DOI: 10.1002/grl.50233
论文题名: Observed and simulated variability of the AMOC at 26°N and 41°N
作者: Mielke C. ; Frajka-Williams E. ; Baehr J.
刊名: Geophysical Research Letters
ISSN: 0094-9233
EISSN: 1944-8964
出版年: 2013
卷: 40, 期: 6 起始页码: 1159
结束页码: 1164
语种: 英语
英文关键词: AMOC
; North Atlantic
; Seasonal variability
Scopus关键词: AMOC
; Atlantic meridional overturning circulations
; Climate anomalies
; High resolution
; National centers for environmental predictions
; North Atlantic
; Rapid climate change
; Seasonal variability
; Climate change
; Computer simulation
; Time series
; Oceanography
; climate change
; Ekman layer
; numerical model
; observational method
; resolution
; seasonal variation
; time series analysis
; timescale
; Atlantic Ocean
; Atlantic Ocean (North)
英文摘要: Time series of the observational estimate of the Atlantic meridional overturning circulation (AMOC) have recently become available, but so far, no contemporaneous relation has been documented between them. Here, we analyze the variability of the 26°N Rapid Climate Change programme (RAPID) and the 41°N Argo-based AMOC estimates on seasonal timescales, and we compare them to a simulation from a high-resolution National Centers for Environmental Prediction (NCEP)-forced ocean model. In our analysis of the observed time series, we find that the seasonal cycles of the non-Ekman component of the AMOC between 26°N and 41°N are 180-degrees out-of-phase. Removing the mean seasonal cycle from each time series, the residuals have a non-stationary covariability. Our results demonstrate that the AMOC is meridionally covariable between 26°N and 41°N at seasonal timescales. We find the same covariability in the model, although the phasing differs from the observed phasing. This may offer the possibility of inferring AMOC variations and associated climate anomalies throughout the North Atlantic from discontinuous observations. Key Points First joint analysis of observed and modeled Atlantic overturning timeseries Find meridional coherence at seasonal timescales Find non-stationary covariability after removing the mean seasonal cycle. ©2013 American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84876908954&doi=10.1002%2fgrl.50233&partnerID=40&md5=b10bff27f4e3db5bb0017c049d724c35
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6497
Appears in Collections: 气候减缓与适应
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作者单位: Institute of Oceanography, University of Hamburg, Bundesstrasse 53, 20146 Hamburg, Germany
Recommended Citation:
Mielke C.,Frajka-Williams E.,Baehr J.. Observed and simulated variability of the AMOC at 26°N and 41°N[J]. Geophysical Research Letters,2013-01-01,40(6).