DOI: 10.1038/ngeo1686
论文题名: Sea surface temperature in the north tropical Atlantic as a trigger for El Niño/Southern Oscillation events
作者: Ham Y.-G. ; Kug J.-S. ; Park J.-Y. ; Jin F.-F.
刊名: Nature Geoscience
ISSN: 17520894
出版年: 2013
卷: 6, 期: 2 起始页码: 112
结束页码: 116
语种: 英语
Scopus关键词: air-sea interaction
; anticyclone
; atmospheric forcing
; cyclone
; data interpretation
; El Nino-Southern Oscillation
; general circulation model
; La Nina
; ocean basin
; sea surface temperature
; teleconnection
; temperature anomaly
; warming
; wind direction
; Atlantic Ocean
; Atlantic Ocean (Tropical)
英文摘要: El Niño events, the warm phase of the El Niño/Southern Oscillation (ENSO), are known to affect other tropical ocean basins through teleconnections. Conversely, mounting evidence suggests that temperature variability in the Atlantic Ocean may also influence ENSO variability. Here we use reanalysis data and general circulation models to show that sea surface temperature anomalies in the north tropical Atlantic during the boreal spring can serve as a trigger for ENSO events. We identify a subtropical teleconnection in which spring warming in the north tropical Atlantic can induce a low-level cyclonic atmospheric flow over the eastern Pacific Ocean that in turn produces a low-level anticyclonic flow over the western Pacific during the following months. This flow generates easterly winds over the western equatorial Pacific that cool the equatorial Pacific and may trigger a La Niña event the following winter. In addition, El Niño events led by cold anomalies in the north tropical Atlantic tend to be warm-pool El Niño events, with a centre of action located in the central Pacific, rather than canonical El Niño events. We suggest that the identification of temperature anomalies in the north tropical Atlantic could help to forecast the development of different types of El Niño event. © 2013 Macmillan Publishers Limited. All rights reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/106875
Appears in Collections: 气候减缓与适应 科学计划与规划
There are no files associated with this item.
作者单位: Global Modeling and Assimilation Office, NASA/GSFC, Greenbelt, MD 20771, United States; Goddard Earth Sciences Technology and Research Studies and Investigations, Universities Space Research Association, Columbia, MD 21044, United States; Korea Institute of Ocean Science and Technology, Ansan 426-744, South Korea; Department of Meteorology, University of Hawaii, Honolulu, 96822, United States
Recommended Citation:
Ham Y.-G.,Kug J.-S.,Park J.-Y.,et al. Sea surface temperature in the north tropical Atlantic as a trigger for El Niño/Southern Oscillation events[J]. Nature Geoscience,2013-01-01,6(2)