Sea surface temperature in the north tropical Atlantic as a trigger for El Nino/Southern Oscillation events SCIE SCOPUS

Cited 189 time in WEB OF SCIENCE Cited 190 time in Scopus
Title
Sea surface temperature in the north tropical Atlantic as a trigger for El Nino/Southern Oscillation events
Author(s)
Ham, Yoo-Geun; Kug, Jong-Seong; Park, Jong-Yeon; Jin, Fei-Fei
Publication Year
2013-02
Abstract
El Nino events, the warm phase of the El Nino/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(1-5). 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 Nina event the following winter. In addition, El Nino events led by cold anomalies in the north tropical Atlantic tend to be warm-pool El Nino events, with a centre of action located in the central Pacific(6,7), rather than canonical El Nino 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 Nino event.
ISSN
1752-0894
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/3271
DOI
10.1038/NGEO1686
Bibliographic Citation
NATURE GEOSCIENCE, v.6, no.2, pp.112 - 116, 2013
Publisher
NATURE PUBLISHING GROUP
Subject
WARM POOL; NINO; PACIFIC; VARIABILITY; ENSO; SST; RAINFALL
Type
Article
Language
English
Document Type
Article
Publisher
NATURE PUBLISHING GROUP
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