et al. The signature of low-frequency oceanic forcing in the Atlantic Multidecadal Oscillation[J]. Geophysical Research Letters,2016-01-01,43(6).