DOI: 10.1002/2015GL065493
论文题名: Understanding the contrasting North Atlantic Oscillation anomalies of the winters of 2010 and 2014
作者: Rivière G. ; Drouard M.
刊名: Geophysical Research Letters
ISSN: 0094-8589
EISSN: 1944-8320
出版年: 2015
卷: 42, 期: 16 起始页码: 6868
结束页码: 6875
语种: 英语
英文关键词: North Atlantic Oscillation
; Rossby wave breaking
; storm track dynamics
; Synoptic wave trains
Scopus关键词: Atmospheric pressure
; Liquid waves
; Mechanical waves
; North American
; North Atlantic
; North Atlantic oscillations
; Quasi-geostrophic model
; Rossby wave
; Storm track
; Wave activity
; Wave train
; Oceanography
; anomaly
; data set
; jet
; North Atlantic Oscillation
; quasi-geostrophic flow
; Rossby number
; synoptic meteorology
; winter
; North America
; Pacific Ocean
; Pacific Ocean (North)
英文摘要: The present study investigates the two contrasting winters of 2010 and 2014 during which the North Atlantic Oscillation (NAO) was mainly negative and positive, respectively. In the North Pacific, contrasting anomalies were also present, with a straight zonal Pacific jet in 2010 and a strong poleward deviation of the Pacific jet in its exit region in 2014. Using reanalysis data sets and adopting a nonlinear initial-value approach with a quasi-geostrophic model, we show that the Pacific-North American anomalies are responsible for shaping synoptic wave trains propagating across North America. This in turn largely determines the nature of wave breaking and the synoptic eddy feedback onto the mean flow in the North Atlantic and finally the NAO phase. In such a proposed mechanism, synoptic wave activity forms the cornerstone of the dynamical relationship between the North Pacific and North Atlantic large-scale anomalies during the contrasting winters of 2010 and 2014. © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84941740580&doi=10.1002%2f2015GL065493&partnerID=40&md5=ba76aba985f47723b311a6f610e83f32
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8205
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: Laboratoire de Météorologie Dynamique/IPSL, ENS, CNRS, Paris, France
Recommended Citation:
Rivière G.,Drouard M.. Understanding the contrasting North Atlantic Oscillation anomalies of the winters of 2010 and 2014[J]. Geophysical Research Letters,2015-01-01,42(16).