DOI: 10.1175/JCLI-D-17-0820.1
Scopus记录号: 2-s2.0-85059635559
论文题名: Recent breakdown of the seasonal linkage between the winter North Atlantic Oscillation/northern annular mode and summer northern annular mode
作者: Yamazaki K. ; Ogi M. ; Tachibana Y. ; Nakamur T. ; Oshima K.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2019
卷: 32, 期: 2 起始页码: 591
结束页码: 605
语种: 英语
英文关键词: Arctic Oscillation
; Atmosphere-ocean interaction
; Climate prediction
; Decadal variability
; North Atlantic Oscillation
; Stratosphere-troposphere coupling
Scopus关键词: Atmospheric movements
; Atmospheric pressure
; Atmospheric thermodynamics
; Climatology
; Ozone layer
; Sea ice
; Surface waters
; Arctic Oscillation
; Atmosphere-ocean interactions
; Climate prediction
; Decadal variability
; North Atlantic oscillations
; Stratosphere-troposphere coupling
; Oceanography
; air-sea interaction
; annual variation
; Arctic Oscillation
; climate prediction
; decadal variation
; North Atlantic Oscillation
; seasonal variation
; stratosphere-troposphere interaction
; Atlantic Ocean
; Atlantic Ocean (North)
英文摘要: The summer northern annular mode (NAM) and the winter North Atlantic Oscillation (NAO)/winter NAM have a positive correlation from the mid-1960s to the 1980s. Namely, when the winter NAO/NAM is in a positive phase, the following summer NAM tended to be in a positive phase. During the period from the mid-1960s to the 1980s, the NAO/NAM signals extended to the stratosphere in winter. Also, the lowertropospheric warm anomaly over northern Eurasia in winter associated with the positive phase ofNAO/NAM continued into spring. In summer, the annular anomalies in the temperature and 500-hPa height fields appeared, and the high-latitude westerly wind was enhanced following the winter positive NAO/NAM. However, after circa 1990, the seasonal linkage was broken (i.e., the winter-to-summer correlation became insignificant). The stratospheric signal in the winter NAO/NAM became weak and summer signals associated with the winter NAO/NAM almost disappeared. Seasonal evolutions of atmospheric circulation and sea surface temperature (SST) anomalies associated with the winterNAOare examined for an early good-linkage period and a recent poor-linkage period. We discuss the possible causes of the linkage breakdown such as stratospheric ozone, North Atlantic SST, and Atlantic multidecadal oscillation, besides chaotic internal variability in the climate system. Simulations with the Community Earth System Model suggest that the ocean and/or sea ice with interseasonal memories possibly cause the linkage, besides large internal variability through which the linkage can take place by chance. © 2018 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/117248
Appears in Collections: 气候变化与战略
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Recommended Citation:
Yamazaki K.,Ogi M.,Tachibana Y.,et al. Recent breakdown of the seasonal linkage between the winter North Atlantic Oscillation/northern annular mode and summer northern annular mode[J]. Journal of Climate,2019-01-01,32(2)