DOI: 10.1175/JCLI-D-17-0061.1
Scopus记录号: 2-s2.0-85047055221
论文题名: A multivariate estimate of the cold season atmospheric response to North Pacific SST variability
作者: Révelard A. ; Frankignoul C. ; Kwon Y.-O.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2018
卷: 31, 期: 7 起始页码: 2771
结束页码: 2796
语种: 英语
英文关键词: Atmosphere-ocean interaction
; Atmosphere-ocean interaction
; Boundary currents
; Empirical orthogonal functions
; Pacific decadal oscillation
; Regression analysis
Scopus关键词: Atmospheric thermodynamics
; Ocean currents
; Orthogonal functions
; Regression analysis
; Storms
; Atmosphere-ocean interactions
; Atmospheric circulation
; Atmospheric response
; Boundary currents
; Empirical Orthogonal Function
; Generalized equilibriums
; Multivariate approach
; Pacific decadal oscillation
; Heat flux
; air-sea interaction
; boundary current
; climate
; empirical orthogonal function analysis
; multivariate analysis
; Pacific Decadal Oscillation
; regression analysis
; sea surface temperature
; Pacific Ocean
; Pacific Ocean (North)
英文摘要: The Generalized Equilibrium Feedback Analysis (GEFA) is used to distinguish the influence of the Oyashio Extension (OE) and the Kuroshio Extension (KE) variability on the atmosphere from 1979 to 2014 from that of the main SST variability modes, using seasonal mean anomalies. Remote SST anomalies are associated with each single oceanic regressor, but the multivariate approach efficiently confines their SST footprints. In autumn [October-December (OND)], the OE meridional shifts are followed by a North Pacific Oscillation (NPO)-like signal. The OE influence is not investigated in winter [December-February (DJF)] because of multicollinearity, but a robust response with a strong signal over the Bering Sea is found in late winter/early spring [February-April (FMA)], a northeastward strengthening of the Aleutian low following a northward OE shift. A robust response to the KE variability is found in autumn, but not in winter and late winter when the KE SST footprint becomes increasingly small and noisy as regressors are added in GEFA. In autumn, a positive PDO is followed by a northward strengthening of the Aleutian low and a southward shift of the storm track in the central Pacific, reflecting the surface heat flux footprint in the central Pacific. In winter, the PDO shifts the maximum baroclinicity and storm track southward, the response strongly tilts westward with height in the North Pacific, and there is a negative NAO-like teleconnection. In late winter, the North Pacific NPO-like response to the PDO interferes negatively with the response to the OE and is only detected when the OE is represented in GEFA. A different PDO influence on the atmospheric circulation is found from 1958 to 1977. © 2018 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/111583
Appears in Collections: 气候减缓与适应
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作者单位: Sorbonne Université, LOCEAN/IPSL, Paris, France; Woods Hole Oceanographic Institution, Woods Hole, MA, United States
Recommended Citation:
Révelard A.,Frankignoul C.,Kwon Y.-O.. A multivariate estimate of the cold season atmospheric response to North Pacific SST variability[J]. Journal of Climate,2018-01-01,31(7)