Modulation of the relationship between spring AO and the subsequent winter ENSO by the preceding November AO

Abstract Previous studies indicated that the spring Arctic Oscillation (AO) exerts significant influences on the subsequent winter El Niño-Southern Oscillation (ENSO). This analysis suggests that the spring AO-ENSO linkage is highly modulated by its preceding November AO. When November and the subse...

Full description

Bibliographic Details
Published in:Scientific Reports
Main Authors: Shangfeng Chen, Wen Chen, Bin Yu
Format: Article in Journal/Newspaper
Language:English
Published: Nature Portfolio 2018
Subjects:
Medicine
R
Science
Q
Arctic
Pacific
Online Access:https://doi.org/10.1038/s41598-018-25303-0
https://doaj.org/article/2b1ad8fd3f9e4f539af26f9fff6fe835
Description
Summary:Abstract Previous studies indicated that the spring Arctic Oscillation (AO) exerts significant influences on the subsequent winter El Niño-Southern Oscillation (ENSO). This analysis suggests that the spring AO-ENSO linkage is highly modulated by its preceding November AO. When November and the subsequent spring AO indices are in phase, the spring AO has a pronounced influence on ENSO. However, when the November and spring AO indices are out of phase, the spring AO-ENSO connection disappears. Modulation of the November AO on the spring AO-ENSO connection is mainly through the constructive and destructive superposition of the November and spring AO associated sea surface temperature (SST) anomalies in the tropical central-eastern Pacific in spring and summer, as well as the SST anomalies developed further in the tropical Pacific via the positive air-sea feedback.

Similar Items