DOI: 10.1175/JCLI-D-16-0345.1
Scopus记录号: 2-s2.0-85028517230
论文题名: The dynamical influence of the Atlantic multidecadal oscillation on continental climate
作者: O'Reilly C.H. ; Woollings T. ; Zanna L.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2017
卷: 30, 期: 18 起始页码: 7213
结束页码: 7230
语种: 英语
Scopus关键词: Atmospheric temperature
; Climate models
; Climatology
; Meteorology
; Precipitation (chemical)
; Submarine geophysics
; Surface properties
; Surface waters
; Large scale motion
; Multidecadal variability
; North Atlantic Ocean
; Sea surface temperature (SST)
; Surface temperatures
; Oceanography
英文摘要: The Atlantic multidecadal oscillation (AMO) in sea surface temperature (SST) has been shown to influence the climate of the surrounding continents. However, it is unclear to what extent the observed impact of the AMO is related to the thermodynamical influence of the SST variability or the changes in large-scale atmospheric circulation. Here, an analog method is used to decompose the observed impact of the AMO into dynamical and residual components of surface air temperature (SAT) and precipitation over the adjacent continents. Over Europe the influence of the AMO is clearest during the summer, when the warm SAT anomalies are interpreted to be primarily thermodynamically driven by warm upstream SST anomalies but also amplified by the anomalous atmospheric circulation. The overall precipitation response to the AMO in summer is generally less significant than the SAT but is mostly dynamically driven. The decomposition is also applied to the North American summer and the Sahel rainy season. Both dynamical and residual influences on the anomalous precipitation over the Sahel are substantial, with the former dominating over the western Sahel region and the latter being largest over the eastern Sahel region. The results have potential implications for understanding the spread in AMO variability in coupled climate models and decadal prediction systems. © 2017 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/48716
Appears in Collections: 气候减缓与适应 气候变化与战略
There are no files associated with this item.
作者单位: Atmospheric, Oceanic and Planetary Physics, Department of Physics, University of Oxford, Oxford, United Kingdom
Recommended Citation:
O'Reilly C.H.,Woollings T.,Zanna L.. The dynamical influence of the Atlantic multidecadal oscillation on continental climate[J]. Journal of Climate,2017-01-01,30(18)