DOI: 10.1007/s00382-017-3727-5
Scopus记录号: 2-s2.0-85019054191
论文题名: Interannual tropical Pacific sea surface temperature anomalies teleconnection to Northern Hemisphere atmosphere in November
作者: King M.P. ; Herceg-Bulić I. ; Kucharski F. ; Keenlyside N.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2018
卷: 50, 期: 2018-05-06 起始页码: 1881
结束页码: 1899
语种: 英语
英文关键词: Boreal autumn climate
; ENSO teleconnections
Scopus关键词: air-sea interaction
; atmospheric circulation
; autumn
; El Nino-Southern Oscillation
; general circulation model
; Northern Hemisphere
; sea surface temperature
; teleconnection
; temperature anomaly
; Atlantic Ocean
; Atlantic Ocean (East)
英文摘要: We investigate the Northern Hemisphere atmospheric circulation anomalies associated to the sea surface temperature (SST) anomalies that are related to the eastern-Pacific and central-Pacific El Nino-Southern Oscillations in the late autumn (November). This research is motivated by the need for improving understanding of the autumn climate conditions which can impact on winter climate, as well as the relative lack of study on the boreal autumn climate processes compared to winter. Using reanalysis and SST datasets available from the late nineteenth century through the recent years, we found that there are two major atmospheric responses; one is a hemispheric-wide wave number-4 pattern, another has a more annular pattern. Both of these project on the East Atlantic pattern (southward-shifted North Atlantic Oscillation) in the Atlantic sector. Which of the patterns is active is suggested to depend on the background mean flow, with the annular anomaly active in the most recent decades, while the wave-4 pattern in the decades before. This switch is associated with a change of correlation sign in the North Pacific. We discuss the robustness of this finding. The ability of two atmospheric general circulation models (ICTP-AGCM and ECHAM-AGCM) to reproduce the teleconnections is also examined. Evidence provided shows that the wave-4 pattern and the East Atlantic pattern signals can be reproduced by the models, while the shift from this to an annular response for the recent years is not found conclusively. © 2017, Springer-Verlag Berlin Heidelberg. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/109411
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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作者单位: Uni Research Climate, Nygårdsgaten 112, Bergen, 5008, Norway; Bjerknes Centre for Climate Research, Bergen, Norway; Department of Geophysics, Faculty of Science, University of Zagreb, Zagreb, Croatia; Earth System Physics, Abdus Salam International Centre for Theoretical Physics, Trieste, Italy; Geophysical Institute, University of Bergen, Bergen, Norway
Recommended Citation:
King M.P.,Herceg-Bulić I.,Kucharski F.,et al. Interannual tropical Pacific sea surface temperature anomalies teleconnection to Northern Hemisphere atmosphere in November[J]. Climate Dynamics,2018-01-01,50(2018-05-06)